Bench Test Procedure for Hydraulic Piston Pumps{3108, 5070} Caterpillar

Bench Test Procedure for Hydraulic Piston Pumps{3108, 5070}

Usage:

Asphalt Paver:: AP-1000D (S/N: EAD1-UP); AP-1055D (S/N: FAC1-UP; A6P1-UP); AP-655C (S/N: CDG1-UP; AYP1-UP); BG-2255C (S/N: CKR1-UP); BG-2455D (S/N: BNW1-UP; BXW1-UP); BG-260D (S/N: BPW1-UP)
Reclaimer Mixer:: RM-250C (S/N: AWG1-UP); RM-300 (S/N: BWR1-UP)
Road Reclaimer/Soil Stabilizer:: RM-350 (S/N: 5FK1-UP); RM-350B (S/N: AXW1-UP); RM-500 (S/N: ASW110-UP); RM350B (S/N: 7FS1-UP); RR-250 SP RR (S/N: 6ED1-UP); RR-250B (S/N: 3RR1-UP); SM-350 (S/N: 1RM1-UP); SS-250 SP SLST (S/N: 6DD1-UP); SS-250B (S/N: 5GR1-UP)

Introduction

© 2010 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 web site. In order to address an urgent need, please use the following to forward your request to Caterpillar Repair Process Engineering:

Cat Dealer Technical Communicator
Global Dealer Solution Network
Cat Technical Representative
Knowledge Network (online)

Safety

Show/hide table

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.

Show/hide table

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.

Show/hide table

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

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

Show/hide table

Table 1
References
Media Number	Title
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

Show/hide table




Illustration 1	g01063311
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

Show/hide table




Illustration 2	g01114559
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

Show/hide table




Illustration 3	g01114556
Connections for the Test Bench (26) "Flow meter 1" loop and "Flow meter 2" loop (27) Oil Supply

Show/hide table




Illustration 4	g01093468
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 outlet (34) Auxiliary oil inlet (35) "Flow meter 1" inlet

Show/hide table




Illustration 5	g01063316
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

This piston pump is produced with multiple types of housings. Port locations will vary. Match the correct illustration with the pump that is being worked on.

Show/hide table




Illustration 6	g01191458
Typical port locations and adjustments for type 1 pumps. (49) Crossover relief valves (50) Gauge port for system pressure (51) Suction for charge pump (52) Case drain ports (53) Discharge ports (54) Adjustment for pump neutral (55) Gauge port for the servo (56) Inlet for the charge pump (57) Adjustment for the control neutral (58) Connector for the electronic displacement control (59) Solenoid for the electronic displacement control (60) Discharge port for the charge pump (61) Charge relief valve (62) Outlet to the filter (63) Inlet from the filter (64) Gauge port for the charge pressure

Show/hide table




Illustration 7	g01191904
Hydraulic Schematic for type 1 pumps (50) Gauge port for system pressure (52) Case drain ports (53) Discharge ports (56) Inlet for the charge pump

Show/hide table




Illustration 8	g01191539
Typical port locations and adjustments for type 2 pumps. (49) Crossover relief valves (50) Gauge port for system pressure (51) Suction for charge pump (52) Case drain ports (53) Discharge ports (54) Adjustment for pump neutral (55) Gauge port for the servo (56) Inlet for the charge pump (57) Adjustment for the control neutral (58) Solenoid for the electronic displacement control (59) Connector for the electronic displacement control (60) Discharge port for the charge pump (61) Charge relief valve (62) Outlet to the filter (63) Inlet from the filter (64) Gauge port for the charge pressure

Show/hide table




Illustration 9	g01191565
Hydraulic Schematic for type 2 pumps (49) Crossover relief valves (50) Gauge port for system pressure (52) Case drain ports (55) Gauge port for the servo (56) Inlet for the charge pump (58) Solenoid for the electronic displacement control (62) Outlet to the filter (63) Inlet from the filter (64) Gauge port for the charge pressure

9U-5902 Rectifier Block

Show/hide table




Illustration 10	g01122285
9U-5902 Rectifier Block Connections

Show/hide table




Illustration 11	g01192150
9U-5902 Rectifier Block Schematic (65) High-pressure port (66) High-pressure outlet (67) High-pressure port (68) Low-pressure inlet

9U-5893 Heat Exchanger

Show/hide table




Illustration 12	g01122281
9U-5893 Heat Exchanger Connections (69) Inlet "from flow meter loop" (70) Outlet "to rectifier block" (71) Water inlet (72) Water outlet

Connections for the Solenoid

Show/hide table




Illustration 13	g01120742
Connectors that are used on type 1 and type 2 pumps (73) MS connector (74) 4 pin Deutsch connector (75) 4 pin Packard connector (76) 2 pin Deutsch connector

There are several different connectors that are used for supplying current to the solenoids. Four different types of connectors are used for the electronic displacement control. Refer to Illustration 13 for your specific type of connector. The Packard (75), low current Deutsch (74), and MS connectors (73) all use a dual coil solenoid with 4 pin connectors. The high current Deutsch connectors (76) use two single coil solenoids (58) with 2 pin connectors for each solenoid.

