Bench Test Procedure for Hydraulic Piston Pumps{5070} Caterpillar


Bench Test Procedure for Hydraulic Piston Pumps{5070}

Usage:

TK711 101
Track Feller Buncher:
1090 Series II (S/N: BZJ1-UP)
1190 Series II (S/N: BZK1-UP)
1190T Series II (S/N: BZL1-UP)
1290T Series II (S/N: BZM1-UP)
2491 (S/N: P5J1-UP)
2590 (S/N: P6B1-UP)
511 (S/N: 5111-UP)
511B (S/N: F7A1-UP)
521 (S/N: 5211-UP)
521B (S/N: F7B1-UP)
522 (S/N: 5221-UP)
522B (S/N: F7C1-UP)
532 (S/N: 5321-UP)
541 Series 2 (S/N: F7D1-UP)
552 Series 2 (S/N: F7G1-UP)
TK1051 (S/N: 9HZ1-UP)
TK711 (S/N: 1011-UP)
TK721 (S/N: 1021-UP)
TK722 (S/N: 1031-UP)
TK732 (S/N: 1041-UP)
TK741 (S/N: 2021-UP)
TK751 (S/N: 3011-UP)
TK752 (S/N: 3021-UP)

Introduction

Note: Due to the power requirements of the pumps, the 9U-5000 Series Test Bench may not be used. The minimum power requirement for this procedure is 111.9 kW (150 hp).

Table 1
Revision     Summary of Changes in REHS1723    
08     Removed Fabricated Tooling Section.    
Included tooling 457-2323 in Table 12.
07     Added REHS1761 "Required Tooling for Bench Testing Hydraulic Components" to ""References" " section of document.    
06     Added new machine serial number prefixes to document.    
Added part numbers 228-4948 Piston Pump Gp and 307-1696 Piston Pump Gp to document.
Added ""Canceled Part Numbers and Replaced Part Numbers" " section to document.
Changed flow values in steps 4a, 4b, and 4c for 308-0094 Piston Pump Gp
Corrected many callouts to make document accurate

© 2014 Caterpillar All Rights Reserved. This guideline is for the use of Cat dealers only. Unauthorized use of this document or the proprietary processes therein without permission bay be violation of intellectual property law. Information contained in this document is considered Caterpillar: Confidential Yellow.

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 may not include all 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    

Connections for the Caterpillar Hydraulic Test Center




Illustration 2g01128604

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" inlet for the flow meter with flow limiter

(6) "F3"outlet for the flow meter with pressure control

(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 3g01128605

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

Note: Due to the power requirements of the pumps, the 9U-5000 Series Test Bench may not be used. The minimum power requirement for this procedure is 111.9 kW (150 hp).

Port Locations




Illustration 4g01128607

Typical port locations and adjustments

(26) Discharge port for the pilot pump

(27a) (27b) Adjustment screw for margin pressure (27b is seen in the Illustration, 27a is behind 27b)

(28a) (28b) Pressure port for load sensing

(29a) (29b) Gauge port for discharge pressure

(30) Pressure port for power shift

(31a) (31b) Adjustment screw for constant power

(32) Case drain port

(33a) (33b) Discharge port

(34) Suction port

(35a) (35b) Pressure port for destroke

(36) Adjustment screw for maximum angle




Illustration 5g01443482

4C-3582 Load Sensing Valve

Note: One discharge port (33a) will be hooked up to the 4C-3582 Load Sensing Valve in order to check the margin pressure. The other discharge port (33b) will be hooked up to the circuitry on the Caterpillar hydraulic test center.




Illustration 6g01128614

4C-3582 Load Sensing Valve




Illustration 7g01128613

4C-3582 Load Sensing Valve




Illustration 8g01128617

Schematic for 4C-3582 Load Sensing Valve

(37) Outlet port

(38) Adjustment for the discharge flow

(39) Inlet port

(40) High-pressure port

(41) Adjustment for the discharge pressure

(42) Low-pressure port

(43) Pressure port for load sensing




Illustration 9g02448658

4C-3582 Load Sensing Valve and 1U-5796 Pressure Differential Gauge

(37) To the flow meter on the test bench.

