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Multiplex Plunger
Pumps
Installation, Care and
Operation Manual
Sales / Technical Information
USA Tollfree: 1-800-324-4706
Phone: 1 (918) 447-4600
Fax: 1 (918) 447-4677
Internet: http://www.nov.com
P.O. Box 4638 Houston, Texas 77210-4638
Covering the
following pumps:
30T-2
60T-3
80T-3
100T-4
130T-4
165T-5
200T-5
250T-5
300Q-5
REVISED: August 19, 2005
ISSUE: September 15, 2003
165T-5
80T-3
60T-3
300Q-5
200T-5
100T-4
130T-4
30T-2
250T-5
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SUPPLEMENT FOR
ALL PUMP MANUALS
! WARNING !
PRESSURE
RELIEF
VALVES
! NOTICE !
Our technical publications relative to
reciprocating pumps state that pressure
relief valves must be installed in the
discharge systems from these units.
This supplement is issued to emphasize
the importance of relieving the discharge
system of all pressure which exceeds the
rated working pressure applied by the
manufacturer to the specific pistons and
liners (or plungers and packing) in any
particular unit.
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! WARNING !
For the protection of persons and property the discharge system from each Reciprocating Pump must be
equipped with a device which relieves the system of all pressures which exceed the pressure rating applied
by the manufacturer to each particular piston or plunger diameter. Allowances will be made for pressure
surges which are inherent with the reciprocating action of piston and plunger pumps. The percentage of
pressure allowance appears later in this publication and in the “Standards of the Hydraulic Institute” (13
th
edition).
The relieving device must provide for instantaneous pressure relief, it may be a valve designed for automatic
or manual resetting; however, if preferred, rupture discs or burst discs may be installed.
FAILURE to comply with the procedures outlined in the Warning may result in damage to the pump and
related equipment and more importantly may cause serious bodily injury or death!
THE PRESSURE RELIEF VALVE:
1. This valve must be a full opening type.
2. It must have a working pressure rating, equal
to or greater than, the maximum working
pressure of the pump.
3. The through capacity of the valve, when fully
opened, must be sufficient to relieve the full
capacity of the pump without excessive
overpressure.
RUPTURE DISC OR BURST DISC:
1. These discs must have a diameter which is
not less than the pipe size of the pressure
relief flange.
2. These discs must have a rupture or burst
pressure rating consistent with the
specifications tabulated later in this
publication.
LOCATION OF THE RELIEF VALVE:
1. The relief valve must be placed in the
discharge line as close as possible to the
pump fluid end or it may be mounted on the
pump discharge manifold.
2. The relief valve must be on the pump side of
any discharge strainer.
3. The relief valve must be between the pump
fluid end and any valve in the discharge
system.
4. There must be no restricting device(s)
between the relief valve and the pump fluid
end.
THE RELIEF VALVE DISCHARGE LINE:
1. The relief valve discharge line should not
terminate in the pump suction line.
2. The line should terminate in the supply tank,
if possible.
3. The line must be securely anchored.
4. The line must be the same pipe size as, or
may be larger than, the discharge connection
on the relief valve.
5. If the line is of great length, this must be
taken into consideration in sizing the relief
valve.
6. There must be no restrictions or valves in the
relief valve discharge line.
NOTE: Follow the foregoing instructions if
rupture discs or burst discs are installed.
SUGGESTED SET PRESSURES FOR THE PUMP RELIEF VALVES:
PUMP TYPE: OPERATING PUMP PRESSURE:
Double Acting – Duplex Piston Pressure Rating – Plus 25%
Double Acting – Triplex Piston Pressure Rating – Plus 10%
Double Acting – Quintuplex Piston Pressure Rating – Plus 10%
Single Acting – Triplex Piston Pressure Rating – Plus 10%
Single Acting – Simplex Plunger Pressure Rating – Plus 25%
Single Acting – Duplex Plunger Pressure Rating – Plus 20%
Single Acting – Triplex Plunger Pressure Rating – Plus 10%
Single Acting – Quintuplex Plunger Pressure Rating – Plus 10%
Single Acting – Septuplex Plunger Pressure Rating – Plus 10%
Note: The above set pressures are to be observed when installing rupture discs or burst discs.
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Foreword…
This manual is published as a guide for the normal operation of your NATIONAL OILWELL VARCO equipment.
Because of the many factors which contribute to the function or malfunction of this machinery, and not having complete
knowledge of each factor or combination of factors, we cannot detail all facets of this subject. We must therefore
confine the scope of this presentation and when situations encountered are not fully encompassed by complete,
understandable instructions, these situations must be referred to the manufacturer.
When other than routine servicing is necessary, it can be most efficiently performed if the unit is removed to an area
of adequate space where an over-head crane, hydraulic lift, bearing pullers, impact tools, etc., are accessible.
The dimension and tolerances specified in this publication are those desirable for the most efficient operations of the
equipment. When components become worn or when new parts are introduced into a worn unit, it may not be possible
or economically feasible to reestablish such strict alignment and correct all dimensional deviations.
Improvements in design, engineering, materials, production methods, etc., may necessitate changes in these
products and result in inconsistencies between the content of this publication and the physical equipment. We reserve
the right to make these changes without incurring any liability or obligation beyond that which is stipulated in the
purchase contract.
The pictures, photographs, charts, diagrams, drawings, verbal contents and specifications are not to be construed
as giving rise to any warranty on the part of NATIONAL OILWELL VARCO. National Oilwell Varco makes no warranty,
either expressed or implied beyond that which is stipulated in the purchase contract.
NATIONAL OILWELL VARCO pumps are manufactured by National Oilwell Varco at the McAlester, Oklahoma
plant. The serial number, assigned each pump is stamped on the power end. Please refer to this serial number when
ordering parts for the pump.
The right and left sides of the pump are determined by viewing the pump from the back of the power end, looking
toward the fluid end. This position is also used to identify the plungers and their related parts as being number one, two
and three, beginning at the left side of the pump.
! CAUTION ! CAUTION ! CAUTION !
EXERCISE SAFETY IN ALL PERFORMANCES: DO NOT IGNORE ANY WARNINGS; USE ONLY APPROVED
METHODS, MATERIALS AND TOOLS. DO NOT PERMIT ANY FUNCTION OF QUESTIONABLE SAFETY;
ACCIDENTS ARE CAUSED BY UNSAFE ACTS AND UNSAFE CONDITIONS. SAFETY IS YOUR BUSINESS AND
YOU ARE INVOLVED.
! WARNING ! WARNING ! WARNING !
BEFORE PERFORMING ANY SERVICE FUNCTION, BE CERTAIN THAT THE UNIT IS SEPARATED FROM ITS
POWER SOURCE OR THAT THE POWER SOURCE IS LOCKED-OUT TO PREVENT ANY FORM OF ENERGY
FROM ENTERING THE EQUIPMENT. THIS WOULD INCLUDE ELECTRICAL OR MECHANICAL ENERGY INTO OR
FROM THE PRIME MOVER(S), PNEUMATIC ENERGY FROM THE COMPRESSOR/AIR SYSTEM, ETC.
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! WARNING ! WARNING ! WARNING !
FAILURE TO OBSERVE THE WARNINGS AND NOTES OF CAUTION IN THIS PUBLICATION CAN RESULT IN
PROPERTY DAMAGE, SERIOUS BODILY INJURY, OR DEATH.
! ATTENTION - NOTICE - IMPORTANT !
THESE TERMS ARE USED TO DRAW ATTENTION TO ACTION THAT WILL CAUSE DAMAGE TO THE PUMP,
COMPONENTS OR ATTACHMENTS.
! ATTENTION !
PUMP NOMENCLATURE:
ALL PUMP SIZES WITHIN THIS MANUAL WILL BE DESCRIBED WITH THE NEW OR CURRENT
NOMENCLATURE. THE OLD 'J' MODEL PUMP NOMENCLATURES DESCRIBED ON THE FRONT COVER, BUT
NOT INCLUDED IN THIS MANUAL EXCEPT AS NEEDED, ARE TO BE UNDERSTOOD AS BEING INCLUDED WITH
THE NEW NOMENCLATURES.
! WARNING ! WARNING ! WARNING !
BEFORE SERVICING PUMPS:
1. SHUT DOWN OR DISENGAGE THE PUMP POWER SOURCE.
2. SHUT DOWN ALL PUMP ACCESSORY EQUIPMENT.
3. RELIEVE OR "BLEED OFF" ALL PRESSURE FROM THE PUMP FLUID CYLINDER(S).
FAILURE TO SHUT DOWN POWER AND RELIEVE PRESSURE FROM THE PUMP BEFORE SERVICING
CAN RESULT IN SERIOUS PERSONAL INJURY AND PROPERTY DAMAGE.
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Plunger Pump Nomenclature Example….
60 T- 3 L 14 S F
RATED INPUT *F = FLANGED, T = THREADED
HORSEPOWER
*S = SPHERICAL SEAT VALVES
T = TRIPLEX *A = CAGE VALVES
Q = QUINTUPLEX *B = NEW CAGE VALVES
*C = TAPERED SEAT VALVES
**CYLINDER MATERIAL
NUMBER
*L = LOW PRESSURE
*M = MEDIUM. H = HIGH
*STROKE LENGTH (IN.)
*NOMENCLATURE MAY BE SHORTENED IN PARTS LISTS OR OTHER
INSTANCES TO LEAVE OFF THE MATERIAL, VALVE TYPE, ETC. THIS
FULL NOMENCLATURE DESCRIPTION IS GIVEN FOR INFORMATIONAL
PURPOSES.
**CYLINDER MATERIAL NUMBER EXAPLES INCLUDE:
14 = 9D NICKEL ALUMINUM BRONZE
12 = FORGED STEEL
06 = 316 S.S.
(Inquire about other material numbers)
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Table of Contents…
INSTALLATION
PAGE
I. GENERAL
A. Suction Line .................................................................................................................................................... 9
B. Discharge Line ........................................................................................................................................... 9-10
C. Power End .................................................................................................................................................... 10
D. Fluid End....................................................................................................................................................... 10
E. Plunger Packing............................................................................................................................................ 11
F. Plunger Packing Lubrication ......................................................................................................................... 11
G. Suction Pulsation Dampener
1. Low Pressure - Plastic Body..................................................................................................................... 11
2. High Pressure - Aluminum Body .............................................................................................................. 12
LUBRICATION
I. GENERAL
A. Oil.................................................................................................................................................................. 13
OPERATION
I. GENERAL
A. Operation Check List .................................................................................................................................... 14
MAINTENANCE
I. GENERAL
A. Daily Maintenance ........................................................................................................................................ 15
B. Monthly Maintenance.................................................................................................................................... 15
C. Storage ......................................................................................................................................................... 16
D. Start-Up After Storage .................................................................................................................................. 16
II. TROUBLE SHOOTING GUIDE...................................................................................................................... 17-19
OVERHAUL AND REPAIR
I. GENERAL
A. Tools Required.............................................................................................................................................. 20
B. Check Points and Adjustments
1. 30T, 60T, & 80T........................................................................................................................................ 20
2. 100T, 130T, 165T, 200T, 250T & 300Q .............................................................................................. 20-21
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Table of Contents (Continued)...
