- Paving Compactor:
- CB-214E (S/N: 2141-UP)
- CB-224E (S/N: 2241-UP)
- CB-225E (S/N: 2251-UP)
- CB14 (S/N: DST1-UP; DTT1-UP)
- CB34 (S/N: 3451-UP)
- CB34XW (S/N: 3471-UP)
- CC34 (S/N: 3461-UP)
- CB-224E (S/N: 2241-UP)
- Vibratory Utility Compactor:
- CB22 (S/N: 2201-UP)
- CB24 (S/N: 2401-UP)
- CB32 (S/N: 3201-UP)
- CC24 (S/N: 2411-UP)
- CB24 (S/N: 2401-UP)
- Vibratory Soil Compactor:
- CB-334E (S/N: C3A1-UP; C3D1-UP)
- CB-335E Series II (S/N: C3C1-UP)
Introduction
| Revision | Summary of Changes in REHS2641 |
| 05 | Updated Contact Information in introduction. |
| Added ""Canceled Part Numbers and Replaced Part Numbers" " section to document. | |
| Added REHS1761 "Required Tooling for Bench Testing Hydraulic Components" to ""References" " section of document. |
© 2012 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 may 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 website. 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
- Cat 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.
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.
Safety
 |
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. |
 |
|
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin. |
|
|
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. |
|
References
| 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 1 | g01162008 |
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 2 | g01162009 |
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 3 | g01162056 |
Connections for the test bench (26) "Flow meter 1" loop and "Flow meter 2" loop (27) Oil Supply | |
 | |
| Illustration 4 | g01162057 |
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 5 | g01162058 |
Control and Gauges for the test bench (36) Auxiliary oil supply pressure (37) Signal pressure (38) Control for signal pressure (39) "Flow meter 1" discharge pressure (40) Control for auxiliary oil supply pressure (41) "Flow meter 2" discharge pressure (42) Auxiliary oil supply 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 6 | g01420931 |
Typical port locations and pump adjustments (49) Solenoid for the neutral brake valve (50) Pilot pressure ports (51) Case drain ports (52) Gauge port for discharge pressure (53) Gauge port for charge relief (54) Gauge port for neutral brake valve (55) Adjustment screw for mechanical centering (56) Discharge ports (57) Inlet port for the charge pump (58) Adjustment screw for charge relief valve | |
 | |
| Illustration 7 | g01420917 |
Hydraulic Schematic (49) Solenoid for the neutral brake valve (50) Pilot pressure ports (51) Case drain ports (52) Gauge port for discharge pressure (53) Gauge port for charge relief (54) Gauge port for neutral brake valve (55) Adjustment screw for mechanical centering (56) Discharge ports (57) Inlet port for the charge pump (58) Adjustment screw for charge relief valve | |
9U-5902 Rectifier Block
 | |
| Illustration 8 | g01421428 |
9U-5902 Rectifier Block Connections | |
 | |
| Illustration 9 | g01421429 |
9U-5902 Rectifier Block Schematic (59) High-pressure port from pump discharge (60) Outlet to flow meter loop (61) High-pressure port from pump discharge (62) Low-pressure return from heat exchanger | |
9U-5893 Heat Exchanger
 | |
| Illustration 10 | g01421432 |
9U-5893 Heat Exchanger Connections (63) Inlet from flow meter loop (64) Outlet to rectifier block (65) Water inlet (66) Water outlet | |
198-4240 Electric Pressure Gauge Group
 | |
| Illustration 11 | g01423263 |
Connections for 198-4240 Electric Gauge Group (73) Pressure gauge group (74) Red transducer 34500 kPa (5000 psi) (75) Blue transducer 3450 kPa (500 psi) | |
Pump Setup
Note: A power supply is required to operate the solenoid. The supply should be able to deliver 0 mA to 1.7 A with an infinite setting in that range.
- Install pressure taps in the following test ports:
- (50) Pilot pressure ports
- (52) Gauge ports for the discharge pressure
- (53) Gauge port for charge relief
- (54) Gauge port for neutral brake valve
- (50) Pilot pressure ports
- Mount the pump with a case drain port (51) upward.
- Connect pump discharge ports (56a) and (56b) to the 9U-5902 Rectifier Block high-pressure ports (59) and (61) .
- Connect the 9U-5902 Rectifier Block outlet (60) to the flow meter inlet of the test bench.
- Connect the "flow meter outlet" to the 9U-5398 Heat Exchanger inlet (63) .
- Connect the 9U-5398 Heat Exchanger outlet (64) to the low-pressure return (62) on the 9U-5902 Rectifier Block .
- Connect a 186-2605 Pressure Gauge to the gauge port for neutral brake valve (54) .
- Fill the pump case with oil. Pour oil directly into a case drain port (51) until the case is full.
- Connect an in-line flow meter to the case drain port (51) .
- Connect an auxiliary oil supply to the charge pump inlet (56) .