(38) Adjustment knob for discharge flow

(39) From the pump discharge port

(40) To the high side of the differential gauge

(41) Load control for pump discharge pressure

(42) To the low side of the differential gauge

(43) Pressure port for load sensing

(44) Pressure differential gauge group

(45) To the low side of the load sensing valve

(46) To high side of the load sensing valve

  1. Connect a 1 inch high-pressure "XT-6" hose from pump discharge port (33a) to inlet port (39) on the 4C-3582 Load Sensing Valve .

  1. Connect a 1 inch high-pressure "XT-6" hose from outlet port (37) on the 4C-3582 Load Sensing Valve to "F4" flow meter inlet (3) on the test center.

  1. Connect a 1 inch high pressure "XT-6" hose from "F4" flow meter outlet (9) on the test center back to tank (10) on the test center.

  1. Connect a 6D-7726 Hose Assembly to pressure port for load sensing (43) on the 4C-3582 Load Sensing Valve to pressure port for load sensing (28a) on the pump. Connect signal pressure (8) from the test center to pressure port for load sensing (28b) on the pump.

    Note: Do not use 177-7860 Hose Assembly or 177-7861 Hose Assembly for load sensing signal. The flow rate through these hoses will not compensate for the possible leakage through the control valve. Erratic readings will result.

  1. Connect 1U-5796 Pressure Differential Gauge Group (44) to high-pressure port (40) and low-pressure port (42) on the 4C-3582 Load Sensing Valve . The port marked "hi" (46) on the 1U-5796 Pressure Differential Gauge Group should be hooked up to the port marked "hi" (40) on the 4C-3582 Load Sensing Valve . The port marked "low" (45) on the 1U-5796 Pressure Differential Gauge Group should be hooked up to the port marked "low" (42) on the 4C-3582 Load Sensing Valve .

    Note: The ports marked "low" (42) and "sense line" (43) on the 4C-3582 Load Sensing Valve are reading the same pressure.

    Note: Verify that flow controls for discharge (1) and (38) are open.

Pump Pre-Test Set Up

Note: Mount the pump with the PTO flange downward in order to purge all the air from the pump.

  1. Connect signal pressure (8) from the test center to the pressure port for power shift (30). Refer to Illustration 2 and Illustration 4.

  1. Connect the remaining discharge port (33b) to the "F3" flow meter inlet (2) on the test bench.

    Connect an 8T-0860 Gauge to each gauge port for discharge pressure (29a) and (29b). By using an 8T-7860 Fitting , connect an 8T-0860 Gauge to each pressure port for destroke (35a) and (35b) .

  1. Connect discharge port for the pilot pump (26) to an in-line flow meter in order to measure the discharge for the pilot pump.

  1. Connect suction port (34) to test bench oil supply (12) with the fabricated suction adapter. See Illustration 6.

  1. Purge all air from the suction lines before rotating the pump. Loosen the suction hose at the pump until oil leaks from the connection. Tighten the suction hose.

  1. Remove the plug from case drain port (32). Fill the pump case with oil before rotating. When the case is full, oil should exit case drain port (32). Reinstall the plug-in case drain port (32) .

  1. Do not rotate the pump in the wrong direction. The correct direction of rotation will be stated on the pump. The direction of rotation is viewed from the input shaft end. Visually check for correct direction of rotation.

Test Procedure




Illustration 10g01017523

Note: 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)

Note: For more accurate pressure readings, take pressure readings directly from gauge port for discharge pressure (29) and pressure port for destroke (35) .

  1. Start rotating the pump according to Step 1 of the test specifications. Listen for abnormal noise. Verify flow from discharge port for the pilot pump (26). Verify that all the connections are tight. Check for leaks around shaft seals. Check for leaks around the control valves.

    Run the pump for at least 5 minutes in order to raise the temperature of the oil and purge the system of air.

  1. Increase the input RPM according to Step 2 of the test specifications.

    If the discharge flow is not within specifications, adjustment is necessary. To decrease flow, loosen the locknut on adjustment screw for maximum angle (36). Turn adjustment screw for maximum angle (36) clockwise. To increase flow, loosen the locknut on adjustment screw for maximum angle (36). Turn adjustment screw for maximum angle (36) counterclockwise.

  1. Use the following steps to set the margin pressure of both pumps.

      Note: Observe the gauge that is connected to pressure port for destroke (35). Destroke pressure will begin to rise just before the margin pressure setting is reached.

    1. Verify that flow controls for discharge (1) and (38) are wide open. Use adjustment knob for discharge pressure (41) in order to load pump discharge port (33a) slowly. Load discharge port (33a) to the load sensing pressure value in Step 3.a of the test specifications. Use adjustment knob for discharge flow (38) in order to restrict the discharge flow slowly. Restrict the flow to the value in Step 3.a of the test specifications. The discharge pressure and the margin pressure should now be equal to the values in Step 3.a of the test specifications.

      If the margin pressure is not within specifications, adjust adjustment screw for margin pressure (27a). To increase margin pressure, loosen the locknut on adjustment screw for margin pressure (27a). Turn adjustment screw for margin pressure (27a) clockwise. To decrease margin pressure, loosen the locknut on adjustment screw for margin pressure (27a). Turn adjustment screw for margin pressure (27a) counterclockwise.

    1. Set margin pressure for the pump not connected to the 4C-3582 Load Sensing Valve . Slowly increase discharge pressure to discharge port (33b) to the value in Step 3.b of the test specifications. Use control for discharge flow (1) in order to restrict the discharge flow to the value in Step 3.b of the test specifications. Destroke pressure will begin to rise just before the margin pressure setting is reached.

      If the margin pressure is not within specifications, adjust adjustment screw for margin pressure (27b). To increase margin pressure, loosen the locknut on adjustment screw for margin pressure (27b). Turn adjustment screw for margin pressure (27b) clockwise. To decrease margin pressure, loosen the locknut on adjustment screw for margin pressure (27b). Turn adjustment screw for margin pressure (27b) counterclockwise.

      Adjust control for discharge flow (1) and load control for "F3" pump discharge pressure (24) after the margin pressure is set.

  1. Verify that the adjustment screw for constant power is adjusted properly. Follow the following steps. Both pumps will be tested at the same time. Compare the flow rates at each step to the values in the test specifications. Refer to Illustration 10 for an example of a power curve.

    Decrease input rpm and all pressures to zero. Connect a hose between gauge ports for discharge pressure (29) to pressure ports for load sensing (28). Connect a hose between the gauge ports in order to allow the pump to remain at full displacement at pressures higher than margin pressure.

    1. Slowly increase input RPM to the value in Step 4.a of the test specifications. Increase discharge pressure to both pumps to the value in Step 4.a of the test specifications. Observe the pressure gauge that is connected to pressure port for destroke (35). Destroke pressure will begin to rise when the pump starts to destroke. The pump is at the destroke point. The pump should now be under constant power control.

      Equally cycle the load to both pumps. Cycle the load above the value in Step 4.a of the test specifications in order to verify the destroke point. As the pump discharge pressure increases, the flow rate for discharge should begin to drop. If either pump begins to destroke too soon, adjust screw for constant power (31a) or (31b). If either pump begins to destroke too late, adjust screw for constant power (31a) or (31b) .

      To increase the flow rate, loosen the locknut on adjustment screw for constant power (31). Turn adjustment screw for constant power (31) clockwise until the flow rate matches the value in the test specifications. To decrease the flow rate, loosen the locknut on adjustment screw for constant power (31). Turn adjustment screw for constant power (31) counterclockwise until the flow rate matches the value in the test specifications.

    1. Use the test bench to load the pump to the value in Step 4.b of the test specifications. Observe the flow.

      ------ 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.

      ----------------------

    1. Use the test bench to load the pump to the value in Step 4.c of the test specifications. Observe the flow.

      Note: The pump control may need disassembled if the flow rates for discharge in Step 4.b and Step 4.c are not within specifications. Also, new springs may need installed.

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

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

----------------------

Reduce input RPM and all pressures to zero. Remove the component from the bench. Drain the oil from the pump. Plug all ports.

Test Specifications

Table 3
Part Number     Step     RPM     Discharge pressure kPa (psi)     Discharge Flow lpm (gpm)     Load Sensing Pressure kPa (psi)     Margin Pressure kPa (psi)     Powershift Pressure kPa (psi)     Pilot Pump Flow lpm (gpm)    
187- 5182     Pump Rotation CW    
1 600     0 (0)     105 (27.7)             0 (0)     11.4 (3.0)    
2 1000     0 (0)     175 (46.2)             0 (0)     19.0 (5.0)    
3a 1000     17000 (2465)     87.5 (23.1)     15000 (2175)     2000 ±100 (290 ±14.5)     0 (0)     19.0 (5.0)    
3b 1000     17000 (2465)     87.5 (23.1)     15000 (2175)     2000 ±100 (290 ±14.5)     0 (0)     19.0 (5.0)    
4a 1000     7000 (1015)     175 ±3 (46.2± 0.8)             1850 (19.3)     19.0 (5.0)    
4b 1000     15000 (2175)     120 ±3 (31.7 ± 0.8)             1850 (19.3)     19.0 (5.0)    
4c 1000     34000 (4931)     47.5 ±3 (12.5± 0.8)             1850 (19.3)     19.0 (5.0)    

Table 4
Part Number     Step     RPM     Discharge pressure kPa (psi)     Discharge Flow lpm (gpm)     Load Sensing Pressure kPa (psi)     Margin Pressure kPa (psi)     Powershift Pressure kPa (psi)     Pilot Pump Flow lpm (gpm)    
217-9699     Pump Rotation CW    
1 600     0 (0)     128(33.8)             0 (0)     11.4 (3.0)    
2 1000     0 (0)     160 (42.3)             0 (0)     19.0 (5.0)    
3a 1000     17000 (2465)     80 (21.1)     14790 (2145)     2200 ±100 (320 ±14.5)     0 (0)     19.0 (5.0)    
3b 1000     17000 (2465)     80 (21.1)     14790 (2145)     2200 ±100 (320 ±14.5)     0 (0)     19.0 (5.0)    
4a 1000     7000 (1015)     147 (39)             1930 (230)     19.0 (5.0)    
4b 1000     13000 (1885)     109.5 (28.9)             1930 (230)     19.0 (5.0)    
4c 1000     35000 (5080)     50 (13.2)             1930 (230)     19.0 (5.0)    

Table 5
Part Number     Step     RPM     Discharge pressure kPa (psi)     Discharge Flow lpm (gpm)     Load Sensing Pressure kPa (psi)     Margin Pressure kPa (psi)     Powershift Pressure kPa (psi)     Pilot Pump Flow lpm (gpm)    
218- 9932     Pump Rotation CW    
1 600     0 (0)     96 (25.4)             0 (0)     11.4 (3.0)    
2 1000     0 (0)     160 (42.3)             0 (0)     19.0 (5.0)    
3a 1000     17200 (2496)     80.0 (21.1)     15200 (2205)     2200 ±100 (319 ±14.5)     0 (0)     19.0 (5.0)    
3b 1000     17200 (2495)     80.0 (21.1)     15200 (2205)     2200 ±100 (319 ±14.5)     0 (0)     19.0 (5.0)    
4a 1000     21580 (3130)     146 ±3 (38.5± 0.8)             0 (0)     19.0 (5.0)    
4b 1000     26200 (3800)     117 ±3 (30.8 ± 0.8)             0 (0)     19.0 (5.0)    
4c 1000     34000 (4931)     92.4 ±3 (24.4± 0.8)             0 (0)     19.0 (5.0)    

Table 6
Part Number     Tandem pump consisting of 228-4670 (see this document) and 172-4879 (see REHS3492)    
228- 4948    

Table 7
Part Number     Step     RPM     Discharge pressure kPa (psi)     Discharge Flow lpm (gpm)     Load Sensing Pressure kPa (psi)     Margin Pressure kPa (psi)     Powershift Pressure kPa (psi)     Pilot Pump Flow lpm (gpm)    
228- 4670     Pump Rotation CW    
1 600     0 (0)     105 (27.7)             0 (0)     11.4 (3.0)    
2 1000     0 (0)     175 (46.2)             0 (0)     19.0 (5.0)    
3a 1000     17000 (2465)     87.5 (23.1)     15000 (2175)     2000 ±100 (290 ±14.5)     0 (0)     19.0 (5.0)    
3b 1000     17000 (2465)     87.5 (23.1)     15000 (2175)     2000 ±100 (290 ±14.5)     0 (0)     19.0 (5.0)    
4a 1000     7000 (1015)     175 ±3 (46.2± 0.8)             1850 (19.3)     19.0 (5.0)    
4b 1000     15000 (2175)     120 ±3 (31.7 ± 0.8)             1850 (19.3)     19.0 (5.0)    
4c 1000     34000 (4931)     47.5 ±3 (12.5± 0.8)             1850 (19.3)     19.0 (5.0)    