DISASSEMBLY
PAGE
I. POWER END
A. Intermediate Rods and Oil Wiper Retainers ..................................................................................................22
B. Crankshaft Assembly.....................................................................................................................................22
J-30 & J-60 (Old Style) .......................................................................................................................... 22-23
30T, 60T, & 80T...........................................................................................................................................23
J-100 & J-150 ..............................................................................................................................................23
100T, 130T, 165T, 200T, 250T & 300Q ......................................................................................................24
C. Crankshaft Bearings (All Pumps) ..................................................................................................................24
II. FLUID END
A. Fluid Cylinder Removal
30T, 60T, & 80T...........................................................................................................................................25
100T, 130T, J-150, 165T, 200T, 250T & 300Q ...........................................................................................25
B. Stuffing Boxes and Plunger Removal
30T, 60T, & 80T...........................................................................................................................................25
100T, 130T, J-150, 165T, 200T, 250T & 300Q ...........................................................................................26
C. Fluid End Valve Removal ..............................................................................................................................26
ASSEMBLY
I. POWER END
A. Crankshaft Main Bearings
30T, 60T, & 80T...........................................................................................................................................27
100T, 130T, J-150, 165T, 200T, 250T & 300Q ...........................................................................................28
B. Crankshaft and Center Support Bearings
200T, 250T & 300Q .....................................................................................................................................29
100T, 130T, 165T, 200T, 250T & 300Q ......................................................................................................29
C. Connecting Rod and Crosshead Assembly...................................................................................................30
D. Connecting Rod to Crankshaft Assembly
J-30 and J-60 (with Old Style straight cut connecting rods)........................................................................30
J-100, & J-150 (with Old Style straight cut connecting rods).......................................................................30
30T, 60T, 80T, 130T, 165T, 200T, 250T & 300Q (with New Style connecting rods) ............................ 31-32
E. Intermediate Rods and Oil Seal Retainers
30T, 60T, 80T, 100T and 130T....................................................................................................................32
100T, 130T, 165T, 200T, 250T & 300Q ......................................................................................................32
All Pumps.....................................................................................................................................................33
II. FLUID END
A. Stuffing Boxes and Plungers .........................................................................................................................33
30T, 60T, 80T ........................................................................................................................................ 33-34
100T, 130T, 165T, 200T, 250T & 300Q ......................................................................................................34
B. Fluid Cylinders (All Pumps) ...........................................................................................................................35
C. Fluid Valves – Spherical, Tapered Seat Bottom Guided and Cage Type .....................................................35
D. Piping Installation...........................................................................................................................................35
E. Plunger Packing Installation
1. 850-N Packing...........................................................................................................................................36
2. 1045 Packing.............................................................................................................................................37
3. 699 Packing...............................................................................................................................................38
4. Spring Loaded Kevlar Multiplex Packing............................................................................................. 38-39
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Table of Contents (Continued)…
PLUNGER PUMP VALVES
PAGE
I. OPERATIONAL MAINTENANCE
A. Suction and discharge ............................................................................................................................................. 40
B. Valve Covers ............................................................................................................................................................ 40
C. Valve Cage and Cover Seals .................................................................................................................................. 40
D. Valve Springs ........................................................................................................................................................... 40
E. Valve Cages ............................................................................................................................................................. 41
F. Valve and Seat ......................................................................................................................................................... 41
II. CAGE TYPE VALVES
A. Nomenclature ........................................................................................................................................................... 42
B. Valve Servicing Tools (charts)................................................................................................................................. 43
C. Disassembly Procedure......................................................................................................................................44-45
D. Valve Parts Inspection ........................................................................................................................................46-49
E. Assembly Procedure...........................................................................................................................................50-52
III. TAPERED SEAT VALVES
A. Spherical Valves and Seats
1. Valve Removal Procedure .................................................................................................................................. 53
2. Installation Procedure ....................................................................................................................................53-55
B. Tapered Seat-Bottom Guided Valves
1. Valve Removal Procedure .................................................................................................................................. 56
2. Installation Procedure ....................................................................................................................................56-58
GEAR REDUCER
I. LUBRICATION AND MAINTENANCE
A. General ......................................................................................................................................................... 59
1. Oil ........................................................................................................................................................ 59-60
2. Maintenance ............................................................................................................................................. 60
II. OVERHAUL AND REPAIR
A. General ......................................................................................................................................................... 61
1. Disassembly ............................................................................................................................................. 61
2. Assembly ............................................................................................................................................. 62-64
3. Installation ................................................................................................................................................ 64
P-55U LUBRICATOR
I. PUMP OPERATING INSTRUCTIONS
A. Operating Instructions................................................................................................................................... 65
1. Box Suction Pumps .................................................................................................................................. 65
2. Flow Rate Adjustment .............................................................................................................................. 65
3. Sight Glass ............................................................................................................................................... 65
4. Overfilling of Sight Glass .......................................................................................................................... 65
5. Reservoir Oil Level ................................................................................................................................... 65
6. Pump Displacement ................................................................................................................................. 65
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Table of Contents…
STORAGE OF PUMPS PAGE
I. GENERAL
A. General ..........................................................................................................................................................66
B. Recommended Protection and Initial Storage ...............................................................................................66
C. Six Month Servicing.......................................................................................................................................67
D. Pre-Installation Check After Storage .............................................................................................................67
OWNERS RECORD .............................................................................................................................68
TYPICAL WATERFLOOD PUMP INSTALLATION SUCTION and
DISCHARGE PIPING ARRANGEMENT
...........................................................................69
VISCOSITY EQUIVALENTS ........................................................................................................70
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Installation…
I. GENERAL
Careful planning of the plant layout will save considerable time and expense, both initially when the installation is
made and later during the operation of the plant. In selecting the location for the pump, consideration should be given to
the fact that a positive suction head at the pump inlet contributes toward the pump efficiency. However, the layouts of
the piping, the arrangement of the fittings, and restrictions in the suction and discharge lines have even more effect. For
this reason, all fittings and valves should be full opening; all bends should be of long radius or should be eliminated
where possible. Long radius 45° ells should be used, particularly if installed near the fluid cylinder. The following points
outline the basic requirements for an installation that will contribute greatly toward good pump operation.
A. SUCTION LINE
1. The suction line must not be smaller than the suction intake of the fluid cylinder and may be larger. The length
of the suction line should be held to a minimum and should run straight from the supply tank to the pump.
2. When bends are required, they should be made with long radius 45° ells. Do not use a bend directly adjacent to
the fluid cylinder. Avoid using any 90° bends if at all possible.
3. Provide a full opening gate valve in the suction line adjacent to the supply tank to permit the line to be drained
when necessary. Do not use any type of restricting valve.
4. Do not use meters or other restrictions in the suction line. Eliminate any rise or summit in the suction line where
air or vapor can collect.
5. Pulsation dampening devices are strongly recommended.
6. When necessary to manifold a number of pumps to a common suction, the diameter of the manifold and suction
pipe leading from the supply tank must be such that it has a cross-sectional area equal to, or greater, than the
area of the combined individual suction pipes.
7. When a charging or booster pump is used in the suction line, it must have a capacity equal to twice that of the
pump output. This is necessary to provide a charging pump with an output great enough to meet the peak
volume requirements of the plunger pump during the suction stroke and not act as a restriction in the line.
8. All piping, both suction and discharge must be solidly and independently supported. The first support must be
as close to the pump as practical. This is necessary to prevent placing the pump in a strain and to keep any
vibration in the system from acting directly on the pump.
B. DISCHARGE LINE
1. Use a pulsation dampener or a desurger in the discharge line. It should be placed in the line as near the fluid
cylinder as possible and ahead of any bend in the line.
2. Do not reduce the size of the discharge line below that of the pump outlet until the line has passed through the
desurger, and is away from the pump approximately 20 feet (6m).
3. Any bend in the discharge line should be made with a long radius 45° ell. Do not use a bend directly adjacent to
the fluid cylinder, particularly a 90° bend.
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Installation…
I. GENERAL
B. DISCHARGE LINE (Continued)...
4. A pressure relief valve should be installed in the discharge line. The relief valve should be set to operate at a
pressure no greater than 25% above the maximum rated pressure for the plunger size being used. It should be
installed in the line ahead of any valve and be piped so that any flow is returned to the supply tank rather than
the suction line. This will prevent possible damage to the suction line and suction dampener.
5. A by-pass line should be installed to permit the pump to be started without load. This allows oil to circulate and
reach all parts in the power end before they are loaded.
C. POWER END
1. The pump must be mounted level and should be grouted in and be free of strain. This applies to a skid-
mounted pump or a pump mounted directly on a concrete base.
2. The sheave of a belt driven pump must be correctly aligned with the prime mover sheave. Care must be used
to prevent over-tightening as this will shorten belt life, place the pump in a strain, and cause undue additional
loads on the crankshaft and bearings. Sheave sizes should not be smaller than the minimum approved
diameter.
3. When connecting a direct-driven pump, the shafts must be correctly aligned. Couplings should not be expected
to compensate for avoidable misalignment. With Thomas Flexible Couplings, angular misalignment should not
exceed one-half degree. Offset misalignment of the centerlines of the two shafts should not exceed .015" (.381
mm). Actually, misalignment should be as small as practical.
4. Provision should be made to stop the pump automatically in the event of supply fluid failure. A pump should not
be run dry, as this causes wear on the packing.
5. Adequate plunger chamber drains have been provided in the pump and should not be plugged. Drain lines
should never be reduced in size from the connection provided.
6. The pump has been drained of oil after testing at the factory and MUST be filled with the proper oil (see
page 13) before starting. The rust inhibiting oil coating inside the power end need not be removed before filling;
however, it is recommended that the power end be checked to make sure dirt or contamination has not entered
during shipment.
D. FLUID END
1. The fluid cylinder is shipped assembled to the pump complete with valves and cover plates. The stuffing boxes,
plungers, and related items have also been assembled and tested with the pump (unless otherwise specified)
and require no further assembly. Before the pump is started, these parts should be checked for tightness as
well as for possible damage during shipment.
2. Thoroughly clean the suction line piping before starting the pump. Weld spatter, slag, mill scale, etc., will
damage a pump in a short time.
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Installation…
I. GENERAL
(Continued)…
E. PLUNGER PACKING
The recommended style of packing has been installed and run at the plant. It does, however, require further "setting
up" as the pump is started and brought up to pressure. Refer to pages 36 through 39 for correct procedure for
packing used.
F. PLUNGER PACKING LUBRICATION
1. Automatic packing lubricators are beneficial on all installations and are required on pumps operating at high
pressure (1200 psi [85kg/cm 2] and up) to obtain good packing life.
2. When an automatic lubricator is used in water and power oil service, use Rock Drill (Air Drill) oil of proper
viscosity. For butane-propane service, use NATURAL castor oil. Set lubricator to feed 5 to 7 drops per minute.
G. SUCTION PULSATION DAMPENERS
1. Low Pressure - Plastic Body
a. Some National Oilwell Varco plunger pumps are equipped with suction pulsation dampeners. These
dampeners do an excellent job when properly charged and should be kept filled during operation.
! ATTENTION !
At suction pressures over 10 psi (.7kg/cm2), the dampener should be deflated prior to bleeding off the suction
pressure to prevent damage to the diaphragm.
b. The plastic dampener body has an instruction decal attached, which lists the following installation and
charging procedures.
! ATTENTION !
HANDLE WITH CARE.
This is a plastic part and can be broken.
c. Tighten cap screws with 10 to 12ft-lbs. of torque.
! ATTENTION !
Use thread sealing compound on check valve and tighten until snug.
OVERTIGHTENING WILL DAMAGE BODY.
d. With pump operating - Charge dampener until bottom of diaphragm is visible through sight glass. Proper
charge is when bottom of diaphragm is between center and top of sight glass.
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Installation…
I. GENERAL (Continued)…
G. SUCTION PULSATION DAMPENERS
(Continued)…
2. High Pressure - Aluminum Body
a. In pressures in excess of 20 psi (1.406 kg/cm2 ) and up to 70 psi (10.545 kg/cm2), it is necessary to use the
National Oilwell Varco high pressure suction dampener.
b. The high-pressure dampener is charged in a similar manner to the low-pressure plastic dampener, using air
or nitrogen to charge the diaphragm and maintain its position in relation to the sight glass.
c. The following procedures should be used to service this dampener:
(1) The dampener is fitted to an adapter that may be either welded into an existing line or be a part of a
separate dampener housing. Place a gasket on each side of the diaphragm retaining plate and place
on the adapter.
(2) The dampener spacer is then placed on top of the retainer plate with the grooved side up and the flat
side against the retainer gasket.
(3) The diaphragm fits into the groove on the spacer with the curved portion of the diaphragm above the
spacer.
(4) Apply a continuous 1/8" diameter bead of silicone rubber on the outer edge of the diaphragm after it has
been positioned into the spacer. This silicone rubber (GE Silicone Rubber or Dow-Corning Silastic) is
readily available at most hardware stores. Assemble the body cover within ten minutes after applying
the silicone rubber.
(5) Fit the dampener cover over the diaphragm and assemble the capscrews. Tighten these capscrews
evenly to approximate 80 ft-lbs. of torque.
(6) Install the sight glasses, one in each side of the cover. Be sure to seat the sight glass packing carefully
into the groove on the cover, as this must be an airtight connection.
(7) The air check valve has a pipe thread and must be made up into the cover airtight. Use a good pipe
thread sealant to promote sealing.
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Lubrication…
I. GENERAL
NATIONAL OILWELL VARCO Plunger Pumps are "splash" lubricated. The main bearings receive oil through ports
in the frame. Crankshaft bearings are fed by splash and at low speed through roll pins from the crosshead reservoir.
Crossheads and crosshead pin bushings are fed through holes in the crossheads and crosshead reservoir.
Intermediate rods are lubricated from the splash they receive from the crosshead. At speeds under 200 rpm, special
auxiliary oil systems are required except on the 300Q Initial filling should be into the crosshead reservoir on top of the
crossheads.
A. OIL
Use "extreme pressure" gear oil. The chart below shows the recommended grades for various temperatures
surrounding the pump.
U.S. UNITS OF MEASURE
Temperature AGMA Industrial EP Gear Oil
+50°F to +155°F AGMA No. 6 EP or ASTM/ISO Grade No. 320 (viscosity 1335 to 1632 SSU 100°F)
+20°F to +100°F AGMA No. 5 EP or ASTM/ISO Grade No. 220 (viscosity 918 to 1122 SSU 100°F)
-20°F to + 60°F AGMA No. 2 EP or ASTM/ISO Grade No. 68 (viscosity 284 to 347 SSU 100°F)
Crankcase Capacity - U.S. Gallons: 30T - 1-1/2 100T - 5-1/2 200T - 8
60T - 2 130T - 5-1/2 250T - 8
80T - 2 165T - 8 300Q - 12
METRIC UNITS OF MEASURE
Temperature AGMA Industrial Gear Oil
+10°C to +68°C AGMA No. 6 EP or ASTM/ISO Grade No. 320 (Viscosity 228-352 cSt at 37.8°C)
-7°C to +38°C AGMA No. 5 EP or ASTM/ISO Grade No. 220 (Viscosity 198-242 cSt at 37.8°C)
-29°C to +16°C AGMA No. 2 EP or ASTM/ISO Grade No. 68 (Viscosity 61-75 cSt at 37.8°C)
Crankcase Capacity - Liters: 30T - 5.7 100T - 20.8 200T - 30.3
60T - 7.6 130T - 20.8 250T - 30.3
80T - 7.6 165T - 30.3 300Q - 45.4
Oil must pour freely at minimum operating temperature. Change oil every six months or as frequently as
operating conditions require to maintain a clean, sludge-free oil of proper viscosity.
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Operation…
I. GENERAL
! ATTENTION !
THE FOLLOWING POINTS SHOULD BE CHECKED FOR THE PREVENTION OF TROUBLE OR TO
CORRECT TROUBLE THAT MAY ARISE.
A. OPERATION CHECKLIST
1. Pump must be a set level for proper lubrication. If an auxiliary lubrication pump is used for slow speed
operation, make sure it is connected and is operating properly.
2. Make sure pump is filled with clean oil of the proper viscosity (see above).
3. Do not
over-speed the pump.
4. Do not
use a smaller diameter sheave than is recommended for the pump.
5. Make sure all safety shutdown switches are operating properly.
6. Keep all suction and discharge line valves fully open.
7. If a bypass is used to regulate output, make sure it is set properly.
8. Make sure the pressure relief valve is set properly.
9. Do not
exceed the pressure rating of the pump for the particular plunger size.
10. Make sure the suction line is tight as air entering the suction line will cause severe hammering and knocking of
the pump.
11. Make sure plunger and intermediate rod connections are tight and locked.
12. Check the plunger packing for correct adjustment (see pages 36 to 39).
13. Check the suction and discharge dampeners for proper charge as this is very important for long dampener life
and good pump operation.
14. Make sure the hex nuts holding the cylinder in place are tight.
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Maintenance…
I. GENERAL
The following points are intended as a guide to be used in setting up a maintenance program. Good preventive
maintenance will pay big dividends in the form of reliable service with a minimum of trouble.
A. DAILY MAINTENANCE
1. Check power end oil level daily by means of the dipstick in the rear cover. Do not attempt to check the oil with
the pump running. Inspect the oil for dirt or contamination and change if necessary. An increase in oil level
indicates fluid end leakage into power end. Change oil immediately and check intermediate rod wipers and
surface smoothness of rod. Check for plunger packing leakage.
2. Lubricate plunger packing frequently. Packing life can be greatly increased by greasing every four (4) hours
with a small amount of grease. Grease is not recommended at pressures above 1200 psi. Use an alternate
packing lubricator to drip the proper oil of the plunger for lubrication. (See page 13 for further details).
3. Check lubricator for proper level and operation.
4. Check plunger packing for excessive leakage. Replace packing as required.
5. Check stuffing box adjusting nuts for tightness.
6. Drain plunger leakage sump tanks if required.
7. Flush plunger chamber drain lines with kerosene on power oil pumps and fresh water on salt pumps. This may
be done weekly unless salt and paraffin accumulation is severe.
8. Make sure suction and discharge line valves are fully open.
9. Check for leakage between the fluid cylinder and frame or stuffing box to fluid cylinder packing if required.
10. Check all seals for leakage.
11. Check belts or clutch for slippage. If either condition exists, correct immediately.
B. MONTHLY MAINTENANCE
1. Drain and refill crankcase every six (6) months or as often as required to maintain a clean, sludge-free oil of the
proper viscosity.
2. Clean crankcase air breather with a non-explosive solvent.
3. Check all studs, nuts and capscrews for tightness. Inspect gaskets for leaks; tighten or replace as required.
4. Clean pump. Good housekeeping is a prerequisite to good maintenance.
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Maintenance…
I. GENERAL
(Continued)…
C. STORAGE
If the pump is to be idle for longer than one (1) week, it should be prepared for storage as follows:
1. Drain and clean crankcase thoroughly. Leave drain open and install 90° elbow, pointing downward, to permit air
circulation and prevent condensation build-up.
2. Coat all bearings, finished surfaces, and entire inside surface of crankcase with a rust inhibiting oil.
3. Remove plungers and packing, clean and coat with rust inhibiting oil.
4. Remove fluid cylinder valves allowing cylinder to be thoroughly cleaned and drained.
5. Coat entire cylinder, valves and parts, with a rust inhibiting oil.
6. Thoroughly inspect pump and rotate crankcase once each month. Re-coat with rust inhibiting oil where
necessary.
D. START-UP AFTER STORAGE
Any pump that has been in storage, either after field use or as shipped from the plant, will need a thorough
inspection to make sure it has not been damaged in any way and that all parts are properly in place.
! ATTENTION !
FAILURE TO OBSERVE THE FOLLOWING POINTS CAN RESULT IN SERIOUS DAMAGE.
1. Remove all covers on both power end and fluid end; thoroughly clean and inspect all parts and finished
surfaces.
2. Check all bearings to make sure they are clean and in good condition.
3. Make sure valves, plungers and packing are properly installed and in good condition.
4. Carefully tighten all bolts, nuts, studs and working connections.
5. Fill power end to the proper level with clean oil of the proper viscosity. Make sure oil is poured into the
crosshead reservoir and is worked into all bearings.
6. Fill packing lubricator and pump lines full. Check by breaking connection at stuffing box, working lubricator
plunger until oil appears.
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Maintenance (Continued)…
II. TROUBLE SHOOTING GUIDE
PROBLEM POSSIBLE CAUSE CORRECTION
SUCTION LINE RESTRICTED BY:
(1,
2, 3, 4)
1. TRASH, SCALE BUILD UP, ETC. LOCATE AND REMOVE
2. PARTIALLY CLOSED VALVE IN SUCTION
LINE
LOCATE AND CORRECT
3. METERS, FILTERS, CHECK VALVES,
NON-FULL-OPENING, CUT-OFF VALVE OR
OTHER RESTRICTIONS.
RE-WORK SUCTION LINE TO ELIMINATE
4. SHARP 90º BENDS OR 90º BLIND TEES. RE-WORK SUCTION LINE TO ELIMINATE.
AIR ENTERING SUCTION LINE THROUGH
CUT-OFF VALVE
TIGHTEN OR REPACK VALVE STEM PACKING
AIR ENTERING SUCTION LINE THROUGH
LOOSE CONNECTION OR FAULTY PIPE
LOCATE AND CORRECT
AIR OR VAPOR TRAPPED IN SUCTION LINE
LOCATE RISE OR TRAP AND CORRECT BY
STRAIGHTENING LINE, PROVIDING ENOUGH
SLOPE TO PERMIT ESCAPE AND PREVENT BUILD-
UP
LOW FLUID LEVEL
INCREASE SUPPLY AND INSTALL AUTOMATIC LOW
LEVEL SHUT
-DOWN SWITCH
SUCTION DAMPENER NOT OPERATING INSPECT AND REPAIR AS REQUIRED
WORN VALVES INSPECT AND REPAIR AS REQUIRED
ENTRAINED GAS IN FLUID PROVIDE GAS BOOT OR SCRUBBER FOR FLUID
POOR INLET AND OUTLET ARRANGEMENT
AT SUPPLY TANK
INLET TO BE AT TOP OF TANK AND BAFFLED TO
BREAK
-OUT GAS AND PREVENT CHANNELING.
OUTLET TO BE
12" FROM BOTTOM OF TANK AND
AS FAR FROM INLET AS POSSIBLE
, NEVER
CLOSER THAN
90º.
LOOSE PACKING ADJUSTING NUT TIGHTEN AND/OR REPLACE PACKING
INADEQUATE SIZED SUCTION LINE
REPLACE WITH INDIVIDUAL SUCTION LINE OF
NEXT SIZE LARGER THAN INLET PUMP
LEAKAGE PRESSURE RELIEF VALVE THAT
HAS BEEN PIPED BACK INTO SUCTION LINE
REPAIR VALVE AND RE-WORK PIPING TO RETURN
TO SUPPLY TANK - NOT SUCTION LINE.
BY-PASS PIPED BACK TO SUCTION
REWORK TO RETURN BY-PASSED FLUID BACK TO
SUPPLY TANK
- NOT SUPPLY LINE
KNOCKING OR
POUNDING IN FLUID
END AND PIPING
BROKEN PLUNGER
INSPECT WHEN ROTATING PUMP BY HAND AND
REPLACE AS REQUIRED
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Installation, Care and Operation
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Maintenance…
II. TROUBLE SHOOTING GUIDE (Continued)...
PROBLEM POSSIBLE CAUSE CORRECTION
VALVE WEAR OR DAMAGE CHECK FLUID END FOR BAD VALVES
WORN MAIN BEARINGS REPLACE AS REQUIRED
LOOSE PLUNGER - INTERMEDIATE ROD
CROSSHEAD CONNECTION
INSPECT FOR DAMAGE - REPLACE AS
REQUIRED AND TIGHTEN
KNOCK IN POWER END
WORN CROSSHEAD PIN, OR
CONNECTING ROD
LOCATE AND REPLACE AS REQUIRED
CORROSION TREAT FLUID AS REQUIRED
ABRASIVES IN FLUID FILTER AS REQUIRED
IMPROPER INSTALLATION
INSPECT AND INSTALL PER INSTRUCTION
SHEET IN PACKING BOX
IMPROPER LUBRICATION (EITHER
INSUFFICIENT OR EXCESSIVE OR
INCORRECT TYPE)
CHECK INSTRUCTIONS IN MANUAL AND
CORRECT AS REQUIRED.
LUBRICATOR NOT OPERATING INSPECT AND CORRECT AS REQUIRED
ADJUSTING NUT LOOSE INSPECT AND REPACK PER INSTRUCTIONS
RAPID VALVE WEAR OR
FAILURE
SCALE OR BUILD UP ON PLUNGER TREAT FLUID AS REQUIRED
WORN OR PITTED PLUNGERS AND/OR
STUFFING BOX
REPLACE AS REQUIRED
ABRASIVES IN FLUID FILTER AS REQUIRED
PUMP OPERATED WITHOUT FLUID
CHECK SYSTEM FOR FAULTY LOW-LEVEL
SHUT-DOWN CONTROLS OR CLOSED VALVES
AND CORRECT AS REQUIRED.
ABNORMALLY HIGH FLUID
TEMPERATURES
CHECK WITH MANUFACTURER FOR
RECOMMENDATIONS ON TYPE OF PACKING
WRONG TYPE OF PACKING FOR
PARTICULAR FLUID BEING HANDLED
CHECK WITH MANUFACTURER FOR
RECOMMENDATIONS ON TYPE OF PACKING
SHORT PACKING LIFE
CAVITATION (KNOCKING AND
POUNDING IN FLUID CYLINDER AND
PIPING)
REFER TO CORRECTION OF "KNOCK IN
POWER END" ABOVE
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Maintenance…
II. TROUBLE SHOOTING GUIDE
(Continued)...
PROBLEM POSSIBLE CAUSE CORRECTION
PLUNGER CRACKED AT INSTALLATION.
INSTALL NEW PLUNGER USING CARE TO AVOID
ANY SHARP BLOW OR FORCE ON PLUNGER
.
PLUNGER CRACKED FROM THERMAL
SHOCK.
CHECK SYSTEM TO ELIMINATE ANY SHARP OR
SUDDEN TEMPERATURE DIFFERENCES.
TEMPERATURE EXTREMES ON THE PLUNGER CAN
OCCUR FROM PACKING AS DISCUSSED UNDER
“SHORT PACKING LIFE” PROBLEM PR FROM
TEMPERATURE CHANGES IN THE FLUID ITSELF.
BROKEN OR PITTED
FROM IMPLOSIONS
CAUSED BY IN
EXCESSIVE GAS OR
AIR ENTRAINED
FLUID.
PLUNGER PITTED FROM IMPLOSIONS
CAUSED BNY EXCESSIVE GAS OR AIR
ENTRAINED IN FLUID.
CHANGE SUCTION SYSTEM TO ELIMINATE OR
CHECK WITH MANUF
. REGARDING USE OF
SPECIAL PACKING ARRANGEMENT
.
PACKING FAILURE.
CHECK AND CORRECT PER RECOMMENDATIONS
UNDER “SHORT PACKING LIFE” PROBLEM.
RAPID WEAR OF
HARD-COATED
PLUNGER
P
LUNGER NOT SUITABLE FOR
PARTICULAR SERVICE
.
CHECK WITH MANUF. FOR RECOMMENDATION.
PLUNGER NOT SUITABLE FOR PARTICULAR
SERVICE.
CHECK AND CORRECT AS REQUIRED.
PUMP NOT LEVEL. CHECK AND CORRECT AS REQUIRED.
WORN, CORRODED, PITTED, OR
OTHERWISE DAMAGED SEALING SURFACE.
CHECK AND CORRECT AS REQUIRED.
WORN OR DAMAGED SEALS. CHECK AND CORRECT AS REQUIRED.
OIL SEAL LEAKS
OIL LEVEL TOO HIGH. CHECK AND CORRECT AS REQUIRED.
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Overhaul and Repair…
I. GENERAL
The bearings and other working parts in the power end have been designed for continuous duty, and if properly
lubricated, will provide years of trouble-free service. However, after the pump has been in service for a long period of
time, the bearings and other working parts will gradually loosen, and if not corrected, will lead to more serious trouble.
The time to overhaul the pump will vary, depending on the operating conditions, and is therefore a matter that must be
left to the good judgment of the operator. Complete disassembly and assembly procedures are discussed in their
respective sections.
A. TOOLS REQUIRED
Most of the tools required to overhaul the pump will be found in an ordinary set of mechanics hand tools. The
special tools and equipment required and not furnished with the pump include a torque wrench, bearing puller, and a
valve servicing kit. Also, a hot oil bath capable of reaching a temperature of 300° F (149° C) will be needed.
B. CHECK POINTS AND ADJUSTMENTS
1. 30T, 60T & 80T:
The crankshaft main bearings are single row, shim adjusted, tapered roller bearings. They have been
assembled and adjusted at the factory with proper clearance and will give long trouble-free service. The proper
clearance is found by adjusting the amount of shims until the crankshaft has .003" to .005" endplay and will
rotate freely.
2. 100T, 130T, 165T, 200T, 250T & 300Q:
a. The crankshaft main bearings are non-adjustable, double row tapered roller bearings, factory set for the
proper running clearance.
b. The connecting rods, or bearing inserts, are solid aluminum alloy precision ground with the following
tolerances -- page 21.
c. The minimum allowable clearance between the crosshead and crosshead bore is .012" (.305 mm). The
maximum allowable clearance, including wear, is .030" (.762 mm). This is for all pumps.
d. Maximum allowable clearances between the crosshead pin and connecting rod bushings are listed on
page 21. The bushings are pressed into the connecting rod and must be reamed to size. The pin and
bushings must then be "blued" to check the fit. High spots in the bushings must be scraped.
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Overhaul and Repair…
I. GENERAL
B. CHECK POINTS AND ADJUSTMENTS
(Continued)…
CRANKSHAFT O.D MAXIMUM CLEARANCE MINIMUM CLEARANCE PUMP
in mm in mm in mm
30T 2.500
2.499
63.500
63.475
.012 .305 .003 .076
60T
80T
3.250
3.249
82.550
82.525
.013 .330 .003 .076
100T
130T
4.125
4.124
104.775
104.750
.018 .457 .007 .178
165T
250T
200T
300Q
5.000
4.999
127.000
126.975
.020
.508
.0064
.163
CROSSHEAD PIN O.D. MAXIMUM CLEARANCE MINIMUM CLEARANCE PUMP
in mm in mm in mm
30T 1.3765
1.3760
34.963
34.950
.007 .178 .001 .025
60T
80T
1.8765
1.8760
47.663
47.650
.007 .178 .0015 .038
100T
130T
2.5635
2.5300
65.113
65.100
.007 .178 .0015 .038
165T
200T
250T
300Q
3.0015
3.0010
76.238
76.225
.008
.203
.002
.051
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Disassembly…
I. POWER END
It is not necessary to remove the fluid end when disassembling the power end. The plungers may be disconnected
from the intermediate rods and left in the stuffing boxes.
A. INTERMEDIATE RODS AND OIL WIPER RETAINERS (ALL PUMPS)
1. Loosen the plunger lock screws (if used), disconnect the plunger from the intermediate rod, and
remove the baffle plate.
! ATTENTION !
A BACK-UP WRENCH MUST BE USED FOR REMOVAL OF PLUNGER AND INTERMEDIATE ROD TO PREVENT
DAMAGE TO THE CONNECTING ROD.
2. The oil wiper retainer is piloted into the frame and held in place by two capscrews or a metal clip.
3. Remove the intermediate rod to crosshead lock screw (if used), and using a back-up wrench
on the
crosshead, unscrew the rod. Remove the rod and oil wiper retainer as one assembly.
B. CRANKSHAFT ASSEMBLY
• J-30 Prior to S/N 3854
• J-60 Prior to S/N 7476
1. Remove connecting rod bolts and cap.
NOTE:
Match marks and deep halves together.
2. Connecting rod and crosshead must be moved all the way forward to clear crankshaft.
3. Remove crankshaft bearing retainers and seals, and shims. These shims should be tied together and marked
for reassembly at their original location.
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Disassembly…
I. POWER END
B. CRANKSHAFT ASSEMBLY
(Continued)...
! ATTENTION !
COVER KEYWAYS TO PROTECT OIL SEALS DURING REMOVAL.
4. Rotate No. 1 throw to front, support the crankshaft, and remove it from either side, tapping it out with a brass bar
to prevent damage to the end. This will automatically remove one of the main bearing outer races. The other
race may be removed by knocking it out with a brass bar. Tag the outer bearing races so they may be
reassembled with the same bearing cone and roller assembly.
• 30T, 60T, and 80T
1. Remove connecting rod bearing cup and both inserts.
NOTE:
Match marks on rod and cap and keep halves of inserts together.
2. Connecting rod and crosshead can be removed through cradle chamber without disturbing the crankshaft.
Interference with plungers and stuffing box nuts is possible depending on plunger size. Remove plungers if
necessary.
3. Remove crankshaft bearing oil seal retainers and gasket.
4. Use puller screws in crankshaft bearing cage "back-out" holes, if necessary, and remove crankshaft assembly
with main bearing cage from the left side of the pump. During removal have No.1 throw on crankshaft forward.
• J-100 Prior to S/N 9568 and J-150
1. Remove all the connecting rod bearing caps and both inserts. Keep halves inserted together.
2. Connecting rod and crosshead must be moved all the way forward with intermediate rods removed, to clear
crankshaft.
3. Remove crankshaft bearing oil seals retainers and gasket.
4. Use puller screws in crankshaft bearing cage "back-outs" holes, if necessary, and remove crankshaft assembly
with main bearing cage from the left side of the pump. During removal have No.1 throw on crankshaft forward.
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Disassembly…
I. POWER END
B. CRANKSHAFT ASSEMBLY (Continued)...
• 100T, 130T, 165T, 200T, 250T and 300Q
1. Remove connecting rod bearing cap and both inserts. Keep halves of inserts together.
2. Connecting rod and crosshead can be removed through cradle chamber without disturbing the crankshaft.
Interference with plungers and stuffing boxes is possible depending on plunger size. Remove stuffing boxes if
necessary.
3. Remove oil wiper troughs. (200T, 250T and 300Q)
4. Remove right hand bearing retainer and gasket.
5. Remove left hand bearing retainer and gasket and remove capscrews from bearing cage.
6. Crankshaft can be removed from left side of pump only. Puller holes are provided in the bearing cage if needed.
Extreme care should be used in removing the crankshaft so as not to damage the center support bearings or the
bearing journals on the crankshaft of the 300Q.
C. CRANKSHAFT BEARINGS - ALL PUMPS
The crankshaft main bearings may be inspected while on the crankshaft and should not be removed unless
necessary. A puller is required when replacement is necessary.
NOTE
: Keep the component parts of the bearings together if they are to be re-installed. They are match marked
and must be correctly assembled as a unit.
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Disassembly (Continued)…
II. FLUID END
A. FLUID CYLINDER REMOVAL
•30T, 60T and 80T
1. Disconnect piping.
2. Remove the eight (8) fluid cylinder hex nuts and slide cylinder forward over the main frame studs.
• 100T, 130T, 165T, 200T, 250T and 300Q
1. Fluid cylinders can be removed without disturbing the stuffing boxes or plungers. But it is recommended that the
stuffing boxes and plungers be removed for easier access to the lower cylinder studs and nuts.
2. Disconnect piping.
3. Remove nuts holding stuffing box retainer in place.
4. Slide retainer clear of the cylinder studs.
5. Remove fluid cylinder retaining socket head capscrews.
B. STUFFING BOXES AND PLUNGER REMOVAL
• 30T, 60T and 80T
1. Rotate crankshaft until the intermediate rod is in the back position of its stroke. Loosen the plunger lock screw
(if used), and disconnect the plunger from the intermediate rod.
! ATTENTION !
USE BACK-UP WRENCH ON THE CROSSHEAD TO PREVENT DAMAGE TO CONNECTING ROD.
2. Slide the plunger forward in the stuffing box. Unscrew the intermediate rod. Remove the clip holding the
intermediate rod wiper retainer; remove the rod and retainer as one assembly.
3. The plunger can now be slid back out of the stuffing box and removed through the cradle chamber.
4. Remove stuffing box nut and packing.
5. For removal of the stuffing box, the fluid cylinder must be first removed.
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Disassembly…
II. FLUID END
B. STUFFING BOXES AND PLUNGER REMOVAL (Continued)...
• 100T, 130T, 165T, 200T, 250T and 300Q
1. Rotate the crankshaft until the intermediate rod is all the way forward (at the end of the discharge stroke).
Remove the intermediate rod to crosshead lock screw, remove the plunger clamp assembly, and brake the intermediate
rod loose from the crosshead one-fourth (1/4) turn.
! ATTENTION !
A BACK-UP WRENCH MUST BE USED ON THE CROSSHEAD.
2. With the intermediate rod in the forward position, slide the plunger forward in the stuffing box.
3. Rotate the crankshaft until the intermediate rod is in the back position of its stroke. Unscrew at the intermediate rod
and the intermediate rod wiper retainer capscrews then remove the rod and retainer as one assembly.
4. The plunger can now be slid back out of the stuffing box and removed through the cradle chamber.
5. Remove the stuffing box nut, lube fitting (copper tubing if lubricator is used), and packing.
C. FLUID END VALVE REMOVAL
Refer to valve section located in the middle of this manual.
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Assembly…
I. POWER END
A. CRANKSHAFT AND MAIN BEARINGS
• 30T, 60T, and 80T
1. Thoroughly clean and remove all burrs from the I.D. of the cone and roller assembly and from the bearing
seating surfaces on the crankshaft.
2. Heat the cone and roller assembly in an electric oven or oil bath to 300°F (149°C). It is recommended that a
thermometer be used to prevent overheating.
3. After the bearings have been brought up to temperature and with the crankshaft firmly supported, install the cone
and roller assemblies on the crankshaft. The large O.D. must go on first and be positioned next to the shoulder on
the crankshaft. Make sure the cone and roller assemblies are firmly against the shoulders on the crankshaft.
4. Allow the crankshaft and bearing assembly to cool before installing in the power end.
5. Make sure the main bearing openings in the frame are clean and free of burrs.
NOTE:
The crossheads and connecting rods on old J-30 pumps prior to S/N 3854 and J-60 pumps prior to S/N
7476 must be installed prior to replacing the crankshaft assembly.
6. With the cone and roller assemblies of the main bearings in place on the crankshaft, slide the crankshaft from
either side through the main bearing openings in the power end frame with No. 1 throw forward.
7. Install the crankshaft main bearing outer races or cups; the thin edge of the tapered race leading into the bore over
the cone and roller assembly.
8. Place the crankcase main bearing shims, amounting to approximately .050" (1.27 mm) in thickness, on either
crankshaft bearing retainer. If the old
bearings and retainers are being re-installed, use the same amount of shims
as before.
NOTE:
The following steps (9, 10a and 10b) are necessary only if new bearings are being installed. When the
same crankshaft main bearings are being reassembled, use the same amount of shims as were previously used
and use the steps as a check for adjustment.
9. Assemble the crankshaft bearing retainer and shims (less oil seal) to the main frame and tighten in place with the
proper capscrews.
10. Install the other crankshaft bearing retainer (less oil seal) in the same manner as in step nine (9) above. To
determine the correct amount of shims when installing new bearings, the following steps are recommended.
a. When first installing shims, use only enough shims to produce a slight drag
when the crankshaft is rotated. Tap shaft on each end sufficient to insure that
the bearing outer race is tightly against the retainer.
b. Then add enough shims to remove the slight drag or pre-load (approximately
.005" [.127 mm] to .007" [.178 mm]), depending on the amount of pre-load).
The bearings are correctly adjusted when there is .003" to .005" end-play of the
crankshaft and the crankshaft will rotate freely. Do not pre-load bearings.
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Assembly…
I. POWER END
A. CRANKSHAFT AND MAIN BEARINGS
(Continued)...
• 100T, 130T, 165T, 200T, 250T and 300Q
The crankshaft should be clean and free of burrs. The cone and roller assemblies are to be heated in an electric
oven or oil bath to 300°F (149°C). The use of a thermometer is recommended. Bearing parts are match marked and
should be noted prior to heating. Make sure parts are not
interchanged.
1. Right Hand Bearing (Short Shaft Extension):
a. Install chain sprocket on 165T.
b. With a bearing cone and roller assembly at proper temperature, install on the crankshaft with the thick edge of
the taper against the shoulder.
c. Assemble the bearing spacer and outer race on the crankshaft and against the inboard cone and roller.
d. Install outboard cone and roller assembly; thin edge against the bearing spacer.
e. Tighten the lock nut and lock with lock washer prong. (This can best be done after
the shaft is in the pump).
Make sure cone and roller assemblies are tight against the bearing spacer.
2. Left Hand Bearing (Long Shaft Extension):
a. With bearing cone and roller at proper temperature, install on the crankshaft with the thick edge of the taper
against the shoulder.
b. Assemble the bearing spacer against the inboard cone and roller.
c. Drive outer race into the bearing cage against bottom shoulder.
d. Install the outer race and cage assembly and gasket against inboard cone and roller.
e. Install outer cone and roller assembly; thin edge against the bearing spacer.
f. Assemble lock nuts and lock washer.
g. Tighten lock nut and lock with prong of lock washer. Make sure cone and roller assemblies are tight against the
bearing spacer.
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Assembly…
I. POWER END
(Continued)…
B. CRANKSHAFT AND CENTER SUPPORT ROLLER BEARING ASSEMBLY
• 200T, 250T and 300Q
1. Check the crankshaft bearing surfaces for nicks or burrs and remove.
2. Install snap ring in groove nearest left hand bearing cage.
3. Heat inner race of roller bearing to not more than 300°F (149°C) in electric oven or oil bath and install against snap
ring.
4. Install second snap ring on first bearing.
5. Install snap rings in the frame bearing support areas. Install rings in inner grooves.
6. Install snap rings in the frame bearing support areas. Install rings in inner grooves.
7. Roller bearing assembly is a possible light press fit into the frame bore. Slide or gently tap the bearing assemblies
into place against the snap rings.
8. Install outer snap rings.
• 100T, 130T, 165T, 200T, 250T and 300Q
1. Install the crankshaft assembly in pump locating the crankshaft bearing cage at the left side with the "TOP" mark
up and the plastic gasket in its proper location. Use care when passing the bearing inner race through the first
roller assembly.
NOTE:
The crossheads and connecting rods on the old J-100 pumps prior to S/N 9568 must be installed prior to
replacing the crankshaft assembly.
2. Check Timken locknuts and lockwashers and tighten securely.
3. Install right hand bearing retainer and gasket. Make certain "TOP" mark is facing upwards. Check clearance of
Labyrinth seal to shaft. There should not
be any metal-to-metal contact.
4. Install left hand bearing retainer and gasket as described previously.
NOTE:
If pump is to have a gear reducer, it is necessary to replace the left hand bearing retainer with a retainer that
has a double drain back area in the labyrinth seal area. Do not
use dirt excluder inside the gear reducer.
5. Install dirt excluder tightly against each bearing retainer -- except as noted above.
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Assembly…
I. POWER END
(Continued)…
C. CONNECTING ROD AND CROSSHEAD ASSEMBLY (ALL PUMPS)
1. Press the crosshead pin bushing into the connecting rod.
2. Ream bushing to size (refer to page 21 for dimensions). Blue with pin and scrape bushing to remove high spots. (If
service bushings are used, reaming will not be necessary in most cases).
3. Install the crosshead pin by pressing into crosshead or to facilitate assembly, the crosshead may be heated to no
more than 300° F (149°C) in an electric oven or bath.
NOTE: Crossheads are marked "TOP" on extension rod end. Connecting rods and bearing caps are match marked
as units. Install connecting rod in crosshead so match marks on top of crosshead correspond.