Adjustment for Mechanical Zero Position
- Turn the load control all the way in the clockwise direction in order to control the pump discharge pressure. Start rotating the pump at the value in Step 1 of the test procedure. This unit is not equipped with a charge pump. Be sure to sustain charge pump flow to charge pump inlet (57) in Steps 1 through 5 of the test specifications. Vent the pilot pressure ports (50) to the atmosphere. This will equalize the pressure on the servo spool. Install pressure gauges on the pressure ports for the pump discharge (52). If the mechanical zero adjustment is incorrect, a discharge pressure that is higher than the charge pressure may occur.
- Turn the adjustment screw for the mechanical centering (55) clockwise. Continue to turn until a pressure of 200 psi above charge pressure is achieved. This pressure may be seen on the gauge port for the system pressure A (52a) or gauge ports for the system pressure B (52b). Mark the position of the adjustment screw for the mechanical centering (55) .
- Turn adjustment screw for the mechanical centering (55) counterclockwise until pressure increases of gauge ports (52a) or (52b). Mark the position of the adjustment screw for the mechanical centering (55) .
- A mark should be placed halfway between position one and position two. Turn the adjustment screw for the mechanical centering (55) to the midpoint of both marks. There should be less than a 34.5 kPa (5 psi) pressure differential between pump gauge ports (52).
- Stop rotating the pump. Turn the load control on the test bench for pump discharge pressure counterclockwise. Allow the discharge pressure of the pump to decrease. Disconnect pressure gauges from ports (52) .
Test Procedure
Note: The steps in the procedure correlate with the steps under the test specifications according to your specific part number.
The contamination level of the hydraulic oil that is in the test bench should be ISO 16/13 or better. The oil in the test bench should be one of the following oils:
- SAE 10W at 50 °C (122 °F)
- Mobil DTE-11 at 46 °C (115 °F)
- Supply auxiliary oil to the inlet for the charge pump (57) according to Step 1 of the test specifications. Start rotating the pump according to Step 1 of the test specifications. Listen for abnormal noise. Verify that all connections are tight. Check for leaks around shaft seals. Check for leaks around the control valve. Check the gauge port for charge relief pressure (53). Compare the value of the charge pressure with the value in Step 1 of the test specifications. If the charge pressure is not within the test specifications, adjust accordingly. Turn the adjustment screw for charge pressure (58) clockwise in order to increase the pressure. Turn the adjustment screw for the charge pressure (58) counterclockwise in order to decrease the pressure.
- Slowly apply current to the neutral brake solenoid (49) according to the value in Step 2 of the test specifications. The pressure on the gauge port for neutral brake valve (54) should increase to the charge relief valve value in Step 2 of the test specifications.
Slowly decrease the current when Step 2 is done.
- Slowly increase the input rpm and apply control pressure to pilot pressure port (50a) according to Step 3 of the test specifications. Verify that the discharge flow is within the specification.
Note: Some displacement of the pump could be controlled with a mechanical displacement lever. Shift the mechanical displacement lever fully in either direction in order to acquire pump flow.
- Slowly increase the discharge pressure to the value in Step 4 of the test specifications. Measure the pump leakage. Calculate the total loss. The pump may not be mechanically feasible if the total loss is higher than the allowable value in Step 4 of the test specifications.
Subtract the discharge flow that was recorded in Step 4 from the discharge flow that was recorded in Step 3 in order to find the total loss.
An example is listed below:
Example: Step 2 flow 162 L/min (42.8 US gpm) - Step 3 flow 158 L/min (41.7 US gpm) = total loss 4 L/min (1.1 US gpm). The max. 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.
- Slowly increase the pump discharge pressure according to the value in Step 5 of the test specifications. The discharge flow should be zero when the high-pressure cut is reached.
Repeat Steps 3 through 5 while control pressure is applied to pilot pressure port (50b).
Note: A pump's displacement could be controlled with a mechanical displacement lever. Repeat Steps 3 through 5 while the mechanical displacement lever is shifted in the opposite direction.
|
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. |
|
|
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin. |
|
Reduce RPM and all pressures to zero. Remove the component from the test bench. Drain the oil from the pump. Plug all of the ports.
Test Specifications
| Part Number | 229-3752 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 22 (5.8) | 22 (5.8) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4570) | 35000 (5080) |
| Auxiliary Flow Supply Lpm (gpm) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) |
| Charge Relief Valve Setting kPa (psi) | 2400 (350) | 2400 (350) | 2400 (350) | 2400 (350) | 2400 (350) |
| Max. Internal Leakage Lpm (gpm) | 2.2 (.58) Max | - | |||
| Part Number | 229-3753 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 28 (7.4) | 28 (7.4) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4570) | 35000 (5080) |
| Auxiliary Flow Supply Lpm (gpm) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) |
| Charge Relief Valve Setting kPa (psi) | 2400 (350) | 2400 (350) | 2400 (350) | 2400 (350) | 2400 (350) |
| Max Internal Leakage Lpm (gpm) | 2.8 (.74) Max | - | |||
| Part Number | 245-3215 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 16 (4.2) | 16 (4.2) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4570) | 35000 (5080) |
| Auxiliary Flow Supply Lpm (gpm) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) |
| Charge Relief Valve Setting kPa (psi) | 2400 (350) | 2400 (350) | 2400 (350) | 2400 (350) | 2400 (350) |
| Max Internal Leakage Lpm (gpm) | 1.6 (.42) Max | - | |||
| Part Number | 260-9095 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 47 (12.4) | 47 (12.4) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4570) | 35000 (5080) |
| Auxiliary Flow Supply Lpm (gpm) | 28 (7.4) | 28 (7.4) | 28 (7.4) | 28 (7.4) | 28 (7.4) |
| Charge Relief Valve Setting kPa (psi) | 2200 (320) | 2200 (320) | 2200 (320) | 2200 (320) | 2200 (320) |
| Max Internal Leakage Lpm (gpm) | 4.7 (1.24) Max | - | |||
| Part Number | 261-5601 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | 1.7 | 1.7 | 1.7 |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 42 (11) | 42 (11) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4569) | 35000 (5076) |
| Auxiliary Flow Supply Lpm (gpm) | 28 (7.4) | 28 (7.4) | 28 (7.4) | 28 (7.4) | 28 (7.4) |
| Charge Relief Valve Setting kPa (psi) | 2250 (326) | 2250 (326) | 2250 (326) | 2250 (326) | 2250 (326) |
| Max Internal Leakage Lpm (gpm) | 4.2 (1.1) Max | - | |||
| Part Number | 271-6331 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 22 (5.8) | 22 (5.8) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 22500 (3263) | 25000 (3625) |
| Auxiliary Flow Supply Lpm (gpm) | 28 (7.4) | 28 (7.4) | 28 (7.4) | 28 (7.4) | 28 (7.4) |
| Charge Relief Valve Setting kPa (psi) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Max Internal Leakage Lpm (gpm) | 2.2 (.58) Max | - | |||
| Part Number | 271-6332 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 18 (4.8) | 18 (4.8) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 22500 (3263) | 25000 (3625) |
| Auxiliary Flow Supply Lpm (gpm) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) |
| Charge Relief Valve Setting kPa (psi) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Max Internal Leakage Lpm (gpm) | 1.8 (.48) Max | - | |||
| Part Number | 278-3258 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2250(326) | 2250(326) | 2250(326) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 47 (12.4) | 47 (12.4) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4569) | 35000 (5076) |
| Auxiliary Flow Supply Lpm (gpm) | 28 (7.4) | 28 (7.4) | 28 (7.4) | 28 (7.4) | 28 (7.4) |
| Charge Relief Valve Setting kPa (psi) | 2250(326) | 2250(326) | 2250(326) | 2250(326) | 2250(326) |
| Max Internal Leakage Lpm (gpm) | 4.7 (1.24) Max | - | |||
| Part Number | 296-1553 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 15 (4.0) | 15 (4.0) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4569) | 35000 (5076) |
| Auxiliary Flow Supply Lpm (gpm) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) |
| Charge Relief Valve Setting kPa (psi) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Max Internal Leakage Lpm (gpm) | 1.8 (.48) Max | - | |||
| Part Number | 303-1500 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 22 (5.8) | 22 (5.8) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4569) | 35000 (5076) |
| Auxiliary Flow Supply Lpm (gpm) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) |
| Charge Relief Valve Setting kPa (psi) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Max Internal Leakage Lpm (gpm) | 2.2 (.58) Max | - | |||
| Part Number | 304-1618 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 22 (5.8) | 22 (5.8) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4569) | 35000 (5076) |
| Auxiliary Flow Supply Lpm (gpm) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) |
| Charge Relief Valve Setting kPa (psi) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Max Internal Leakage Lpm (gpm) | 2.2 (.58) Max | - | |||
| Part Number | 304-1620 | ||||
| Pump Rotation | CW | ||||
| Step | 1 | 2 | 3 | 4 | 5 |
| Input RPM | 600 | 600 | 1000 | 1000 | 1000 |
| Control Pressure kPa (psi) | - | - | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Neutral Brake Valve Current (Amp.) | - | 1.7 | - | - | - |
| Pump Discharge Flow Lpm (gpm) | 0 | 0 | 28 (7.4) | 28 (7.4) | - |
| Pump Discharge Pressure kPa (psi) | 0 | 0 | 0 | 31500 (4569) | 35000 (5076) |
| Auxiliary Flow Supply Lpm (gpm) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) | 7.5 (2.0) |
| Charge Relief Valve Setting kPa (psi) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) | 2500 (362.5) |
| Max Internal Leakage Lpm (gpm) | 2.8 (.74) Max | - | |||
Test Bench Tooling
| Part Number | Mounting Plate | Drive Adapter | Discharge Ports | Case Drain | Inlet Port for the Charge Pump | Pilot Pressure Ports |
|---|---|---|---|---|---|---|
| 229-3752 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 229-3753 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 245-3215 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 260-9095 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 261-5601 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | Mechanical Lever |
| 271-6331 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 271-6332 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 278-3258 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 296-1553 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 303-1500 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 304-1618 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |
| 304-1620 | 9U-9127 | 4C-4088 | 1 1/16 STOR | 1 1/16 STOR | 1 1/16 STOR | 7/16 STOR |