Bench Test Procedure for Hydraulic Piston Pumps {3203} Caterpillar


Bench Test Procedure for Hydraulic Piston Pumps {3203}

Usage:

IT14G 1WN
Compact Wheel Loader
901C (S/N: W4T1-UP)
901C2 (S/N: YKY1-UP)
902 (S/N: 7ES1-UP)
902C (S/N: W5T1-UP)
902C2 (S/N: YKT1-UP)
903C (S/N: MW41-UP; W6T1-UP)
903C2 (S/N: MW81-UP; YKL1-UP)
903D (S/N: MZY1-UP)
904B (S/N: B4L1-UP)
904H (S/N: H4T1-UP)
906 (S/N: MER1-UP; 6ZS1-UP)
908 (S/N: TAR1-UP; 8BS1-UP)
914G (S/N: PDF1-UP; 7ZM1-UP; 9WM1-UP)
914G2 (S/N: KNP1-UP)
IT14G2 (S/N: ERP1-UP)
Integrated Toolcarrier
IT14G (S/N: FWL1-UP; 8ZM1-UP; KZN1-UP; 1WN1-UP)
Wheel Loader
910G (S/N: AKR1-UP)

Introduction

Table 1
Revision  Summary of Changes in REHS2217 
12  Updated effectivity. 
11  Added new Compact Wheel loader serial number prefix MW8 to document. 
Added part number 452-6227 Piston Pump Gp to document.
10  Added new Compact Wheel Loader serial number prefixes YKL, YKT, and YKY to document. 
09  Added new Compact Wheel Loader serial number prefixes MW4 to document. 
Added part numbers 397-1516 Piston Pump Gp, 452-6240 Piston Pump Gp, and 452-6242 Piston Pump Gp to document.
08  Added new Compact Wheel Loader serial number prefixes W4T, W5T, and W6T to document. 
Added part numbers 398-1472 Piston Pump Gp and 398-1473 Piston Pump Gp to document.

© 2018 Caterpillar All Rights Reserved. This guideline is for the use of Caterpillar Dealers only. Unauthorized use of this document or the proprietary processes therein without permission bay be violation of intellectual property law.

This Special Instruction includes test procedures for piston pumps. This Special Instruction also provides specifications. The technician should have a good understanding of hydraulic piston pumps. The technician should be educated in the operation of the hydraulic test bench. The test benches in this document are available through the Caterpillar Service Tool Division. Gather all necessary tooling before you need to hook up the pump. Some of the required tooling appears in a table at the end of this document. There are many possible variations of tooling that could be used. Not every possible variation can be listed.

For questions or additional information concerning this guideline, submit a feedback form in the Service Information System web site. In order to address an urgent need, use the following to relay your request to Caterpillar Repair Process Engineering:

  • Cat dealer Technical Communicator

  • Dealer Solution Network

  • Caterpillar Technical Representative

  • Knowledge Network (online)

Canceled Part Numbers and Replaced Part Numbers

This document does not include Canceled part numbers and replaced part numbers. Use NPR on SIS for information about Canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.

Safety



Illustration 1g02139237

------ WARNING! ------

Personal injury or death can result from improperly checking for a leak.

Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing serious injury, and possible death.

If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.


------ WARNING! ------

Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.


------ WARNING! ------

Pump test pressures in this guideline may exceed the normal operating range of the hydraulic test hoses utilized when connecting the tested pump to the test bench. However, the order of magnitude of these pressures is significantly below the burst strength of the Caterpillar "XT6" product.

High pressure oil can escape through improperly assembled hoses and fittings. High pressure oil can also escape through poorly maintained hoses and fittings. High pressure oil may also leak through hose that has become damaged over the life of the hose due to the pressure levels that occur during test bench operation.

Personal injury or death can result from improper hose & fitting inspection or improper hose replacement procedures. Escaping fluid under pressure can penetrate body tissue causing serious injury, and possible death.

Thoroughly inspect all testing hoses, fittings, and quick disconnects prior to any testing operation. Check the assembly date tag or hose assembly log date for a hose life indicator. Replace all Test Bench hoses at a minimum of every 2 years or earlier if the hose or fittings appear to be damaged.


Summary

This procedure is specific to the type of pump and the type of control. Refer to the test specifications and the tooling at the end of this document.

Note: A paper copy of this document may not be the latest version. Go to the Service Information System (SIS) in order to view the latest version.

References

Table 2
References 
Media Number  Title 
REHS1761  Required Tooling for Bench Testing Hydraulic Components 
SEBF8810  Hydraulic Pump, Motor, and Cylinder Bench Test Procedure Reference Manual 
SEHS8892  Operating Instructions for Caterpillar 1U-9400 Series Hydraulic Test Center 
NEHS0563  Tool Operating Manual for 9U-5000 Series Hydraulic Test Bench 

Connections for the Caterpillar Hydraulic Test Center



Illustration 2g01063311
Connections for the Test Center
(1) Flow control for discharge
(2) "F3" flow meter inlet
(3) "F4" flow meter inlet
(4) Oil supply from the auxiliary pump
(5) "F3" outlet for the flow meter with flow limiter
(6) Oil supply
(7) Load sensing pressure
(8) Signal pressure
(9) "F4" outlet for the flow meter
(10) Return to tank
(11) Connections for case drain
(12) Oil supply


Illustration 3g01063312
Control and Gauges for the Test Center
(13) Meter for speed and torque
(14) Gauge for signal pressure
(15) Control for signal pressure
(16) Pressure gauge for auxiliary pump
(17) Auxiliary pump flow
(18) "F3" discharge pressure gauge
(19) "F3" discharge flow
(20) "F4" discharge pressure gauge
(21) "F4" discharge flow
(22) Auxiliary pump flow control
(23) "F3" margin pressure
(24) "F3" Load control for discharge pressure
(25) "F4" Load control for discharge pressure

Connections for the Caterpillar Hydraulic Test Bench



Illustration 4g01063314
Connections for the Test Bench
(26) "Flow meter 1" loop and "Flow meter 2" loop
(27) Oil Supply


Illustration 5g01093468
Connections for the Test Bench
(28) "Flow meter 2" loop
(29) "Flow meter 1" loop
(30) "Flow meter 2" outlet
(31) Signal pressure line
(32) "Flow meter 2" inlet
(33a) "Flow meter 1" outlet
(33b) Auxiliary oil supply outlet
(34) Auxiliary oil supply inlet
(35) "Flow meter 1" inlet


Illustration 6g01063316
Control and Gauges for the Test Bench
(36) Auxiliary pump pressure
(37) Signal pressure
(38) Control for signal pressure
(39) "Flow meter 1" discharge pressure
(40) Control for auxiliary pump pressure
(41) "Flow meter 2" discharge pressure
(42) Auxiliary pump flow control
(43) "Flow meter 2" discharge flow
(44) Discharge flow for auxiliary pump
(45) "Flow meter 1" discharge flow
(46) "Flow meter 1" load control
(47) Speed and direction control
(48) "Flow meter 2" load control

Port Locations



Illustration 7g01218344
Typical Port Locations and pump adjustments
(49) Vent port for case
(50) Gauge ports for stroking pressure
(51) Case drain port
(52) Solenoid A "forward"
(53) Adjustment screw for high-pressure cut
(54) Inlet port for charge pump
(55) Discharge port
(56) Outlet port for charge pump
(57) Solenoid B "reverse"
(58) Adjustment screw for mechanical centering
(59) Gauge port for control pressure
(60) Electrical connector for solenoid
(61) Gauge ports for discharge pressure
(62) Gauge port for charge pressure
(63) Charge relief valve
(64) Suction port
(65) Discharge port


Illustration 8g01209416
Hydraulic Schematic
(49) Vent port for case
(50) Gauge ports for stroking pressure
(51) Case drain port
(52) Solenoid A "forward"
(53) Adjustment screw for high-pressure cut
(54) Inlet port for charge pump
(55) Discharge port
(56) Outlet port for charge pump
(57) Solenoid B "reverse"
(58) Adjustment screw for mechanical centering
(59) Gauge port for control pressure
(60) Electrical connector for solenoid
(61) Gauge ports for discharge pressure
(62) Gauge port for charge pressure
(63) Charge relief valve
(64) Suction port
(65) Discharge port

9U-5902 Rectifier Block



Illustration 9g01086019
9U-5902 Rectifier Block Connections


Illustration 10g01183843
9U-5902 Rectifier Block Schematic
(66) High-pressure port "from pump discharge"
(67) Outlet "to flow meter loop"
(68) High-pressure port "from pump discharge"
(69) Low-pressure return "from heat exchanger"

9U-5893 Heat Exchanger



Illustration 11g01086036
9U-5893 Heat Exchanger Connections
(70) Inlet (from flow meter loop)
(71) Outlet (to rectifier block)
(72) Coolant (water) input
(73) Coolant (water) output

Pump Setup

Note: A power supply is required to operate the solenoid. The power supply should be able to deliver 0 mA to 2.2 A with an infinite setting in that range.

  1. Install pressure taps in the following test ports:

    Refer to Illustration 7.

    (50a) Gauge port for stroking pressure

    (50b) Gauge port for stroking pressure

    (59) Gauge port for control pressure

    (61a) Gauge port for discharge pressure

    (61b) Gauge port for discharge pressure

    (62) Gauge port for charge pressure

  2. Connect pump discharge ports (55) and (65) to the 9U-5902 Rectifier Block high-pressure ports (66) and (68).

  3. Connect the 9U-5902 Rectifier Block outlet (67) to the flow meter inlet of the test bench.

  4. Connect the "flow meter outlet" to the 9U-5398 Heat Exchanger inlet (70).

  5. Connect the 9U-5398 Heat Exchanger outlet (71) to the low-pressure return (69) on the 9U-5902 Rectifier Block.

  6. Connect the "outlet port for charge pump" (56) to an in-line flow meter. Direct the oil from the flow meter to the "inlet port for charge pump" (54).

  7. Connect a 8T-0856 Pressure Gauge on gauge port for charge pressure (62).

  8. Connect electrical connector for solenoid (60) to power supply.

  9. Connect the suction port (64) to the test bench oil supply. Purge all air from the suction line. Loosen the suction hose at the pump until oil leaks from the connection. Tighten the suction hose.

  10. Fill the pump case with oil. Pour oil directly into a case drain port until the case is full. Connect a line from case drain port (51) to test bench reservoir.

Mechanical Zero Position for the Pump

  1. Vent both gauge ports for stroking pressure (50a) and (50b) to atmosphere. This will equalize the pressure on the servo spool. Install 8T-0857 Pressure Gauges on both gauge ports for discharge pressure (61a) and (61b). Start rotating the pump to 600 RPM. Turn the load control on the test bench completely "clockwise" for the pump discharge pressure. If the mechanical zero adjustment is incorrect, a discharge pressure higher than charge pressure may occur.

  2. Turn the adjustment screw for the mechanical centering (58) clockwise. Continue to turn until a pressure of 1380 kPa (200 psi) above charge pressure is achieved. This pressure will be seen on a gauge port for discharge pressure (61a) or (61b). Mark the position of the adjustment screw for mechanical centering (58).

  3. Turn adjustment screw for mechanical centering (58) counterclockwise. Continue to turn until a pressure of 1380 kPa (200 psi) above charge pressure is achieved on the other gauge port for discharge pressure (61a) or (61b). Mark the position of the adjustment screw for mechanical centering (58).

  4. A mark should be placed halfway between position one and position two. Turn the adjustment screw for the mechanical centering (58) to the midpoint of both marks. There should be less than a 34.5 kPa (5 psi) pressure differential between pump gauge ports (61a) and (61b).

  5. Turn the load control on the test bench for pump discharge pressure counterclockwise. Allow the discharge pressure of the pump to decrease. Stop rotating the pump and allow pump pressure to dissipate. Disconnect pressure gauges from ports (61a) and (61b). Plug gauge ports for stroking pressure (50a) and (50b).

Test Procedure

The ISO contamination rating of the hydraulic oil in the test bench should be at least 16/13. The oil in the test bench should be one of the following.

  • SAE 10W at 50 °C (122 °F) or

  • Mobil DTE-11 at 46 °C (115 °F)

  1. Start rotating the pump according to Step 1 of the test specifications. Listen for abnormal noise. Verify flow from the charge pump. Verify that all connections are tight. Check for leaks around shaft seals. Check for leaks around the control valves. Check the gauge port for charge pressure (62). Compare the charge pressure with the value in Step 1 of the test specifications. If the charge pressure is not within the test specifications, adjust the amount of shims at charge relief valve (63) accordingly. If charge relief valve (63) is equipped with an adjustment screw, turn screw to adjust pressure.

  2. Step 2 of the test procedure validates the operation of the speed sensing valve. This function is not adjustable and is a crucial component of the pump operation. Apply current to solenoid (52) or (57) according to the value in Step 2 of the test specifications. Slowly increase the input RPM until the discharge flow begins. The input RPM may be higher than Step 2 of the test specifications in order to achieve a discharge flow. Once the pump begins generating discharge flow, increase the discharge pressure to the value in Step 2 of the test specifications. Slowly decrease the input RPM. At the RPM value in Step 2 of the test specifications, pump discharge pressure will decrease to the charge relief valve setting.

  3. Slowly decrease the discharge pressure to the value in Step3 of the test specifications. Slowly increase the input RPM according to Step 3 of the test specifications. Compare the pump discharge flow to the value in Step 3 of the test specifications. Also compare the charge pump flow to the value in Step 3 of the test specifications. If either discharge flow is less than the value in Step 3 of the test specifications, the pump may not be mechanically feasible. Internally inspect the pump.

  4. Slowly increase the pump discharge pressure to the value in Step 4 of the test specifications. Measure pump leakage. Calculate the total loss. If the total loss is higher than the allowable value in Step 4 of the test specifications, The pump may not be mechanically feasible.

    Subtract the discharge flow in Step 4 from Step 3. The result is your total loss.

    Example Step 3 flow 162 L/min (42.8 US gpm) - Step 4 flow 158 L/min (41.7 US gpm) = total loss 4 L/min (1.1 US gpm). The maximum allowable loss is 7.2 L/min (1.9 US gpm).

    The pump in the example is acceptable because the actual total loss is less than the maximum allowable loss.

    ------ WARNING! ------

    Pump test pressures in this guideline may exceed the normal operating range of the hydraulic test hoses utilized when connecting the tested pump to the test bench. However, the order of magnitude of these pressures is significantly below the burst strength of the Caterpillar XT6 product.

    High pressure oil can escape through improperly assembled hoses and fittings. High pressure oil can also escape through poorly maintained hoses and fittings. High pressure oil may also leak through hose that has become damaged over the life of the hose due to the pressure levels that occur during test bench operation.

    Personal injury or death can result during adjustment of the high pressure relief valve if recommended hose maintenance practices are not followed. Escaping fluid under pressure can penetrate body tissue causing serious injury, and possible death.

    Adjustment of the high pressure cut or pressure override valve shall only be performed when the pump is operating at a zero discharge pressure condition. Continuation of the pump test procedure can be resumed when this high pressure adjustment is completed.


  5. Slowly increase the pump discharge pressure to the value in Step 5 of the test specifications. The pump should be fully destroked when the discharge pressure in Step 5 is reached. The discharge flow should decrease to zero when high-pressure cut is reached. If the high-pressure cut is not within the test specifications, adjust accordingly. Turn the adjustment screw for the high pressure cut (53) clockwise in order to increase the pressure. To decrease the pressure, turn the adjustment screw counterclockwise.

    Note: Repeat Steps 2 through 5 in order to test the other solenoid (52) or (57).

------ WARNING! ------

Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.


Test Specifications

Table 3
Part Number  111-0368 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.5  1.5  1.5  1.5 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  40000 (5800)  44400±500 (6440±75) 
Discharge Flow lpm (gpm)  79 (21)  140 (37)  134 (35.5) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  5.68 (1.5) or less 
Charge Pump Flow lpm (gpm)  11 (3)  21 (5.5)  38 (10)  38 (10)  38 (10) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 4
Part Number  111-0369 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.5  1.5  1.5  1.5 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  40000 (5800)  44000±500 (6380±75) 
Discharge Flow lpm (gpm)  91 (24)  163 (43)  156 (41) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  7.2 (1.9) or less 
Charge Pump Flow lpm (gpm)  11 (3)  21 (5.5)  38 (10)  38 (10)  38 (10) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 5
Part Number  111-0371 
Canceled replaced by 133-1333 

Table 6
Part Number  111-0377 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1200  1700  1700  1700 
Solenoid Current Amps  0.8  0.8  0.8  0.8 
Discharge Pressure kPa (psi)  3000 (435) (1)  750 (108)  3000 (435) (1)  20000 (2900)  43500±500 (6310±75) 
Discharge Flow lpm (gpm)  110 (29)  153 (40)  144 (38) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  7.2 (1.9) or less 
Charge Pump Flow lpm (gpm)  11 (3)  23 (6)  38 (8.5)  38 (10)  38 (10) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 7
Part Number  111-0379 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1200  1900  1900  1900 
Solenoid Current Amps  0.8  0.8  0.8  0.8 
Discharge Pressure kPa (psi)  3000 (435) (1)  750 (108)  3000 (435) (1)  20000 (2900)  43500±500 (6310±75) 
Discharge Flow lpm (gpm)  110 (29)  170 (45)  163 (43) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  7.2 (1.9) or less 
Charge Pump Flow lpm (gpm)  11 (3)  23 (6)  38 (10)  38 (10)  38 (10) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 8
Part Number  111-0384 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.5  1.5  1.5  1.5 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  20000 (2900)  44000±500 (6380±75) 
Discharge Flow lpm (gpm)  110 (29)  180 (47)  172 (45) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  7.2 (1.9) or less 
Charge Pump Flow lpm (gpm)  11 (3)  21 (5.5)  38 (10)  38 (10)  38 (10) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 9
Part Number  113-7362 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.6  1.6  1.6  1.6 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  40000 (5800)  43500±500 (6310±75) 
Discharge Flow lpm (gpm)  79 (21)  140 (37)  134 (35.5) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  5.68 (1.5) or less 
Charge Pump Flow lpm (gpm)  11 (3)  21 (5.5)  38 (10)  38 (10)  38 (10) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 10
Part Number  133-1333 
Canceled, replaced by 156-7205 

Table 11
Part Number  137-7738 
Canceled, replaced by 203-4138 

Table 12
Part Number  137-7739 
Canceled, replaced by 203-4139 

Table 13
Part Number  137-7740 
Canceled, replaced by 203-4140 

Table 14
Part Number  156-7205 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.2  1.2  1.2  1.2 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  20000 (2900)  43500±1000 (6240±150) 
Discharge Flow lpm (gpm)  98 (26)  180 (47.5)  172 (45) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  7.2 (1.9) or less 
Charge Pump Flow lpm (gpm)  11 (3)  21 (5.5)  38 (10)  38 (10)  38 (10) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 15
Part Number  163-3480 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  2.2  2.2  2.2  2.2 
Discharge Pressure kPa (psi)  2500 (360) (1)  5000 (725)  2500 (360) (1)  20000 (2900)  40500±500 (5875±75) 
Discharge Flow lpm (gpm)  79 (21)  142 (37.5)  136 (36) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  5.7 (1.5) or less 
Charge Pump Flow lpm (gpm)  10 (2.7)  19 (5)  34 (9)  34 (9)  34 (9) 
Charge Relief Valve kPa (psi)  2500 (360)  2500 (360)  2500 (360)  2500 (360)  2500 (360) 
(1) Discharge pressure equals charge pressure.

Table 16
Part Number  203-4138 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  2.2  2.2  2.2  2.2 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  20000 (2900)  45000±500 (6530±75) 
Discharge Flow lpm (gpm)  45 (12)  80 (21)  76.8 (20.3) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3.2 (0.8) or less 
Charge Pump Flow lpm (gpm)  5.2 (1.4)  9.5 (2.5)  17 (4.5)  17 (4.5)  17 (4.5) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 17
Part Number  203-4139 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2200  2200  2200 
Solenoid Current Amps  2.2  2.2  2.2  2.2 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  20000 (2900)  45000±500 (6530±75) 
Discharge Flow lpm (gpm)  61 (16)  123 (32.5)  118 (31) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  4.5 (1.2) or less 
Charge Pump Flow lpm (gpm)  11 (3)  21 (5.5)  42 (11)  42 (11)  42 (11) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 18
Part Number  203-4140 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  1750  1750  1750 
Solenoid Current Amps  2.2  2.2  2.2  2.2 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  20000 (2900)  43500±500 (6310±75) 
Discharge Flow lpm (gpm)  79 (21)  123 (32.5)  117 (31) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  5.7 (1.5) or less 
Charge Pump Flow lpm (gpm)  11 (3)  21 (5.5)  34 (9)  34 (9)  34 (9) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 19
Part Number  231-0470 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1175  2000  2000  2000 
Solenoid Current Amps  2.2  2.2  2.2  2.2 
Discharge Pressure kPa (psi)  3000 (435) (1)  5000 (725)  3000 (435) (1)  20000 (2900)  45000±500 (6530±75) 
Discharge Flow lpm (gpm)  83 (22)  142 (37.5)  136 (36) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  5.7 (1.5) or less 
Charge Pump Flow lpm (gpm)  11 (3)  22 (5.8)  38 (10)  38 (10)  38 (10) 
Charge Relief Valve kPa (psi)  3000 (435)  3000 (435)  3000 (435)  3000 (435)  3000 (435) 
(1) Discharge pressure equals charge pressure.

Table 20
Part Number  240-2042 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.4  1.4  1.4  1.4 
Discharge Pressure kPa (psi)  3200 (464) (1)  5000 (725)  3200 (464) (1)  20000 (2900)  40000 (5800) 
Discharge Flow lpm (gpm)  45 (12)  80 (21)  76.8 (20.3) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3.2 (0.8) or less 
Charge Pump Flow lpm (gpm)  5.2 (1.4)  9.5 (2.5)  17 (4.5)  17 (4.5)  17 (4.5) 
Charge Relief Valve kPa (psi)  3200 (464)  3200 (464)  3200 (464)  3200 (464)  3200 (464) 
(1) Discharge pressure equals charge pressure.

Table 21
Part Number  397-1516 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.4  1.4  1.4  1.4 
Discharge Pressure kPa (psi)  2500 (360) (1)  5000 (725)  2500 (360)  20000 (2900)  40000 (5800) 
Discharge Flow lpm (gpm)  30 (8)  56 (14.7)  53 (14) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3 (0.7) 
Charge Pump Flow lpm (gpm)  4 (1)  7 (2)  13 (3.5)  13 (3.5)  13 (3.5) 
Charge Relief Valve kPa (psi)  2500 (360)  2500 (360)  2500 (360)  2500 (360)  2500 (360) 
(1) Discharge pressure equals charge pressure.

Table 22
Part Number  398-1472 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.4  1.4  1.4  1.4 
Discharge Pressure kPa (psi)  2500 (360) (1)  5000 (725)  2500 (360)  20000 (2900)  40000 (5800) 
Discharge Flow lpm (gpm)  30 (8)  56 (14.7)  53 (14) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3 (0.7) 
Charge Pump Flow lpm (gpm)  4 (1)  7 (2)  13 (3.5)  13 (3.5)  13 (3.5) 
Charge Relief Valve kPa (psi)  2500 (360)  2500 (360)  2500 (360)  2500 (360)  2500 (360) 
(1) Discharge pressure equals charge pressure.