Table 8
Part Number     Step     RPM     Discharge pressure kPa (psi)     Discharge Flow lpm (gpm)     Load Sensing Pressure kPa (psi)     Margin Pressure kPa (psi)     Powershift Pressure kPa (psi)     Pilot Pump Flow lpm (gpm)    
241-3534     Pump Rotation CW    
1 600     0 (0)     107.8 (28.5)             0 (0)     11.2 (3)    
2 1000     0 (0)     180 (47.5)             0 (0)     19 (5)    
3a 1000     17000 (2465)     90 (23.7)     14930 (2145)     2200 ±100 (319 ±14.5)     0 (0)     19 (5)    
3b 1000     17000 (2465)     90 (23.7)     14930 (2145)     2200 ±100 (319 ±14.5)     0 (0)     19 (5)    
4a The torque control on this pump is not used on this machine application. The high-pressure cutoff valve needs tested instead. The discharge pressure should be slowly increased to 35000 kpa (5075 psi). The discharge flow should be zero when high-pressure cut is reached.    
4b
4c

Table 9
Part Number     Step     RPM     Discharge pressure kPa (psi)     Discharge Flow lpm (gpm)     Load Sensing Pressure kPa (psi)     Margin Pressure kPa (psi)     Powershift Pressure kPa (psi)     Pilot Pump Flow lpm (gpm)    
268-6729     Pump Rotation CW    
1 600     0 (0)     102 (26.9)             0 (0)     11.4 (3.0)    
2 1000     0 (0)     170 (44.9)             0 (0)     19.0 (5.0)    
3a 1000     17000 (2465)     85 (22.5)     14790 (2145)     2200 ±100 (320 ±14.5)     0 (0)     19.0 (5.0)    
3b 1000     17000 (2465)     85 (22.5)     14790 (2145)     2200 ±100 (320 ±14.5)     0 (0)     19.0 (5.0)    
4a 1000     7000 (1015)     170 (44.9)             1930 (230)     19.0 (5.0)    
4b 1000     15000 (2175)     102 (26.9)             1930 (230)     19.0 (5.0)    
4c 1000     34000 (4931)     62.8 (16.6)             1930 (230)     19.0 (5.0)    

Table 10
Part Number     Step     RPM     Discharge pressure kPa (psi)     Discharge Flow lpm (gpm)     Load Sensing Pressure kPa (psi)     Margin Pressure kPa (psi)     Powershift Pressure kPa (psi)     Pilot Pump Flow lpm (gpm)    
307-1696     Pump Rotation CW    
1 600     0 (0)     120 (31.6)             0 (0)     11.4 (3.0)    
2 1000     0 (0)     200 (52.6)             0 (0)     19.0 (5.0)    
3a 1000     17000 (2465)     100 (26.3)     14500 (2103)     2500 ±100 (363 ±14.5)     0 (0)     19.0 (5.0)    
3b 1000     17000 (2465)     100 (26.3)     14500 (2103)     2500 ±100 (363 ±14.5)     0 (0)     19.0 (5.0)    
4a 1000     14100 (2045)     190 (50)             1100 (160)     19.0 (5.0)    
4b 1000     27000 (3195)     103 (27)             1100 (160)     19.0 (5.0)    
4c 1000     34990 (5075)     71 (18.7)             1100 (160)     19.0 (5.0)    

Table 11
Part Number     Step     RPM     Discharge pressure kPa (psi)     Discharge Flow lpm (gpm)     Load Sensing Pressure kPa (psi)     Margin Pressure kPa (psi)     Powershift Pressure kPa (psi)     Pilot Pump Flow lpm (gpm)    
308-0094     Pump Rotation CW    
1 600     0 (0)     114 (30.1)             0 (0)     11.4 (3.0)    
2 1000     0 (0)     190 (50.2)             0 (0)     19.0 (5.0)    
3a 1000     17000 (2465)     95 (25.1)     14490 (2102)     2500 ±100 (363 ±14.5)     0 (0)     19.0 (5.0)    
3b 1000     17000 (2465)     95 (25.1)     14490 (2102)     2500 ±100 (363 ±14.5)     0 (0)     19.0 (5.0)    
4a 1000     13000 (1885)     193 (50.8)             1100 (160)     19.0 (5.0)    
4b 1000     25900 (3756)     103 (27.1)             1100 (160)     19.0 (5.0)    
4c 1000     34990 (5075)     69 (18.2)             1100 (160)     19.0 (5.0)    

Test Bench Tooling

Table 12
Part Number     Mounting Flange     Drive Adapter     Suction Adapter     Split Flange     Flange Adapter     Destroke Pressure Port     Power Shift Port     Charge Pump Discharge    
187- 5182     9U- 5750     9U- 7519     457-2323     1P-5767     9U- 7440     M12 X1.5     9/16-18 UNF     3/4-16 UNF    
217-9699     9U- 5750     9U- 7519     457-2323     1P-5767     9U- 7440     M12 X1.5     9/16-18 UNF     3/4-16 UNF    
218- 9932     9U- 5750     9U- 7519     457-2323     1P-5767     9U- 7440     M12 X1.5     9/16-18 UNF     3/4-16 UNF    
228- 4670     9U- 5750     9U- 7519     457-2323     1P-5767     9U- 7440     M12 X1.5     9/16-18 UNF     3/4-16 UNF    
241-3534     9U- 5750     9U- 7519     457-2323     1P-5767     9U- 7440     M12 X1.5     9/16-18 UNF     3/4-16 UNF    
268-6729     9U- 5750     9U- 7519     457-2323     1P-5767     9U- 7440     M12 X1.5     9/16-18 UNF     3/4-16 UNF    
307-1696     9U-5750     9U-7519     457-2323     1P-5767     9U- 7440     M12 X1.5     9/16-18 UNF     3/4-16 UNF    
308-0094     9U- 5750     9U- 7519     457-2323     1P-5767     9U- 7440     M12 X1.5     9/16-18 UNF     3/4-16 UNF    

Caterpillar Information System:

TH220B and TH330B Telehandlers Machine Systems Main Control Valve (Implement) - Remove
773E Off-Highway Truck Direction and Speed Control
3408E and 3412E Engines for Caterpillar Built Machines Cylinder Block
797B Off-Highway Truck Center Arm (Steering) - Remove and Install
CP-533E and CS-533E Vibratory Soil Compactors Machine Systems Control Valve (Shift) - Install
CP-323C and CS-323C Paving Compactors Isolation Mounts - Inspect
CP56B, CP68B, CP74B, CS56B, CS68B, CS74B, CS78B and CS79B Vibratory Soil Compactors Tire Inflation - Check
CP-533E and CS-533E Vibratory Soil Compactors Machine Systems Control Valve (Shift) - Remove
216B, 226B, 232B, 236B, 242B, 246B, 248B, 252B, 262B and 268B Skid Steer Loaders Alternate Exit
740 EJECTOR Articulated Truck Ejector, Steering, Suspension, and Fan Drive Systems Suspension Accumulator - Test and Charge
AD30 Underground Articulated Truck Power Train Differential Pinion Preload - Adjust
AD30 Underground Articulated Truck Power Train Differential Backlash and Bearings - Adjust
R1600G Load Haul Dump Braking System Brake Disc Wear - Check
143H and 163H Motor Graders Machine Systems Drawbar - Remove
143H and 163H Motor Graders Machine Systems Drawbar - Install
143H and 163H Motor Graders Machine Systems Front Frame from Rear Frame (Articulating Hitch) - Separate
143H and 163H Motor Graders Machine Systems Front Frame to Rear Frame (Articulating Hitch) - Connect
793B Off-Highway Truck Hydraulic System Hoist Cylinder
CS-563E, CP-563E, CS-573E, CP-573E, CS-583E, CP-583E, CS-663E, CP-663E and CS-683E Vibratory Soil Compactors Daily Inspection
725 and 730 Articulated Trucks Braking System General Information
C11 and C13 Engines for Caterpillar Built Machines Gear Group (Front) - Remove
3126B Engines for 322C, 325C, and M325C Excavators and for the 325C Mobile Hydraulic Power Unit Diagnostic Codes
TH220B and TH330B Telehandlers Machine Systems Main Control Valve (Implement) - Install
2003/09/01 A New Retainer for the Final Drive With Improved Service Life Is Now Used {4050}
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