Test the pumps with 4 pin connectors by first applying current from the power supply to terminals A and C. This step will verify the operation in one direction of the pump. This step also verifies the operation of the electronic displacement control. After the testing of A and C terminals is complete, feed current to B and D terminals to test the pump in the opposite direction.

Test the pumps with high current Deutsch connectors by applying current from the power supply to one solenoid at a time. This step will verify the operation in one direction of the pump. This step also verifies the operation of the electronic displacement control. After the testing is completed on the first solenoid, apply current to the other solenoid. This step tests the pump operation in the other direction.

Pump Setup

Note: Only test one pump at a time on tandem pumps. Isolate one of the pumps by connecting a hose between the discharge ports (53a) and (53b) on the pump that is not being tested.

Mount the pump with a case drain port (52) facing upward.

Connect pump discharge port (53a) to the 9U-5902 Rectifier Block high-pressure port (65). Connect pump discharge port (53b) to the 9U-5902 Rectifier Block high-pressure port (67).

Connect the 9U-5902 Rectifier Block outlet (66) to the flow meter inlet of the test bench.

Connect the "flow meter outlet" to the 9U-5398 Heat Exchanger inlet (69) .

Connect the 9U-5398 Heat Exchanger outlet (70) to the low-pressure return (68) on the 9U-5902 Rectifier Block .

Connect the charge pump suction port (51) or (56) to the test bench oil supply.

For a tandem pump connect a hose from the discharge port for the charge pump (60) to one of the inlets for the charge pump (56a) or (56b) .

Connect a hose between the outlet to the filter (62) and the inlet from the filter (63) .

Connect an in-line flow meter to the case drain port (52) .

Purge all air from the suction line. Loosen the suction hose at the pump until oil leaks from the connection. Tighten the suction hose.

Fill the pump case with oil before rotating. Pour oil directly into a case drain port (52) until the case is full.

Connect a power supply to the solenoid (58) in order to operate the solenoid valve. Refer to illustration 13 for the proper way to connect the power supply to the solenoid (58). The power supply should be able to deliver 0 mA to 1.5 A with an infinite setting in that range.

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 the rotation of the test bench for proper direction.

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 in the test bench should be ISO 16/13 or better. 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)

Show/hide table




Illustration 14	g01126362
EDC Current Versus Pump Flow

The following steps verify the operation of the charge pump and the operation of the charge relief valve.
1. Start rotating the pump according to Step 1.a of the test specifications for several minutes in order to bring the oil to operating temperature. 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.
1. Increase the pump input RPM to the value in Step 1.b of the test specifications. Check the gauge port for the charge pressure (64). Compare the actual charge pressure with the value in Step 1.b of the test specifications. If the charge pressure is not within the test specifications, adjust the charge relief valve. Remove the plug for the charge relief valve (61) in order to adjust the shims. Add shims to the charge relief valve (61) in order to increase the charge pressure. Remove shims from the charge relief valve (61) in order to decrease the charge pressure.

The following steps verify the operation of the electronic displacement control and the initial point of pump stroke.
1. Connect a hose between the gauge ports for the servo (55) in order to equalize servo pressure on each side of the stroking servo. Connect 8T-0860 Pressure gauge into the gauge ports for system pressure (50). Loosen the locknut for the adjustment screw for pump neutral (54) in order to adjust the pump neutral. Increase the load valve value to allow an increase in discharge pressure. Turn the set screw (54) until the gauge readings are equal. Turn the set screw (54) clockwise until there is a pressure increase in one of the pressure gauges. Record the position of the wrench now. Turn the set screw (54) counterclockwise until there is a pressure increase on the other pressure gauge. Record the position of the wrench again. Turn the set screw (54) clockwise to the halfway point between the two previous points.
1. Connect 8T-0855 Pressure gauges into the servo gauge ports (55). Loosen the locknut on the adjustment screw for the control neutral (57) in order to adjust the control neutral. Turn the set screw (57) until the gauges are equal. Turn the set screw (57) clockwise until there is a pressure increase in one of the pressure gauges. Record the position of the wrench now. Turn the set screw (57) counterclockwise until there is a pressure increase on the other pressure gauge. Record the position of the wrench again. Turn the set screw (57) clockwise to the halfway point between the two previous points.
1. Slowly increase the input RPM and the current to the solenoid to the values in Step 2.c of the test specifications. This point is the beginning of the pump stroke. Both directions of operation for the pump must be tested. Some flow meters may not be able to read discharge flows at the initial or low flow rates. Slowly increase the solenoid current until the flow meter can read the discharge flow. Increase the discharge pressure to 3450 kPa (500 psi). Remove the solenoid current to the solenoid in order to ensure that the pump is not flowing. Slowly increase the solenoid current at a steady rate. Visually check that discharge pressure until the pressure starts to rise above the charge pressure. This point is the initial point of pump stroke.