Table 23
Part Number  398-1473 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.4  1.4  1.4  1.4 
Discharge Pressure kPa (psi)  2500 (360) (1)  5000 (725)  2500 (360)  20000 (2900)  40000 (5800) 
Discharge Flow lpm (gpm)  30 (8)  56 (14.7)  53 (14) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3 (0.7) 
Charge Pump Flow lpm (gpm)  4 (1)  7 (2)  13 (3.5)  13 (3.5)  13 (3.5) 
Charge Relief Valve kPa (psi)  2500 (360)  2500 (360)  2500 (360)  2500 (360)  2500 (360) 
(1) Discharge pressure equals charge pressure.

Table 24
Part Number  452-6227 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.4  1.4  1.4  1.4 
Discharge Pressure kPa (psi)  2500 (360) (1)  5000 (725)  2500 (360)  20000 (2900)  40000 (5800) 
Discharge Flow lpm (gpm)  30 (8)  56 (14.7)  53 (14) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3 (0.7) 
Charge Pump Flow lpm (gpm)  4 (1)  7 (2)  13 (3.5)  13 (3.5)  13 (3.5) 
Charge Relief Valve kPa (psi)  2500 (360)  2500 (360)  2500 (360)  2500 (360)  2500 (360) 
(1) Discharge pressure equals charge pressure.

Table 25
Part Number  452-6240 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.4  1.4  1.4  1.4 
Discharge Pressure kPa (psi)  2500 (360) (1)  5000 (725)  2500 (360)  20000 (2900)  40000 (5800) 
Discharge Flow lpm (gpm)  30 (8)  56 (14.7)  53 (14) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3 (0.7) 
Charge Pump Flow lpm (gpm)  4 (1)  7 (2)  13 (3.5)  13 (3.5)  13 (3.5) 
Charge Relief Valve kPa (psi)  2500 (360)  2500 (360)  2500 (360)  2500 (360)  2500 (360) 
(1) Discharge pressure equals charge pressure.

Table 26
Part Number  452-6242 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.4  1.4  1.4  1.4 
Discharge Pressure kPa (psi)  2500 (360) (1)  5000 (725)  2500 (360)  20000 (2900)  40000 (5800) 
Discharge Flow lpm (gpm)  30 (8)  56 (14.7)  53 (14) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3 (0.7) 
Charge Pump Flow lpm (gpm)  4 (1)  7 (2)  13 (3.5)  13 (3.5)  13 (3.5) 
Charge Relief Valve kPa (psi)  2500 (360)  2500 (360)  2500 (360)  2500 (360)  2500 (360) 
(1) Discharge pressure equals charge pressure.

Table 27
Part Number  528-9293 
Pump Rotation  Clockwise 
Step  1  2  3  4  5 
RPM  600  1100  2000  2000  2000 
Solenoid Current Amps  1.4  1.4  1.4  1.4 
Discharge Pressure kPa (psi)  2500 (360) (1)  5000 (725)  2500 (360)  20000 (2900)  44000 (6380) 
Discharge Flow lpm (gpm)  30 (8)  56 (14.7)  53 (14) 
Pump Loss lpm (gpm)  Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. The result is the Total Loss.  3 (0.7) 
Charge Pump Flow lpm (gpm)  4 (1)  7 (2)  13 (3.5)  13 (3.5)  13 (3.5) 
Charge Relief Valve kPa (psi)  2500 (360)  2500 (360)  2500 (360)  2500 (360)  2500 (360) 
(1) Discharge pressure equals charge pressure.

Test Bench Tooling

Table 28
Tooling 
Part Number  Mounting Flange  Drive Adapter  Suction Port  Split Flange  Flange Adapter  Case Drain  Stroking Pressure Ports  Charge Pressure Port  High Pressure Port 
111-0368  1U-9128  133-2329  1 1/4 STOR  1P-5766  9U-7439  1 1/16 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
111-0369  1U-9129  1U-9835  1 1/4 STOR  1P-5766  9U-7439  1 1/16 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
111-0371  1U-9129  1U-9835  1 5/8 STOR  1P-5766  9U-7439  1 1/16 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
111-0377  1U-9129  1U-9835  1 1/4 STOR  1P-5766  9U-7439  1 1/16 STOR  9/16 STOR  3/4 STOR  7/16 STOR 
111-0379  1U-9129  1U-9835  1 1/4 STOR  1P-5766  9U-7439  1 1/16 STOR  9/16 STOR  3/4 STOR  7/16 STOR 
111-0384  1U-9129  1U-9835  1 1/4 STOR  1P-5766  9U-7439  1 1/16 STOR  9/16 STOR  3/4 STOR  7/16 STOR 
113-7362  1U-9129  1U-9835  1 1/4 STOR  1P-5766  9U-7439  1 1/16 STOR  9/16 STOR  3/4 STOR  7/16 STOR 
133-1333  1U-9129  1U-9835  1 5/8 STOR  1P-5766  9U-7439  1 1/16 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
137-7738  1U-9128  1U-9834  1 1/4 STOR  1P-5765  9U-7438  7/8 STOR  7/16 STOR  9/16 STOR  7/16 STOR 
137-7739  1U-9128  1U-9834  1 1/4 STOR  1P-5765  9U-7438  1 1/16 STOR  9/16 STOR  9/16 STOR  7/16 STOR 
137-7740  1U-9128  1U-9834  1 1/4 STOR  1P-5765  9U-7438  1 1/16 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
156-7205  1U-9129  1U-9835  1 5/8 STOR  1P-5766  9U-7439  1 1/16 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
163-3480  1U-9128  1U-9834  1 5/8 STOR  1P-5766  9U-7439  1 1/16 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
203-4138  1U-9128  1U-9834  1 5/16 STOR  1P-5765  9U-7438  7/8 STOR  7/16 STOR  7/16 STOR  7/16 STOR 
203-4139  1U-9128  1U-9834  1 5/16 STOR  1P-5766  9U-7439  1 1/16 STOR  7/16 STOR  9/16 STOR  7/16 STOR 
203-4140  1U-9128  1U-9834  1 5/16 STOR  1P-5766  9U-7439  1 1/16 STOR  9/16 STOR  9/16 STOR  7/16 STOR 
231-0470  1U-9128  1U-9834  1 5/16 STOR  1P-5766  9U-7439  1 1/16 STOR  7/16 STOR  7/16 STOR  7/16 STOR 
240-2042  1U-9128  1U-9834  1 5/16 STOR  1P-5766  9U-7438  7/8 STOR  7/16 STOR  7/16 STOR  7/16 STOR 
397-1516  1U-9127  4C-4088  1U-9869  8T-9403  9U-7438  7/8 STOR  7/16 STOR  7/16 STOR  7/16 STOR 
398-1472  1U-9127  4C-4088  1U-9869  8T-9403  9U-7438  7/8 STOR  7/16 STOR  7/16 STOR  7/16 STOR 
398-1473  1U-9127  4C-4088  1U-9869  8T-9403  9U-7438  7/8 STOR  7/16 STOR  7/16 STOR  7/16 STOR 
452-6227  1U-9127  4C-4088  1U-9869  8T-9403  9U-7438  7/8 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
452-6240  1U-9127  4C-4088  1U-9869  8T-9403  9U-7438  7/8 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
452-6242  1U-9127  4C-4088  1U-9869  8T-9403  9U-7438  7/8 STOR  7/16 STOR  3/4 STOR  7/16 STOR 
528-9293  1U-9127  4C-4088  1U-9869  8T-9403  9U-7438  7/8 STOR  7/16 STOR  3/4 STOR  7/16 STOR 

Caterpillar Information System:

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