D. CONNECTING ROD TO CRANKSHAFT ASSEMBLY
• J-30 and J-60
(With Old-Style Straight-Cut Aluminum Connecting Rods)
1. Thoroughly clean and remove all burrs and nicks from connecting rod and crankshaft journals.
2. The connecting rod journals are a precision fit and require no adjustment. Make sure the match marks on
connecting rod and cap are the same and on the same side.
3. Install connecting rod bolts and lock-type nuts. Use torque wrench and tighten to torque specified in chart below.
• J-100 and J-150
(With Old-Style Straight-Cut Connecting Rods)
The connecting rod bearings are precise fitting inserts requiring no adjustment. When reinstalling the same inserts,
assemble them in pairs at their original location. Make sure the match marks on connecting rod and cap are the same and
on the same side.
1. Install rod half of bearing, seat connecting rod on the shaft and install bolts.
2. Install other half of bearing and bearing cap, making sure dowel pins in the bearings are properly joined. Using
a torque wrench, tighten to the torque specified in the chart below.
TORQUE: FT-LBS
PUMP 30T
60T
80T
100T
130T
165T, 200T,
250T, 300Q
Straight, Cut Rod w/ Bolts & Locknuts 20 45 85 --
Straight, Cut Rod w/ Capscrews -- -- 150 --
Slant Cut Rod w/ Capscrews 30 75 150 250
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Assembly…
I. POWER END
D. CONNECTING ROD TO CRANKSHAFT ASSEMBLY
(Continued)…
• 30T, 60T, 80T, 130T (New Style), 165T, 200T, 250T and 300Q
The connecting rod bearings are precision fitting inserts requiring no adjustment. When re-installing the same
inserts, assemble them in pairs at their original location. Make sure the match marks on the connecting rod and cap are
the same on the corresponding sides.
Figure 1
NOTE: It is possible to install these bearing shells incorrectly. Please follow instructions carefully.
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Assembly…
I. POWER END
D. CONNECTING ROD TO CRANKSHAFT ASSEMBLY
• 30T, 60T, 80T, 130T (New Style), 165T, 200T, 250T and 300Q
(Continued)…
1. Check bearing halves for pin engagement and fit over the dowel pin in the cap half of the connecting rod. Please
note the drawing and match marks.
2. Install both bearing halves on the crankshaft with the dowel pins engaged as shown. Position crankshaft throw to
the rear.
3. With bearing shells in position (as shown in drawing, pg. 31), fit the cap half of the connecting rod over the bearing
shells. Make certain the dowel pin is seated properly and the lubrication hole in the bearing is toward the front so as
to match the oil hole in the connecting rod.
NOTE:
Later model connecting rods have the dowel pin located in the rod half. With this pin, the location of the rod
is positioned first on the bearing shell.
4. Slide the connecting rod back over the crankshaft throw using caution so the outer surface of the aluminum insert is
not damaged. Note the match numbers of the cap and rod to be certain the rod is assembled correctly.
5. Install the two (2) capscrews and torque as shown in chart. Lockwire the capscrews securely.
E. INTERMEDIATE RODS AND OIL SEAL RETAINERS
• 30T, 60T, 80T, 100T, and 130T
Install two oil wipers; lips facing the power end. Open one from the power end side and one from the fluid side. On
the power end side the wiper O.D. should be flushed with the face of the retainer. On the fluid end side, the wiper
should be pressed in the retainer until it contacts the shoulder in the middle of the retainer. Install the third wiper on the
fluid end side of the retainer with lip facing the fluid end.
NOTE:
Make sure O.D. wiper and I.D. of retainer are clean and dry before installation of the wiper.
• 100T, 130T, 165T, 200T, 250T and 300Q
Install two (2) oil wipers, lips facing the power end, and two (2) oil wipers with lips facing the fluid end. The inner wipers
should shoulder against the raised area in the center of the retainer. Make certain the retainer and wipers are clean and dry
before installation. An oily or greasy surface can cause the wipers to become loose.
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Assembly…
I. POWER END
E. INTERMEDIATE RODS AND OIL SEAL RETAINERS
(Continued)…
• ALL PUMPS
Rotate the crankshaft until the crosshead is all the way forward and install the retainer and rod as a unit.
NOTE:
Make sure retainer gasket is in place prior to installation. Tighten rod and the crosshead using a back-up
wrench on the crosshead to the following torques:
Threads 30T
60T
80T
100T
130T
165T, 200T, 250T & 300Q
Dry (ft-lbs) 175 200 400 480
Lubricated (ft-lbs) 150 150 325 385
II. FLUID END
A. STUFFING BOXES AND PLUNGERS
Plungers are available in ceramic or steel.
! ATTENTION !
NATIONAL OILWELL VARCO DOES NOT RECOMMEND THE USE OF CERAMIC PLUNGERS FOR PUMPING
FLAMMABLE LIQUIDS.
• 30T, 60T, and 80T
1. Thoroughly clean and remove any nicks or burrs from all mating surfaces of the main frame, fluid cylinder and
stuffing boxes.
2. Insert stuffing boxes into main frame.
NOTE:
The stuffing box is a press fit in the main frame and will have to be driven into position.
! ATTENTION !
PREVENT DAMAGE BY PLACING A BLOCK OF WOOD OVER THE STUFFING BOX FACE.
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Assembly…
II. FLUID END
A. STUFFING BOXES AND PLUNGERS
• 30T, 60T, and 80T
(Continued)...
NOTE:
Stuffing box flange face should extend .001" to .004" (.025 mm to .102 mm) beyond the frame face to
assure proper crush on the stuffing box seal. If this condition does not
exist, premature gasket failure will occur!
3. Insert seals (stuffing box to fluid cylinder) into grooves in the face of the stuffing boxes. Grease lightly to hold in
place until fluid cylinder is installed.
4. Assemble packing in stuffing box bore as per instructions included with each set of packing, or as described on
pages 36 to 39.
• 100T, 130T, 165T, 200T, 250T and 300Q
1. Rotate crankshaft until the intermediate rod is at the end of the suction stroke.
2. With the stuffing box packing and plunger installed, slide the assembly into the pilot bore. If properly aligned
and lubricated, the stuffing box will slide easily into place. When a flanged retainer is used with the stuffing box,
make certain the lubrication fitting hole is at the top.
3. Tighten stuffing box hex nuts to the following torque values:
Threads 100T, 130T
165T, 200T,
250T & 300Q
Dry (ft-lbs) 400 800
Lubricated (ft-lbs) 325 640
4. Install rubber baffle (if used) on intermediate rod and connect plunger to intermediate rod with threaded
connection or clamped connection. Make sure the mating surfaces are clean and free from nicks and burrs.
Tighten plunger rod using the following torques (threaded plungers):
Threads 100T, 130T 165T, 200T, 250T &
300Q
Dry (ft-lbs) 400 480
Lubricated (ft-lbs) 325 385
Tighten capscrew in plunger clamp assembly as follows (clamped plungers):
PUMPS: 100T, 130T 165T, 200T, 250T & 300Q
Maximum Torque Value
15 ft.-lbs. 15 ft.-lbs. (21) 3/8" 1-bolt clamp
30 ft.-lbs. (45) 1/2" 2-bolt clamp
5. Adjust stuffing box nut. (Adjusting nut should be tightened with the bar furnished with the pump). See
instructions on pages 36 through 39 for proper packing procedure and lubrication practices.
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Assembly…
II. FLUID END
(Continued)...
B. FLUID CYLINDER (ALL PUMPS)
1. Install fluid cylinder, check stuffing box seals as cylinder is moved into place.
2. Tighten nuts alternately, pulling fluid cylinder up evenly; torque nuts to the following values:
THREADS 30T 60T
80T
100T
130T
165T, 200T,
250T & 300Q
Dry (ft-lbs) 300 500 400 800
Lubricated (ft-lbs) 240 450 325 640
3. When installing the suction discharge piping, always use the capscrews furnished with the pump as they are
special high-strength and double heat-treated.
C. FLUID VALVES – SPHERICAL, TAPERED SEAT BOTTOM GUIDED AND CAGE TYPE (ALL PUMPS)
See Valve section of this manual.
D. PIPING INSTALLATION (ALL PUMPS)
1. Install flanges on fluid cylinder with special high carbon double heat-treated capscrews furnished with the pump.
2. Install suction and discharge lines to flanges.
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Assembly…
II. FLUID END
(Continued)...
E. PLUNGER PACKING INSTALLATION
1. 850-N Packing
It is important that the following procedure be observed when replacing old packing to prevent rapid packing
wear:
a. Remove front crosshead reservoir cover plate and rotate pump to bring the desired plunger to the forward
position.
b. Back off locking set screw (if used) at intermediate rod crosshead connection and intermediate rod plunger
connection. Using back-up wrenches, loosen connection one-fourth (1/4) turn.
c. Rotate crankshaft until plunger is all the way back. Unscrew plunger or remove clamp assembly and slide
plunger forward.
d. Remove intermediate rod and intermediate rod seal retainer from as one assembly.
e. Remove plunger and old packing, making sure stuffing box is clean. Plungers and boxes may be removed as
an assembly by rotating the pump so the intermediate rod is all the way back, thereby disconnecting the
plunger and sliding the stuffing box back and out.
f. Oil each ring with light oil (DO NOT GREASE), and install packing per sketch included with the packing. Make
sure the lips on the sealing rings face pressure shown.
g. Install gland and pull down hand tight against packing.
h. Install plungers, then pull adjusting nut down as tight as possible with bar furnished with the pump. DO NOT
USE A CHEATER!!
i. Install intermediate rod and retainer. Connect plunger and torque properly as outlined on page 34 & 35.
j. For 850-N packing, start pump and operate under pressure; retighten adjusting nut. After pump has been
running for two (2) or three (3) hours under pressure, packing will seat itself and the adjusting nut should be
tightened as much as possible to eliminate any movement of the packing in the stuffing box. Use the bar
furnished with the pump. Do not use a cheater!
k. The adjusting nuts should be checked and each tightened for the first 2 or 3 days until the packing is completely
seated and the adjusting nuts cannot be tightened any further. Use the bar furnished with the pump. Do not
use a cheater!
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Assembly…
II. FLUID END
E. PLUNGER PACKING INSTALLATION
(Continued)...
2. 1045 PACKING (also called No. 265)
It is important that the following procedure be observed when replacing old packing to prevent rapid packing
wear:
a. Remove crosshead reservoir and rotate crankshaft to bring plunger forward.
b. Back off locking set screw (if used) at intermediate rod crosshead connection and intermediate rod plunger
connection. Using back-up wrench, loosen this connection one-fourth (1/4) turn.
c. Rotate crankshaft until plunger is all the way back, unscrew plunger or remove clamp assemblies and slide
plunger forward.
d. Remove intermediate rod and intermediate rod seal retainer from pump as one assembly.
e. Remove plunger and old packing, making sure stuffing box is clean. Plungers and boxes may be removed as
an assembly by rotating the pump so the intermediate rod is all the way back, disconnecting the plunger and
sliding the stuffing box back and out.
f. Starting with the first Phenolic ring, seat each ring individually in the order packaged. Eliminate the No. 1
Phenolic ring when using a sleeve washer with ceramic plungers.
g. Install plunger and make-up the adjusting nut tight to insure the entire packing set is properly seated. The nut
should be loosened and adjusting hand tight.
h. Install intermediate rod and retainer. Connect plunger and torque properly as outlined on page 34 & 35.
i. Start the pump and run with normal system pressure. Tighten the adjusting nut, carefully watching for
excessive heat build-up. Continue to tighten the nut until it is a good, snug fit and the nut shows no movement
in the threads.
! IMPORTANT !
IF THE ADJUSTING NUT LOCKS AND CANNOT BE MOVED, IMMEDIATELY REMOVE THE PRESSURE FROM THE
PUMP, BACK OFF THE NUT ONE-HALF (1/2) TURN, AND START AGAIN.
j. This packing may or may not leak, depending on the circumstances, and it does not require continuous
adjustment. It should be checked and re-tightened the first day or two after installation of new packing, but
should require very little attention after this.
k. This packing can be used on hard coated or ceramic plungers without lubrication, but as with any packing,
extended life is possible through the use of lubrication. When using a mechanical or drip type lubrication
system in water service, use rock Drill (Air Drill) Oil of the proper viscosity. Drip five to seven drops per minute.
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Assembly…
II. FLUID END
(Continued)...
E. PLUNGER PACKING INSTALLATION
3. 699 PACKING
For top performance from the soft packing of "Teflon" fiber read and carry out the following instructions. Use the
above method to remove and re-install intermediate rod and plunger.
a. Packing may be butt or diagonal cut. Stagger joints in successive rings at least 90°.
b. Slide rings into stuffing box, but do not
tap or drive rings into place. Tests have shown that this
method gets maximum performance from soft packing of "Teflon" fiber.
c. Tighten stuffing box nut finger tight and start pump. Packing should be leaking, if not, loosen
stuffing box nut. Remember, install this soft packing with a minimum of gland pressure to
minimize friction and heat build-up.
d. Reduce leakage to desired level by tightening stuffing box nut about 1/6 turn at a time every few
minutes.
e. If gland heats up to a temperature that will boil water, back-off stuffing box nut and repeat run-in
until temperature remains after nuts are re-tightened.
"Teflon" is DuPont's register trademark for TFE- Fluorocarbon fiber.
4. SPRING LOADED KEVLAR MULTIPLEX PACKING
-
Recommended Packing Procedure -
a. Before re-packing, determine cause of failure.
b. Remove plunger, stuffing box nut, and all internal parts in stuffing box. Remove stuffing box itself if necessary to
clean.
c. Clean all parts and determine if parts are worn or reusable. Replace all worn parts.
d. Soak new packing elements in oil. Lubricate all other parts.
e. Note the depth of stuffing box bore. If greater than four inches (4"), install appropriate spacer. See appropriate
parts-list for applicable spacer.
f. Install parts into stuffing box in the following order: spacer (if needed), spring, follower (small end first), Kevlar
ring and brass ring (with care), (alternate these items three (3) times, twice for 30T), and then add the bushing
(gland ring).
g. Screw on the nut -- hand tight.
h. Insert plunger into packing assembly.
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Assembly…
II. FLUID END
E. PLUNGER PACKING INSTALLATION
4. SPRING LOADED KEVLAR MULTIPLEX PACKING
(Continued)...
i. Tighten packing nut. Bushing should seat and shoulder against stuffing box face. Back off the nut one-half
turn.
j. If stuffing box has been removed, re-install assembly onto multiplex.
k. Connect plunger to intermediate rod and tighten.
l. Insert stop pin into stuffing box nut.
m. Fill lubricator with rock Drill Oil for normal temperature, steam cylinder oil for high temperature fluids. Fill
lubricator lines by pumping it manually. Check its operation.
n. Start pump at slow speed and low pressure if possible, tighten stuffing box nut and insert stop pin in hole. Watch
for a short period of time. Oil if needed.
o. Set lubricator to twice normal rate. After 24 hours, resume normal operation. Check stuffing box for excessively
high temperatures and abnormal leakage.
Figure 2
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Plunger Pump Valves…
I. OPERATIONAL MAINTENANCE
A. SUCTION AND DISCHARGE
As with any plunger pump, the necessity for having an adequate suction head and proper piping design of both
suction and discharge cannot be over emphasized.
! ATTENTION !
NOISY VALVES, DUE TO IMPROPER FILLING, CAN LEAD TO SHORT LIFE AND RAPID MECHANICAL WEAR
OF THE POWER END PARTS.
B. VALVE COVERS
THE VALVE COVERS, AS USED WITH THE NATIONAL OILWELL VARCO PLUNGER PUMPS, MUST
BE KEPT
TIGHT AT ALL TIMES. DUE TO THE DISCHARGE PRESSURE APPLYING A CONSTANT LOAD TO THE
COVERS, IT IS NOT
POSSIBLE TO CHECK THEIR TIGHTNESS WITH THE PUMP RUNNING OR WITH
PRESSURE IN THE CYLINDER.
Bleed off the discharge pressure and check the tightness of the covers as outlined under the assembly procedure
for the type of cover used.
C. VALVE CAGE AND COVER SEALS
1. Cage Type Valves
There are three identical seals in each valve stack. The seals perform a very important function in this
design valve and we recommend that they be changed any time they are removed from the pump.
2. Cover Seals
The cover seals should be replaced as required.
D. VALVE SPRINGS
The springs used with the NATIONAL OILWELL VARCO valves are made of inconel alloy or stainless steel.
! ATTENTION !
THESE SPRINGS SHOULD BE CHANGED APPROXIMATELY ONCE A YEAR IN ORDER TO ASSURE PROPER
VALVE ACTION AND ELIMINATE THE POSSIBILITY OF A SPRING BREAK.
CAUTION
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Plunger Pump Valves…
I. OPERATIONAL MAINTENANCE
(Continued)…
E. VALVE CAGES
The cages are normally made from aluminum, bronze, stainless steel or hardened steel, depending on the type of
service. These cages are precision machined to give long, continuous service.
F. VALVE AND SEAT
1. Cage Type Valves:
There are four basic valve and seat assemblies available, depending on the type of service. They are the
disc type, the ball type, the wing-guided type, and the spherical type. These valves can be made available in a
variety of materials on special order.
2. Tapered Seat Valves:
There are two basic OEM valve & seat assemblies available, depending on the type of service. They are
the bottom guided (BG) tapered seat valves and the spherical tapered seat valves. The BG valve and seat are
available in a variety of materials depending on the type of fluid being pumped. The spherical valves are made
of Nitronic 50 material.
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Plunger Pump Valves (Continued)…
II. CAGE TYPE VALVES
The NATIONAL OILWELL VARCO cage type valve is a patented design valve. This manual will assist in performing
the normal maintenance requirements of the valves.
A. NOMENCLATURE
1. Acme threaded valve cover with center bolt. (One piece solid cover used on 30T, 60T or 80T).
2. Retainer (not used on 30T, 60T or 80T).
3. Cover and Cage Seal, Suction or Discharge (interchangeable).
4. Disc Valve Cage, Suction or Discharge (interchangeable).
5. Valve Spring, Suction or Discharge (interchangeable).
6. Stop, Valve Disc, 30° Taper Cut in Cage, not used in Ball Valve Cages.
7. Valve Disc, Valve suction or Discharge (interchangeable).
8. Valve Seat, Discharge only - Small bore (I.D.) used to retain Suction Spring.
9. Valve Seat, Suction Only - Large Bore (I.D.) same as Suction Throat Bore.
10. Valve Seat Suction and Discharge (interchangeable).
Figure 3
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Plunger Pump Valves…
II. CAGE TYPE VALVES
(Continued)…
B. VALVE SERVICING TOOLS (charts)
The valve servicing tools referred to on the following pages are listed below:
CAGE TYPE VALVES
(SPHERICAL, BOTTOM GUIDED, BALL, & DISC)
Pump Size
Valve
Kit
Cage
Puller
Cage
Bumper
Seat
Drive
Magnet
Retriever
30T-2H, 60T-3H, 80T-3H 1710292 1710249 1790080 1790040 1790034
30T-2L, 60T-3M, 80T-3M, 100T-4H, 130T-4H 1711251 1711249 1790080 1790041 1790034
100T-4M, 130T-4H, 130T-4M, 165T-5H,
165T-5HA, 200T-5H, 200T-5HA, 250T-5H,
250T-5HA
1712342 1712242 1790080 1790042 1790034
165T-5M, 200T-5M, 250T-5M, 300Q-5M 1713068 1713069 1790085 1790043 1790034
375T-7H 1715338 1715339 1790085
1790053
G-1790062
G-1715342
1790034
165T-5HB, 200T-5HB, 250T-5HB, 300Q-5H 1713351 1713352 1790085 G-1790064 1790034
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Plunger Pump Valves…
II. CAGE TYPE VALVES (Continued)…
C. DISASSEMBLY PROCEDURE
1. Remove threaded cover. (The covers should be tight enough to require an extension on a 24" pipe wrench to
loosen). Inspect threads for wear, which could occur if cover was loose.
2. Remove retainer with hook on a magnetic retriever. Some retainers are tapped with a lifting thread for removal.
3. Remove cover seal from top of cage with hook on magnetic retriever. (This hook is rough ground at the plant
and should be finished to a flat sharp edge to be most effective). (Figure 4, page 45).
4. Before removing spring, observe amount of pre-load. Spring should extend about 1/8" to 3/16" above the top of
the cage. It is not recommended that you stretch a spring to secure the correct pre-load as this causes physical
damage to the spring. This should be done only on these cases where a new spring is not available. Remove
the spring with hook. (Figure 6, page 45).
5. Remove cage with puller as illustrated. Under normal conditions, these cages are readily removed. If the fluid
being pumped makes mineral deposits (gyp) in the cage bore, this will immediately alert the customer that he
should start some type of treating program to protect his complete system.
6. Using magnet or hook, remove valve disc. (Figure 6, page 45).
7. Insert valve seat driver in discharge seat and rock back and forth. This action will loosen the seat and allow it to
be removed with the hook. (Figure 7, page 45).
8. Assemble upper valve as removed to keep parts together.
9. Remove seal from top of lower cage.
10. Remove spring with hook. Note:
Notice if spring had proper pre-load.
11. Remove cages using same procedure as No. 4.
12. Using magnet, remove valve disc.
13. Insert valve seat driver in suction seat and rock back and forth. This action will loosen the seat and allow it to be
removed with the hook.
14. Assemble lower valve as removed to deep parts together.
15. Remove bottom seal.
16. Inspect cylinder bore with flashlight paying particular attention to sealing areas.
*If necessary, repeat the above steps in the remaining cylinder bores
.
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Plunger Pump Valves…
II. CAGE TYPE VALVES
C. DISASSEMBLY PROCEDURE
(Continued)...
Figure 4 Figure 5
Figure 6 Figure 7
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Plunger Pump Valves…
II. CAGE TYPE VALVES
(Continued)…
D. VALVE PARTS INSPECTION
1. CAGE (Bottom Guide, Disc, Ball, or Spherical)
The cages used in the National Oilwell Varco Valve Assembly are precision machined and designed for long
trouble-free service. Erratic valve action associated with poor suction conditions can cause accelerated wear on
this part.
! ATTENTION !
A LOOSE COVER WILL ALLOW CAGE MOVEMENT AND WILL CAUSE EXTENSIVE DAMAGE TO CAGE AS
WELL AS FLUID END.
Each cage that is removed should be inspected at the following points referred to in the drawing, Figure 8.
a. Inspect for wear in this area. It is best to do this with the valve and seat in the cage, therefore, a more
accurate decision can be made. The wear in this area, which can be judged by the sideways movement
of the disc, should not exceed 1/2 the width of the seating surface of the disc valve or more than 1/8" to
3/16" for the ball valve. These are maximum figures and could result in poor valve action and some loss
of efficiency. If in doubt, change the cage.
b. Inspect the valve seat shouldering area for signs of wear or hammering. If this portion of the cage is
cracked or battered, the cage should be replaced. This will only happen if the cage is allowed to move
in the bore due to loose covers.
Figure 8
c. Inspect cage bore for excessive spring. In most cases this area will wear only if there is poor valve
action or extremely corrosive water that attacks the cage material in this wear zone.
d. Inspect O.D. of cage for nicks, burrs or washers. Clean cage thoroughly before replacing.
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Plunger Pump Valves…
II. CAGE TYPE VALVES
D. VALVE PARTS INSPECTION
(Continued)...
2. VALVE, BOTTOM GUIDED AND SEAT
The standard (-25) NATIONAL OILWELL VARCO bottom guided disc and seat is made from a specialty
stainless steel, which is strictly resistant to corrosion. An optional heat treated stainless steel (-4) valve is
available for less corrosive fluids that contain solids. The standard valve is non-magnetic, so a loop is provided
for removal from the fluid cylinder.
The following Inspection points should be observed:
a. The valve seat and sealing surface should be closely inspected for evidence of excessive wear and /or
washed areas. The amount of wear can be determined by comparison with a new valve and seat.
Worn valves and seats should be replaced.
b. Inspect the valve guides and seat bores for guide wear. Valves with excessively worn or broken guides
and grooved seats should be replaced.
c. Inspect the outside surface of the valve and seat for nicks, burrs or washers, and thoroughly clean
before assembly.
3. VALVE, SPHERICAL VALVE AND SEAT
The standard NATIONAL OILWELL VARCO spherical valve & seat is made from a specialty stainless steel
which is strictly resistant to corrosion. The valve is non-magnetic so a loop may be provided for removal from
the fluid cylinder.
The following inspection points should be observed:
a. The valve seat & sealing surface should be closely inspected for evidence of excessive wear and/or
washed areas. The amount of wear can be determined with a new valve & seat. Worn valves & seats
should be replaced.
b. Inspect the outside surface of the valve & seat for nicks, burrs, or washes, and thoroughly clean before
assembly.
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Plunger Pump Valves…
II. CAGE TYPE VALVES
D. VALVE PARTS INSPECTION
(Continued)...
4. VALVE, DISC AND SEAT
The NATIONAL OILWELL VARCO disc-type valve is made from heat treated stainless steel. An optional
316 stainless steel valve is available for severe corrosive service. The 316 stainless steel valve is non-magnetic
and cannot be picked up with a magnet. The heat-treated valve is magnetic:
The following inspection points should be observed (See Figure 9):
a. The valve and seat sealing surfaces should be closely inspected for evidence of excess wear and/or
washed areas. The amount of wear can be determined by comparison with a new valve and seat or by
observing the amount of undercut still remaining on the disc seating surface. If this face is flat, the valve
disc and probably the seat should be replaced. Small washes or cuts in the seating surface can
sometimes be removed with emery cloth. The seating surfaces should then be ground, or polished, to a
smooth finish. A good field method is to lay the fine emery cloth or crocus cloth on the milled top of the
cylinder and polish the disc and seat on this surface.
b. Inspect the outside surface of the disc and seat for nicks, burrs, or washes, and thoroughly clean before
assembly.
Disc & Seat Spherical Valve & Seat
Figure 9
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Plunger Pump Valves…
II. CAGE TYPE VALVES
D. VALVE PARTS INSPECTION
(Continued)...
5. VALVE, BALL & SEAT
The NATIONAL OILWELL VARCO ball and seat valve is composed of the same material as the Fluid
Packed Supreme Ball and Seat. The seat is reversible and the seating surfaces should indicate if replacement
is necessary.
6. SPRINGS
The springs as used in the NATIONAL OILWELL VARCO cage-type valve assemblies are designed for long
trouble-free service. If installed correctly with the proper pre-load and operated under normal conditions, which
include a good suction that provides a smooth valve action, these springs will operate for a year or more.
! ATTENTION !
IT IS BEST YOU CHANGE SPRINGS AND DESTROY THE OLD ONES APPROXIMATELY ONCE A YEAR. IF
THE SPRINGS FATIGUE AND BREAK, THE RESULTING VALVE ACTION CAN DAMAGE THE CAGE AND
VALVE. HERE AGAIN, IF IN DOUBT, CHANGE THE SPRING; THEIR COST IS VERY MODERATE.
7. SEALS, VALVE CAGE
The NATIONAL OILWELL VARCO cage-type valves are of a stacked design and depend on the seal at the
top, middle and bottom of the stack to isolate the suction and discharge valves and their associated changes in
pressure. These seals should be changed every time the valves are removed from the pump. If it is absolutely
necessary to re-use these seals, install the best seal in the middle stack, the next best at the bottom and the
worst seals on the top covers. Replace used seals with new ones as soon as possible.
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Plunger Pump Valves…
II. CAGE TYPE VALVES (Continued)…
E. ASSEMBLY PROCEDURES
1. After all parts have been thoroughly inspected and cleaned, assemble each valve unit on top of the pump
leaving off the seals
. Make certain the seat is shouldered up in the cage and the spring is correctly positioned
on the disc. Now, check the spring for correct pre-load which should be with 1/8" to 3/16" of spring extending
above top of cage. (See Figure 10, page 52.)
2. Check cylinder bores for nicks, scratches, cuts or washed areas with flashlight. Fluid end should be reworked if
these are too deep for seal to work effectively.
3. Place new seal in cylinder bore and push to bottom with hook. Gently tamp the seal into the bottom of the bore.
(See Figure 11, page 52).
4. Using handle of seat driver as a guide, drop a suction seat on top of gasket. The handle will prevent the seat
from turning over when dropped.
NOTE:
Suction seat has a larger bore (I.D.) than the discharge seat.
5. Insert seat driver in suction seat, and using a hammer, tap the seat into seal until it is solid with bottom of bore.
(Check seat, be certain top side is up). (See Figure 12, page 52).
6. Place Valve disc on magnet with spring in position on top of valve disc, and lower into place on top of seat.
Leave magnet standing in bore.
NOTE:
Valve discs are interchangeable between suction and discharge seats. (See Figure 13, page 52).
7. Insert cage in bore, using handle of seat driver, tap cage gently to the bottom.
NOTE:
The cages fit the bores very closely. Use care when inserting the cage to be sure it is not cocked.
Work the cage gently - it will slide into the bore when correctly aligned.
Lift the valve disc with the magnet to make certain it is not caught under the cage, and using a hammer, gently
drive the cage down until solid. (See Figure 14, page 52).
8. Check disc spring to see that they are free in the cage. Pull magnet loose. (Figure 15, page 52).
9. Using a flashlight, check the spring for correct positioning on valve disc and for proper pre-load. Check valve
disc to be certain top side is up. (See Figure 15, page 52).
10. Place seal in cylinder bore and push to top of suction cage with hook. Gently tamp seal into position.
11. Drop discharge seat using handle as described in No. 4.
12. Drive seat solid on top of cage. In some cases, the pre-load from the suction spring will push the seat up after it
is driven - this is normal.
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Plunger Pump Valves…
II. CAGE TYPE VALVES
E. ASSEMBLY PROCEDURES
(Continued)…
13. Place valve on magnet with spring in position and lower into place on top of seat. Leave magnet standing in the
bore.
14. Insert cage and drive using the same procedure as No. 7.
15. Inspect using same procedure as No. 7.
16. Check valve assembly with flashlight using same procedure as No. 8.
17. Place seal on retainer and install in cylinder. Screw threaded cover down by hand until threads are fully
engaged. Torque center bolts to following values:
PLUNGER PUMP SIZE
TORQUE (Dry) TORQUE (Lubricated)
30T-2H, 30T-2L, 60T-3H, 60T-3M, 80T-3H, 80T-3M 500 ft-lbs 400 ft-lbs
100T-4H, 100T-4M, 130T-4H, 130T-4M, 165T-5M,
300Q-5HA, 200T-5H, 250T-5H
550 ft-lbs 450 ft-lbs
165T-5M, 300Q-5M, 200T-5M, 250T-5M 650 ft-lbs 525 ft-lbs
165T-5H, 200T-5H, 250T-5H, 300Q-5HB 900 ft-lbs 735 ft-lbs
375T-7H 1300 ft-lbs 1060 ft-lbs
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Plunger Pump Valves…
II. CAGE TYPE VALVES
E. ASSEMBLY PROCEDURES
(Continued)…
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Plunger Pump Valves (Continued)…
III. TAPERED SEAT VALVES
A. SPHERICAL VALVES and SEATS
1. VALVE REMOVAL PROCEDURE
a. Both suction and discharge valves are removed from the top of the cylinder. It is necessary to pull the
discharge valve prior to pulling the suction valve.
b. Remove the spring retainer by pressing downward on the puller head and turn counter clockwise about 1/8
of a turn or until retainer stops. Remove the retainer with the retriever. See Figure 17.
c. Remove spring(s) and valve with the retriever. See Figure 18.
d. Remove seat by placing the puller head through the seat opening and engage lugs to the underside of the
seat. Pull seat or bump seat loose and remove. See Figure 19.
2. INSTALLATION PROCEDURE
a. Make certain cylinder tapers are clean and dry. Inspect for corrosion or damaged areas. Repair or replace
as required.
b. Clean and dry spherical seat tapers and with retainer and spring(s) removed, place seat in place making
certain it is straight.
c. With a bar and a driver tap seat in place with 2 or 3 strokes. NOTE!!
Seat does not have to be completely
seated. Pump start-up pressure will drive seat home. See Figure 20.
d. Install valve, spring(s), and spring retainer. See Figure 21.
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Plunger Pump Valves…
III. TAPERED SEAT VALVES
A. SPHERICAL VALVES and SEATS (Continued)…
VALVE COMPLETE, Consists of:
ITEMS INCLUDED 2-1/2" 3" 3-1/2" 4" 5”
SUCTION 1792520-25 1793020-25 1793520-25 1794020-25 1795020-25
VALVE COMPLETE
DISCHARGE 1792522-25 1793022-25 1793522-25 1794022-25 1795022-25
SUCTION 1792521-25 1793021-25 1793521-25 1794021-25 1795021-25
SEAT
DISCHARGE 1792523-25 1793023-25 1793523-25 1794023-25 1795023-25
VALVE (ONLY) 1792527-25 1793027-25 1793527-25 1794027-25 1795027-25
SPRING (SUCTION) 1792525 1793025 1793525 1794025 1795025
RETAINER 1792524-6 1793024-6 1793524-6 1794024-6 1795024-6
INNER 1792526 1793026 1793526 1794026 NONE
SPRING (DISC)
OUTER 1792525 1793025 1793525 1794025 1795025
PULLER KIT, Consists of:
ITEMS INCLUDED 2-1/2" 3" 3-1/2" 4" 5”
PULLER KIT 180104119 180104127 180104135 180104143 180104151
PULLER HEAD 181205709 181259300 181259359 181259409 181259410
RETRIEVER 1790034
SPACER 181205709 181205710
WASHER 20-220-194 20-220-327
NUT 75-518-308 75-510-330
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Plunger Pump Valves…
III. TAPERED SEAT VALVES
A. SPHERICAL VALVES AND SEATS
(Continued)…
Figure 16 Figure 17 Figure 18 Figure 19
Figure 20 Figure 21
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Plunger Pump Valves (Continued)…
III. TAPERED SEAT VALVES
B. TAPERED SEAT-BOTTOM GUIDED VALVES
1. VALVE REMOVAL PROCEDURE
a. Using hex head wrench as shown in Figure 23, remove retainer and spring. Bottom guided valves can be
removed with a magnet or special valve retriever.
b. Screw puller head on valve seat until tightly shouldered. Valve seat can be pulled or bumped as shown in
Figure 24.
2. INSTALLATION PROCEDURE
a. Make certain fluid end tapers are clean and dry. Inspect for corrosion or damaged areas to see if repair is
required.
b. Clean and dry valve seats tapers and with retainer and spring removed, place seat in place making sure it is
straight.
c. With bottom guided valve in place, drive the seat, as shown in Figure 25, until it stops driving.
d. Check bottom-guided valve to be sure it is free in the seat and install spring and retainer. Torque retainer to
values shown below using hex head wrench as shown in Figure 26.
TORQUE
ft.-lbs.
2-1/2" 3" 3-1/2" 4"
100 100 100 100
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Plunger Pump Valves…
III. TAPERED SEAT VALVES
B. TAPERED SEAT-BOTTOM GUIDED VALVES
(Continued)...
VALVE COMPLETE, Consists of:
ITEMS INCLUDED 2-1/2" 3" 3-1/2" 4"
VALVE (Complete) .....
Suction 1792500-4 1793000-4 1793500-4 1794000-4
Discharge 1792502-4 1793002-4 1793502-4 1794002-4
SEAT...........................
Suction 1792501-4 1793001-4 1793501-4 1794001-4
Discharge 1792503-4 1793003-4 1793503-4 1794003-4
VALVE (Only)................................................ 1790066 1713502 1790067 1790068
SPRING ........................................................ 1792505 1793005 1793505 1794005
RETAINER.................................................... 1792504-26 1793004-26 1793504-26 1794004-26
PULLER KIT, Consists of:
ITEMS INCLUDED 2-1/2" 3" 3-1/2" 4"
PULLER KIT 1792507 1793007 1793507 1794007
PULLER HEAD 1792506 1793006 1793506 1794006
BUMPER 1790080
BAR 1790081
WRENCH 1790082
RETRIEVER 1790034
SUPPORT 1713109
NUT 6300160
FLANGED NUT 6314002
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Plunger Pump Valves…
III. TAPERED SEAT VALVES
B. TAPERED SEAT-BOTTOM GUIDED VALVES (Continued)...
REMOVAL
Figure 22 Figure 23 Figure 24
INSTALLATION
Figure 25 Figure 26 Figure 27
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Gear Reducer…
I. LUBRICATION AND MAINTENANCE
A. GENERAL
NATIONAL OILWELL VARCO plunger pump gear reducers are "splash" lubricated. The rotation of the gears
provides adequate lubrication to all working parts. The gear reducer housing and the plunger pump power end are
separated by a labyrinth oil seal on the 30T, and a labyrinth oil seal retainer on the 60T, 80T, 100T, 130T, 165T, 200T,
250T and 300Q. These seals separate the lubricating oils and prevent contamination.
Initial filling should be through the hand hole cover and can be gauged by the high and low level oil plugs in the
housing. Correct level is at the bottom of the high level plug.
1. OIL
Use an extreme pressure gear oil. The following chart shows the recommended grades for various
temperatures surrounding the pump.
U.S. UNITS OF MEASURE
Temperature AGMA Industrial EP Gear Oil
+50°F to +155°F AGMA No. 6 EP or ASTM/ISO Grade No.320 (Viscosity 1335 to 1632 SSU at 100°F)
+20°F to +100°F AGMA No. 5 EP or ASTM/ISO Grade No.220 (Viscosity 918 to 1122 SSU at 100°F)
+20°F to +60°F AGMA No. 2 EP or ASTM/ISO Grade No.68 (Viscosity 284 to 347 SSU at 100°F)
METRIC UNITS OF MEASURE
Temperature AGMA Industrial EP Gear Oil
+10°C to +68°C AGMA No. 6 EP or ASTM/ISO Grade No.320 (Viscosity 288 to 352 cSt at 37.8°C)
-7°C to +38°C AGMA No. 5 EP or ASTM/ISO Grade No.220 (Viscosity 198 to 242 cSt at 37.8°F)
-29°C to +16°C AGMA No. 2 EP or ASTM/ISO Grade No.68 (Viscosity 61 to 75 cSt at 37.8°F)
Oil must pour freely at a minimum operating temperature. Change oil every six months or as frequently as
operating conditions require to maintain a clean, sludge-free oil of proper viscosity.
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Gear Reducer…
I. LUBRICATION AND MAINTENANCE
A. GENERAL
1. OIL (Continued)…
GEAR REDUCER OIL CAPACITY
Pump Ratio Gal. Ltr.
30T 3.50, 3.83, 4.20 2/3 2.5
60T, 80T 2.34, 2.77, 3.035, 3.50 1 3.8
100T, 130T 2.60, 3.15, 3.42, 3.89, 4.269 3 11.4
165T
2.80
3.22, 3.46
3.73
4.00, 4.38, 4.78, 4.96, 5.74
3-1/2
3
2-3/4
2-1/4
13.3
11.4
10.4
8.5
200T
250T
300Q
2.27
2.89
3.25, 3.36, 3.69
4.38, 4.84, 5.63
6-1/2
5
4-1/2
3-1/2
24.6
18.9
17.1
13.3
2. MAINTENANCE
a. The gear reducer housing is equipped with a magnetic drain plug that will collect any steel particles and
prevent them from being recirculated with oil. This plug should be cleaned every six months.
b. The gear reducer should be drained, flushed and refilled every six months or as often as required to
maintain clean, sludge-free oil of the proper viscosity.
c. Clean air breather with a non-explosive solvent.
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Gear Reducer (Continued)…
II. OVERHAUL AND REPAIR
A. GENERAL
The bearings and other working parts in the plunger pump gear reducers have been designed for continuous duty
service; and if proper maintenance is given, will provide years of trouble-free service. If overhaul and repairs are
necessary, disassembly and assembly procedures are discussed below.
1. DISASSEMBLY
a. Remove housing cover bolts, and using threaded jackscrew holes, pull the cover and tapered dowel pins.
b. Remove pinion shaft and Timken bearings from housing.
c. Remove blind cover plate.
d. Tap out Timken outer cup and mark all parts for correct replacement position.
e. Pull crankshaft gear. Gear is a .001" to .005" shrink fit to shaft. Puller holes are provided in gear for pulling.
(30T - 5/8" holes; 165T and 300Q - 1" holes). Heat should be used when pulling gears, but a combination of
dry heat and dry ice can also be used. The puller should be attached to the gear and a heavy strain should
be applied. The gear should be heated with a large tip torch starting at the outside gear rim below the root
of the teeth, and working in a circular motion, heat the gear slowly and evenly toward the hub. The torch
should be kept in constant motion to prevent hot spots. The gear rim should always be kept at a
temperature above the hub area to eliminate tensile stresses in the gear rim, which causes the gear to
crack. The gear will break loose from the shaft when enough heat has been applied. The puller should then
be able to remove the gear. Do not exceed 350°F at any time on the surface of the gear. Use a tempil stick
to gauge the temperature.
f. A gear removed in this manner will be a serviceable gear.
! ATTENTION !
EXCESS HEAT OR SPOT HEATING WILL CAUSE THE GEAR TO CRACK OR DISTORT.
ALLOW GEAR TO COOL SLOWLY.
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Gear Reducer…
II. OVERHAUL AND REPAIR
A. GENERAL
(Continued)…
2. ASSEMBLY
NOTE: Items 1 through 4 may be omitted if the pump is equipped with a new style main bearing
cage; 100T & 130T - Part Number 1711617. Omit items 1 through 4 for all 30T, 60T,
80T, 165T, 200T, 250T and 300Q.
a. Remove crankshaft assembly and left hand main bearing and cage assembly as per pump service manual.
b. Install a new cage and bearing per assembly instructions in pump service manual.
c. Install new bearing retainer (100T & 130T - Part number 1711622) and gasket onto cage. Check clearance
of Labyrinth seal to shaft. There should not
be any metal-to-metal contact.
d. Install crankshaft assembly per instructions in pump service manual.
e. 60T & 80T only - replace left hand bearing retainer, Part Number 1710011, with new bearing retainer, Part
Number 1710618, and re-shim crankshaft as per instructions in service manual. This retainer contains
labyrinth oil seals, but some older models use two (2) YS-3254 seals with the lips pointed in opposite
directions.
f. All other pumps contain labyrinth seal type retainers. No oil seals are necessary. Be sure seal grooves are
clean before installing retainer.
g. Apply liquid gasket to bearing cage and install gear reducer housing over pilot on bearing cage. Insert
special capscrews and tighten securely.
h. Drill and ream for dowel pins - two (2) holes. Dowel pins are standard .25" per foot taper pins and are listed
in the parts list section for each pump.
! ATTENTION !
DO NOT DRILL THROUGH PUMP FRAME. HOLES SHOULD BE REAMED DEEP ENOUGH TO ALLOW PINS
TO BE DRIVEN UNTIL THE TOP OF THE TAPER ON PIN IS FROM FLUSH TO 1/8" STAND-OFF.
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Gear Reducer…
II. OVERHAUL AND REPAIR
A. GENERAL
2. ASSEMBLY (Continued)…
i. After taper pins are fitted and driven, re-check tightness of special capscrews by torquing to following values
and wire them in place.
PUMP
SIZE
SPECIAL
CAPSCREW
TORQUE
(Ft. – lbs.)
30T 2402010 75
60T, 80T 2402850 150
100T, 130T 2405029 75
165T 2403190 150
200T, 250T, 300Q 2405018 375
j. Check high-speed pinion for nicks and burrs in bearing areas and remove same.
k. Heat pinion tapered roller assemblies in electric oven or bath to 300° F and install on pinion shaft. Make
sure bearings are shouldered on shaft.
l. Install outer race of tapered roller assemblies in housing and cover.
m. With half the shims on the blind retainer, install and secure with screws.
n. Check crankshaft extension, keyway crankshaft gear and key nicks and burrs - remove same.
o. Heat the crankshaft gear to 350° F in an oil bath or furnace to insure even and uniform heating. If these
methods are not available, heat the gear with a large top torch as described in paragraph 1. e., page 61. It
is of prime importance that the gear be heated slowly and evenly from the gear rim to the hub. Use a tempil
stick and micrometers to assure a correct fit. Allow gear to cool slowly.
p. Slip gear on shaft with under cut area on hub facing toward pump; puller holes facing out. Position gear on
shaft so that distance from end of shaft to outside face of hub is as follows:
PUMP END OF SHAFT TO HUB FACE
30T 1-3/4”
60T, 80T 2-5/15”
100T, 130T 4-1/4”
165T 4-3/8”
200T, 250T, 300Q 6-1/2”
q. Insert key with beveled side next to shaft and allow to cool in place.
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Gear Reducer…
II. OVERHAUL AND REPAIR
A. GENERAL
2. ASSEMBLY (Continued)…
! IMPORTANT !
• MAKE SURE GEAR IS HOT ENOUGH AND INSTALLATION IS PERFORMED QUICKLY ON THE SHAFT
BEFORE IT IS POSITIONED.
• MAKE SURE KEYWAYS ARE ALIGNED WHEN SHRINKING GEAR ONTO SHAFT.
r. Position high-speed pinion in housing supporting same with rope or cloth through the hand hole in top of
housing.
s. Apply liquid gasket between cover and housing. Install the housing cover and secure with capscrews and
taper pins.
t. Place remaining shims on open retainer and install with screws, making certain the drain slot is at the
bottom. Adjust with shims and retainers until the endplay of the pinion shaft is from .003" to .005" loose on
all reducers except 200T and 300Q where the end play is from .005" to .007" loose. Check clearance of
Labyrinth seal to shaft. There should not
be any metal-to metal contact.
! IMPORTANT !
• MAKE CERTAIN THE BEARING OUTER CUPS ARE SOLID AGAINST THE RETAINERS AND THE OUTSIDE
RETAINER IS INSTALLED CORRECTLY.
u. Check meshing of pinion and crankshaft gear.
v. Install pinion shaft dirt excluder.
3. INSTALLATION
Since the plunger pump gear reducer is attached to the pump and becomes a part of the pump package, the
installation should receive the same careful consideration that the pump itself does. Careful installation
practices will greatly increase trouble-free operation and reduce maintenance costs. For general installation
recommendations, see Installation Section of the pump manual.
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P-55U Pump…
A. OPERATING INSTRUCTIONS
1. BOX SUCTION PUMPS (VACUUM FEED)
• Fill reservoir with oil.
• Loosen union nut on pump outlet.
• Remove the vent screw and fill the sight glass with oil.
Prime by manually pumping flushing unit until air free oil
is observed from the drip tube and oil level drops in the
sight glass.
• Replace vent screw and tighten union nut.
• Maintain oil level in sight glass below the drip tube so
drops can be observed.
2. FLOW RATE ADJUSTMENT
• Loosen locknut on flushing unit.
• Turn flushing unit counter-clockwise to increase flow.
• Turn flushing unit clockwise to decrease flow.
• Tighten locknut when desired flow rate is achieved.
3. SIGHT GLASS
In a vacuum type sight feed, it is not uncommon for
oil level in the sight glass to drop during operation.
Absence of a level indicates air is being taken in with the
oil. Some oils, due to viscosity conditions, will release air
faster than others. When the quality of air becomes
excessive, it can eventually air lock the pump.
For this reason it is recommended that an oil level in
the sight glass be maintained.
When level drops, remove the vent screw and fill
sight glass to top; replace vent screw and operate
flushing unit manually, observing that an oil in the sight
glass is free from air. If air is not expelled, it may be
necessary to loosen union nut (on pump outlet) and expel
air at this point. It is desirable to maintain level below the
drip tube so drops can be seen during operation.
4. OVERFILLING OF SIGHT GLASS
In a vacuum type sight feed, it is not uncommon to
see a reverse action whereas sight glass fills with oil and
the drops cannot be observed. Overfilling is caused by
oil absorbing air in the sight glass and normally does not
affect the operation of the pump. Remove the vent screw
from sight glass and allow level to drop below drip tube.
Tighten vent screw and check to see that air free oil from
drip tube can be observed in the sight glass. If overfilling
continues, it may be caused by plunger wear and oil
slippage is being drawn back to sight glass. If this is the
problem, the feed setting in drops per stroke will then
automatically be reduced by the amount of slippage.
5. RESERVOIR OIL LEVEL (LOSS OF PRIME)
If reservoir runs low on oil (at a point below the
suction inlet of the pump) it may be necessary to prime
individual pumps after filling, using procedure listed
above.
6. PUMP DISPLACEMENT
Maximum output (per stroke):
1/4 Plunger = .018 Cubic Inches
3/8 Plunger = .038 Cubic Inches
The cubic volume for a pint of oil is 28.9 cubic inches
and average drop size is .002 cubic inches.
Vent Screw
Pump Outlet, 1/8” NPT
Union Nut
Sight Glass
Flushing Unit
Lock Nut
Suction Inlet
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Storage of Pumps…
I. GENERAL
All machinery units require protection from corrosion erosion, natural attrition which causes deterioration of the
surface as well as the working parts. Generally, units in operation are frequently inspected, cleaned, painted and
lubricated while idle units are often more or less neglected. Any degree of neglect is costly, especially if continued over
a sufficient period of time to make restoration of the equipment impossible. It is recommended that preventive measures
of protection be established and the following will guide you in the minimum requirement.
A. GENERAL
Preferably, units should be stored in clean, climatically controlled buildings. This would require the minimum
inspection, but, since storage in older environments is sometimes necessary, more frequent inspections and additional
protection is necessary. The schedule for inspection and protection can be determined only at the point of storage. A
protection and storage log is recommended. Tropical areas require the maximum protection; arid regions require the
least amount of protection. The frequency of inspection is determined after noting the rate of deterioration. Take
positive action immediately when corrosion/erosion appears, do not wait until large areas are covered because usually
the larger the area, the deeper the penetration.
B. RECOMMENDED PROTECTION INITIAL STORAGE
1. Drain all oil and thoroughly clean inside of Power Frame.
2. Coat pinion shaft oil seals with grease.
3. Remove breathers for later installation on pump. Seal all breather holes with greased solid pipe plugs. Remove
extension rods and diaphragm sealing housing; be sure to protect the rods and housings, storing them
separately for later installation on the pump. Seal diaphragms with wooden covers. “Mate” the wood cover and
diaphragm faces together, thoroughly coating with Rust Veto 342 or its equivalent.
4. Spray two gallons of Shell VSI 100 vapor phase inhibitor or equivalent into power end of pump.
5. Remove valves and valve springs. Clean and wrap in corrosion inhibiting paper. Remove liners and pistons.
Clean and wrap in corrosion inhibiting paper. Clean and dry fluid end bores and thoroughly coat all internal
surfaces with Tectyl 506 or equivalent.
6. Thoroughly coat all threads and end of valve cover and screw into fluid end.
7. Protect all external machine surfaces using Rust Veto 342 or equivalent including pump pads.
8. Inspect complete pump and record all details on the Protection and Storage Log.
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Storage of Pumps…
I. GENERAL
(Continued)…
C. SIX MONTH SERVICING
1. Rotate pump.
2. Renew internal rust inhibitors to specifications and quantities previously stated under the “Initial Storage”
section.
3. Before replacing top and side covers, inspect for any internal corrosion.
4. Inspect for soundness of external protection, i.e., rust preventative and paint. Renew as necessary.
5. Enter and record all details on the “Protection and Storage Log”.
D. PRE-INSTALLATION CHECK AFTER STORAGE
1. Repeat six month servicing procedure as stated above.
2. Ensure all necessary parts are complete and in a satisfactory condition for installation on pump.
3. Enter all records and close out the “Protection and Storage Log”.
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Owners Record…
NAME _______________________________________________________________________________________
LOCATION ___________________________________________________________________________________
DATE OF DELIVERY ________________________________ DATE PLACED IN OPERATION _______________
PUMP MODEL ________________________________________________________________________________
PUMP SIZE________________________________________ SERIAL NO._______________________________
PRIME MOVER_____________________________________ SERIAL NO._______________________________
GEAR UNIT________________________________________ SERIAL NO._______________________________
DRIVE:
DRIVE SHEAVE P.D._____________ DRIVEN SHEAVE P.D.________________ NO. OF GROOVES ________
BELT LENGTH _________________ DRIVE SPROCKET __________________ CHAIN SIZE ______________
CHAIN LENGTH ________________ COUPLING (MAKE) __________________ COUPLING SIZE __________
PRESSURE ___________ VOLUME ________________ PUMP SPEED ___________ DRIVE SPEED _________
PLUNGERS __________________________________________________________________________________
PACKING ____________________________________________________________________________________
PISTONS ____________________________________________________________________________________
LINERS ______________________________________________________________________________________
VALVES _____________________________________________________________________________________
SEATS ______________________________________________________________________________________
LUBRICANTS:
CRANK CASE _______________________________________________________________________________
FLUSHING SYSTEM __________________________________________________________________________
GEAR UNIT _________________________________________________________________________________
LUBRICATOR _______________________________________________________________________________
PRIME MOVER ______________________________________________________________________________
COUPLING _________________________________________________________________________________
NOTES ______________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
All of the above entries are not applicable to a specific unit; therefore, completion of this form must be confined within
the limits of each pump and the specified optional accessory equipment.
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Typical Waterflood Pump Installation Suction and Discharge Piping
Arrangement…
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Viscosity Equivalents…
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With over 120 locations worldwide, National Oilwell Varco is located near you. To
find the nearest Distribution Service Center, machinery center or repair facility,
please give us a call at our main office listed below.
Or you can access our website at the URL listed below, where you may search
by location or country.
http://www.natoil.com/locations
Sales/Technical Information:
USA Tollfree: 1 (800) 324-4706
Internet: http://www.natoil.com
National Oilwell Varco is a leading
manufacturer of reciprocating plunger
pumps, Mission Fluid King centrifugal
pumps, and fluid end replacement parts. We
also offer a complete set of solutions to your
fluid transfer challenges. For more
Information, contact National Oilwell Varco
directly at the Headquarters in Houston,
Texas. All National Oilwell Varco products
are available throughout the U.S. and around
the world from service centers, authorized
distributors, and representatives.
© Copyright 1999 by National Oilwell, L.P. All
Rights
Reserved. NATIONAL OILWELL, NATIONAL, and
OILWELL are registered trademarks of NATIONAL
OILWELL, L.P. Houston, Texas, USA. All other
trademarks used are registered to their respective
companies. The information and data in this
brochure, including but not limited to pictures,
photographs, charts, diagrams, drawings, lists,
written comments, and specifications, are accurate
to the best of our knowledge and belief, but are
intended for general information only.
Applications suggested for the materials and other
information are described only to help readers
make their own evaluations and decisions, and are
neither guarantees nor are they to be construed as
express or implied warranties of suitability for these
or other applications. National Oilwell makes no
warranty, either express or implied, beyond that
stipulated in National Oilwell’s Standard Terms
and Conditions of Sale which are available upon
request.
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