Slowly increase the input RPM according to Step 3 of the test specifications. Slowly increase the current to the solenoid to the value in Step 3 in the test specifications. The pump must be operated in both directions in order to verify operation in either direction. Inspect the pump if the discharge flow does not match the value in Step 3 of the test specifications.

Slowly increase the pump discharge pressure to the value in Step 4 of the test specifications. Measure pump leakage now. 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. This value 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 "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.

Show/hide table

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

Show/hide table

Table 2
Part Number	110-8045
Pump Rotation	CW
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	18900 (2741)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	41 (11)	41 (11)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						6 (1.5)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)

Show/hide table

^( 1 )

Discharge pressure equals charge pressure.

Show/hide table

Table 3
Part Number	116-6122
Pump Rotation	CCW
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	18900 (2741)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	41 (11)	41 (11)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						6 (1.5)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)

Show/hide table

^( 1 )

Discharge pressure equals charge pressure

Show/hide table

Table 4
Part Number	190-8792
Pump Rotation	CCW
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	300	800	800
Discharge Pressure kPa (psi)	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	15750 (2284)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	82 (21.5)	82 (21.5)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						8 (2)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)

Show/hide table

^( 1 )

Discharge pressure equals charge pressure

Show/hide table

Table 5
Part Number	199-5718
Pump Rotation	CCW
Front Pump
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	31050 (4500)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	102 (27)	102 (27)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						8 (2)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)
Rear Pump
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	29250 (4241)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	82 (21.5)	82 (21.5)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						8 (2)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)

Show/hide table

^( 1 )

Discharge pressure equals charge pressure

Show/hide table

Table 6
Part Number	230-7967
Pump Rotation	CW
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	18900 (2741)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	41 (11)	41 (11)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						6 (1.5)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)

Show/hide table

^( 1 )

Discharge pressure equals charge pressure.

Show/hide table

Table 7
Part Number	230-9382
Pump Rotation	CCW
Front Pump
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	32400 (4700)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	82 (21.5)	82 (21.5)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						8 (2)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)
Rear Pump
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	32400 (4700)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	82 (21.5)	82 (21.5)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						8 (2)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)

Show/hide table

^( 1 )

Discharge pressure equals charge pressure

Show/hide table

Table 8
Part Number	230-9383
Pump Rotation	CCW
Front Pump
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	32400 (4700)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	82 (21.5)	82 (21.5)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						8 (2)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)
Rear Pump
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	2000 (290) ⁽¹⁾	32400 (4700)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	82 (21.5)	82 (21.5)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						8 (2)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)	2000 (290)

Show/hide table

^( 1 )

Discharge pressure equals charge pressure

Show/hide table

Table 9
Part Number	243-4175
Pump Rotation	CCW
Step	1a	1b	2a	2b	2c	3	4
RPM	500	1500	1500	1500	1500	2000	2000
Solenoid Current mA	0	0	0	0	14 ± 5	85 ± 14	85 ± 14
Discharge Pressure kPa (psi)	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	1400 (203) ⁽¹⁾	18900 (2741)
Discharge Flow lpm (gpm)	0	0	0	0	1 (.26)	41 (11)	41 (11)
Pump Loss lpm (gpm)	Subtract the actual measured discharge flow in Step 4 from the actual discharge flow in Step 3. This value is the Total Loss.						6 (1.5)
Charge Pump Flow lpm (gpm)	6 (1.5)	17 (4.5)	17 (4.5)	17 (4.5)	17 (4.5)	22 (6)	22 (6)
Charge Relief Valve kPa (psi)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)	1400 (203)

Show/hide table

^( 1 )

Discharge pressure equals charge pressure.

Test Bench Tooling

Show/hide table

Table 10
Part Number	Mounting Plate	Drive Adapter	Suction Port	Discharge Port	Case Drain
110-8045	1U-9127	1U-9833	1 5/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR
116-6122	1U-9127	265-3895	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR
190-8792	1U-9127	4C-4088	1 5/16-12 STOR	1 1/16-12 STOR	1 5/16-12 STOR
199-5718	1U-9127	1U-9842	1 5/16-12 STOR	1 5/16-12 STOR	1 5/16-12 STOR
230-7967	1U-9127	4C-4088	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR
230-9382	1U-9127	1U-9842	1 5/16-12 STOR	1 5/16-12 STOR	1 5/16-12 STOR
230-9383	1U-9127	1U-9842	1 5/16-12 STOR	1 5/16-12 STOR	1 5/16-12 STOR
243-4175	1U-9127	4C-4088	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR