Bench Test Procedure for Hydraulic Piston Pumps {5070} Caterpillar

Pipelayer

PL61 (S/N: WGS1-UP)

Track-Type Loader

953D (S/N: LBP1-UP)

963D (S/N: LCS1-UP)

963K (S/N: LBL1-UP)

Track-Type Tractor

D3K (S/N: JTD1-UP; FFF1-UP; LLL1-UP)

D3K2 (S/N: GAE1-UP; KFF1-UP)

D4K (S/N: MMM1-UP; RRR1-UP)

D4K2 (S/N: KMM1-UP; KRR1-UP)

D5K (S/N: JLF1-UP; WWW1-UP; YYY1-UP)

D5K2 (S/N: TRF1-UP; KWW1-UP; KYY1-UP)

D6K (S/N: DHA1-UP; NCF1-UP; HMG1-UP; FBH1-UP)

D6K2 (S/N: RPR1-UP; WMR1-UP; RST1-UP)

Vibratory Soil Compactor

CP74B (S/N: 4911-UP; 5121-UP; P741-UP; 7441-UP; CP71-UP; L7B1-UP; M7B1-UP)

CP76 (S/N: C7L1-UP; JCP1-UP)

CP76B (S/N: J761-UP)

CS74B (S/N: 4901-UP; 4411-UP; C741-UP; CS41-UP; LCB1-UP; E7E1-UP; B7M1-UP)

CS76 XT (S/N: JCS1-UP; CYX1-UP)

CS76B (S/N: 4921-UP; CB71-UP; L9H1-UP)

CS78B (S/N: 4431-UP; 4931-UP; 5131-UP; M781-UP; S781-UP; L8C1-UP; M8M1-UP)

CS79B (S/N: CM71-UP; C791-UP)

Introduction

Table 1

Revision	Summary of Changes in REHS9393
03	Added new Vibratory Soil Compactor serial number prefix J76 to document.
02	Rewrote Step 8.
01	Removed Engine serial number prefix EMS from document. Added new Vibratory Soil Compactor serial number prefixes B7M, C74, 513, M78, 512, and CP7 to document.
00	New document.

© 2016 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. 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 technical questions when using this document, work with your Dealer Technical Communicator (TC).

To report suspected errors, inaccuracies, or suggestions regarding the document, submit a form for feedback in the Service Information System (SIS Web) interface.

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 1	g02139237

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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.

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

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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) 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 2	g01140178
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 3	g01140179
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 4	g01140180
Connections for the test bench (26) Flow meter 1 loop and flow meter 2 loop (27) Oil supply

Illustration 5	g01140183
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 6	g01140185
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

Pump Illustrations

Illustration 7	g03858773
Port locations for pumps with opposing discharge ports and (Y) control pressure port (77). (49) Gauge port for stroking pressure (50) Connector for electrical solenoid (51) Adjustment screw for hydraulic zero (52) Suction port for charge pump (53) Pump discharge port (54) Pump discharge port (55) Case drain port (56) Connector for electrical solenoid (57) Adjustment screw for mechanical zero (58) Gauge port for stroking pressure (59) Return port for charge pump (60) Adjustment screw for high-pressure cut (61) Discharge port for charge pump (62) Gauge port for discharge pressure (63) Gauge port for discharge pressure (64) Gauge port for charge pressure (77) (Y) control pressure port

Illustration 8	g03858465
Port locations for pumps with adjacent discharge ports. (49) Gauge port for stroking pressure (50) Connector for electrical solenoid (51) Adjustment screw for hydraulic zero (53) Pump discharge port (54) Pump discharge port (55) Case drain port (56) Connector for electrical solenoid (57) Adjustment screw for mechanical zero (58) Gauge port for stroking pressure (60) Adjustment screw for high-pressure cut (62) Gauge port for discharge pressure (63) Gauge port for discharge pressure (64) Gauge port for charge pressure

Illustration 9	g03858467
Port locations for pumps with opposing discharge ports and (Y) control pressure port (77). (49) Gauge port for stroking pressure (50) Connector for electrical solenoid (51) Adjustment screw for hydraulic zero (52) Suction port for charge pump (53) Pump discharge port (54) Pump discharge port (55) Case drain port (56) Connector for electrical solenoid (57) Adjustment screw for mechanical zero (58) Gauge port for stroking pressure (59) Return port for charge pump (60) Adjustment screw for high-pressure cut (61) Discharge port for charge pump (62) Gauge port for discharge pressure (63) Gauge port for discharge pressure (64) Gauge port for charge pressure (77) (Y) control pressure port

Illustration 10	g03858853
Port locations for pumps with opposing discharge ports. (49) Gauge port for stroking pressure (50) Connector for electrical solenoid (51) Adjustment screw for hydraulic zero (53) Pump discharge port (54) Pump discharge port (55) Case drain port (56) Connector for electrical solenoid (57) Adjustment screw for mechanical zero (58) Gauge port for stroking pressure (60) Adjustment screw for high-pressure cut (62) Gauge port for discharge pressure (63) Gauge port for discharge pressure (64) Gauge port for charge pressure

9U-5902 9U-59029U-5902 9U-5902 9U-5902 Rectifier Block

Illustration 11	g01435070
9U-5902 Rectifier Block Connections

Illustration 12	g01348031
9U-5902 Rectifier Block Schematic (66) High-pressure port (67) High-pressure outlet (68) High-pressure port (69) Low-pressure inlet

9U-5893 9U-58939U-5893 9U-5893 9U-5893 Heat Exchanger

Illustration 13	g01348036
9U-5893 Heat Exchanger Connections (70) Inlet from flow meter loop (71) Outlet "to rectifier block" (72) Water inlet (73) Water outlet

198-4240198-4240198-4240198-4240 198-4240 Electric Pressure Gauge Group

Illustration 14	g01348034
198-4240 Electric Pressure Gauge Group Connections (74) Pressure gauge (75) Red transducer 34500 kPa (5000 psi) (76) Blue transducer 3450 kPa (500 psi)

Note: The accuracy of the mechanical zero position and the hydraulic zero position is crucial. The use of the 198-4240 Electric Pressure Gauge Group is Highly recommended.

Pump Setup

Note: A power supply is required to operate the solenoid. The power supply should be capable of delivering 0 mA to 1.2 A with an infinite setting in that range.

1. Install pressure taps in the following test ports:

   (49) Gauge port for stroking pressure

   (58) Gauge port for stroking pressure

   (62) Gauge port for discharge pressure

   (63) Gauge port for discharge pressure

2. Connect power supply to the connector for electric solenoid (50) or (56).

3. Connect pump discharge ports (53) and (54) to the 9U-5902 Rectifier Block high-pressure ports (66) and (68).

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

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

6. Connect the 9U-5893 Heat Exchanger outlet (71) to the low-pressure return (69) on the 9U-5902 Rectifier Block.

7. Connect the red transducer 34500 kPa (5000 psi) (75) or 8T-0860 Pressure Gauge to the pump's gauge ports for discharge pressure (62) and (63) .

8. Some pumps do not have internal charge pumps. Refer to the Test Specifications to verify if the pump that is being tested has an internal charge pump or uses an external charge pump. For pumps with an internal charge pump, connect suction port (52) to the test bench oil supply. Also connect discharge port for charge port (61) to return port for charge pump (59). Pumps without an internal charge pump will require auxiliary charge flow from the test bench to be supplied to the return port for charge pump (59).

9. Some pumps require auxiliary pressure supplied to (Y) control pressure port (77). In this case, connect a hose from the auxiliary pressure supply on the test bench to (Y) control pressure port (77) on the pump. Refer to the specifications table for your pump in the Test Specifications section of this document to determine if auxiliary pressure is required. If there is no mention of (Y) control pressure in the specifications table, the pump will not require auxiliary pressure. Refer to Illustration 7 for locating the (Y) control pressure port (77) if necessary.

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

11. Fill the pump case with oil. Pour oil directly into case drain port (55) until the case is full. Direct flow from case drain port (55) to test bench reservoir.

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

Adjustment for Mechanical Zero Position

1. Turn the load control on the test bench completely clockwise to control the pump discharge pressure. Start rotating the pump at the value in Step 1 of the Test Specifications. Be sure to sustain charge pump flow to port (59) in Steps 1 through 5 of the Adjustment for Mechanical Zero. Vent the ports for the stroking pressure (49) and (58) to the atmosphere. This will equalize the pressure on the servo spool. Install pressure gauges on ports (62) and (63). Turn the load control on the test bench completely clockwise to control the pump discharge pressure. If the mechanical zero adjustment is incorrect, a discharge pressure higher than the charge pressure may occur.

   Note: If the mechanical zero is unable to be set correctly, the hydraulic zero may be too far out of adjustment. In this case it will be necessary to set the hydraulic zero within 300 kPa (43.5 psi) using the procedure "Adjustment for Hydraulic Zero Position". Try to set the mechanical zero again. This may need to repeated several times to correctly achieve the mechanical zero adjustment. After the mechanical zero is set, proceed to "Adjustment for Hydraulic Zero Position". For the final hydraulic zero adjustment, set the hydraulic zero within 21 kPa (3 psi)

   Note: Some pumps require auxiliary pressure supplied to (Y) control pressure port (77). Refer to the specifications table for your pump in the Test Specifications section of this document to determine if auxiliary pressure is required. If there is no mention of (Y) control pressure in the specifications table, the pump will not require auxiliary pressure. Refer to Illustration 7 for locating the (Y) control pressure port (77) if necessary.

2. Turn the adjustment screw for the mechanical centering (57) 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 B (62) or gauge port for the system pressure A (63). Mark the position of the adjustment screw for the mechanical centering (57).

3. Turn adjustment screw for the mechanical centering (57) counterclockwise until pressure increases on gauge ports (62) or (63). Mark the position of the adjustment screw for the mechanical centering (57).

4. A mark should be placed halfway between position one and position two. Turn the adjustment screw for the mechanical centering (57) to the midpoint of both marks. There should be less than a 34.5 kPa (5 psi) pressure differential between pump gauge ports (62) and (63).

5. 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 (62) and (63).

Adjustment for Hydraulic Zero Position

1. Connect two blue transducers 3450 (500 psi) or connect two 6000 kPa (870 psi) 8T-0856 Pressure Gauges into both gauge ports for stroking pressure (49) and (58).

2. Start rotating the pump to the value listed in Step 1 of the Test Specifications. Turn the load control for the pump discharge pressure clockwise. This will allow pump discharge pressure to increase in the following steps.

   Note: Increase signal current to solenoid (65) until braking valve is activated.

   Note: Some pumps require auxiliary pressure supplied to (Y) control pressure port (77). Refer to the specifications table for your pump in the Test Specifications section of this document to determine if auxiliary pressure is required. If there is no mention of (Y) control pressure in the specifications table, the pump will not require auxiliary pressure. Refer to Illustration 7 for locating the (Y) control pressure port (77) if necessary.

3. Adjust the adjustment screw for hydraulic zero (51) until the pressure at the gauge ports for the stroking pressure (49) and (58) differ by less than 21 kPa (3 psi).

   Note: Do not turn the adjustment screw for the hydraulic zero (51) more than 90 degrees in either direction.

4. Turn the load control for the pump discharge pressure counterclockwise. This will allow pump discharge pressure to decrease. Stop rotating the pump and allow pump pressure to dissipate. Disconnect the pressure gauges that are connected to the gauge ports for stroking pressure (49) and (58).

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)

Illustration 15	g01143449

Illustration 16	g01143458

1. Start rotating the pump according to the RPM in Step 1 of the Test Specifications. Pumps without a charge pump will require auxiliary charge flow according to the value in Step 1 of the Test Specifications. Verify the flow rates and listen for abnormal noise. Verify that all connections are secure. Verify that all connections are tight. Check for leaks around shaft seals. Check for leaks around control valves. Check the gauge port for the charge pressure (52). Compare the actual charge pressure with the value in Step 1 of the Test Specifications. If the charge pressure is not within the Test Specifications adjust the charge relief valve. Adjust the charge relief valve by turning the adjustment screw (60) clockwise or counterclockwise accordingly. Run the pump for at least five minutes to raise the temperature of the oil and purge the system of air.

   Note: Increase signal current to solenoid (65) until braking valve is activated.

   Note: The pump has two separate solenoids. Test one solenoid at a time then repeat steps 2 through 4 of the Test Procedure to test the other solenoid.

   Note: Some pumps require auxiliary pressure supplied to (Y) control pressure port (77). Refer to the specifications table for your pump in the Test Specifications section of this document to determine if auxiliary pressure is required. If there is no mention of (Y) control pressure in the specifications table, the pump will not require auxiliary pressure. Refer to Illustration 7 for locating the (Y) control pressure port (77) if necessary.

2. Slowly increase the pump RPM to the value in Step 2 of the Test Specifications. Increase the signal current to solenoid (50) or (56) according to the value in Step 2 of the Test Specifications. This is the point of upstroke of the pump. The pump operation or the control of the signal pressure may not be operating properly if the actual discharge flow is not correct.

   Note: Some flow meters may not be able to read discharge flows at this level. Slowly increase signal current to a value that is higher than the value in Step 2 of the Test Specifications if the flow meter does not register the flow. Continue until the flow begins to register.

3. Increase the signal current to (50) or (56) to the value in Step 3 of the Test Specifications. The pump should be fully upstroked at this time. Record actual pump flow. The pump or the control for the proportional solenoid valve may not be mechanically feasible if the actual flow is not equal to the value in Step 3 of the Test Specifications.

4. Increase pump discharge pressure to the value in Step 4 of the Test Specifications. Measure pump leakage at this point. 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 of the Test Procedure from the discharge flow that was recorded in Step 3 of the Test Procedure to find the total loss.

   Example: Step 5 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.

Repeat Steps 2 through 4 of the Test Procedure by connecting the power supply to the opposite connector for electrical solenoid (50) or (56).

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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. Cap all ports or plug all ports.

Note: Crossover relief valves are not preset from factory. If crossover relief valves are replaced, they must be adjusted while installed on the machine. See Testing and Adjusting manual for specific machine.

Test Specifications

Table 3

Part Number	________________________
Rotation	________________________
Step	1	2	3	4
RPM	_______________	_______________	_______________	_______________
Signal Current mA	_______________	_______________	_______________	_______________
Discharge Pressure kPa (psi)	_______________	_______________	_______________	_______________
Discharge Flow liter per minute (gpm)	_______________	_______________	_______________	_______________
Pump Loss Efficiency liter per minute(gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			_______________
Charge Pressure kPa (psi)	_______________	_______________	_______________	_______________
Auxiliary Charge Flow liter per minute (gpm)	_______________	_______________	_______________	_______________

Table 4

Part Number	243-6637
See Part Numbers 261-3629 and 261-3630

Table 5

Part Number	254-9099
Double pump made of 289-6388 (see this document) and 289-6389 (see this document)

Table 6

Part Number	254-9100
Double pump made of 289-6388 (see this document) and 289-6390 (see this document)

Table 7

Part Number	261-3629
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	3100 (450)(1)	3100 (450)(1)	3100 (450)(1)	23100 (3350)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	90 (23.8)	90 (23.8) Max
Pump Loss Efficiency liter per minute(gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			3.6 (.95)
Charge Pressure kPa (psi)	3100 (450)	3100 (450)	3100 (450)	3100 (450)
Auxiliary Charge Flow liter per minute (gpm)	19.6 (5.1) (External)	19.6 (5.1) (External)	19.6 (5.1) (External)	19.6 (5.1) (External)

(1)	Discharge pressure equals charge pressure

Table 8

Part Number	261-3630
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2500 (363)(1)	2500 (363)(1)	2500 (363)(1)	25000 (3625)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	90 (23.7)	90 (23.7) Max
Pump Loss Efficiency liter per minute(gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			3.6 (.95)
Charge Pressure kPa (psi)	2500 (363)	2500 (363)	2500 (363)	2500 (363)
Charge Flow liter per minute (gpm)	15.5 (4.1) (Internal)	19.3 (5.1) (Internal)	19.3 (5.1) (Internal)	19.3 (5.1) (Internal)

(1)	Discharge pressure equals charge pressure

Table 9

Part Number	261-3631
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	3100 (450)(1)	3100 (450)(1)	3100 (450)(1)	25000 (3625)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	125 (32.9)	125 (32.9) Max
Pump Loss Efficiency liter per minute(gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			5.0 (1.3)
Charge Pressure kPa (psi)	3100 (450)	3100 (450)	3100 (450)	3100 (450)
Charge Flow liter per minute (gpm)	20 (5.3) (External)	25 (6.6) (External)	25 (6.6) (External)	25 (6.6) (External)

(1)	Discharge pressure equals charge pressure

Table 10

Part Number	261-3632
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2500 (363)(1)	2500 (363)(1)	2500 (363)(1)	25000 (3625)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	125 (32.9)	125 (32.9) Max
Pump Loss Efficiency liter per minute(gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			5.0 (1.3)
Charge Pressure kPa (psi)	2500 (363)	2500 (363)	2500 (363)	2500 (363)
Charge Flow liter per minute (gpm)	22.8 (6.0) (Internal)	28.5 (7.5) (Internal)	28.5 (7.5) (Internal)	28.5 (7.5) (Internal)

(1)	Discharge pressure equals charge pressure

Table 11

Part Number	264-6027
Double pump made of 261-3631 (see this document) and 261-3632 (see this document)

Table 12

Part Number	289-6385
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2650 (385)(1)	2650 (385)(1)	2650 (385)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	56 (14.8)	56 (14.8)
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute(gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			2.24 (0.6)
Charge Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Charge Flow liter per minute (gpm)	12.1 (3.19) (Internal)	15.1 (4) (Internal)	15.1 (4) (Internal)	15.1 (4) (Internal)

(1)	Discharge pressure equals charge pressure

Table 13

Part Number	289-6386
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2650 (385)(1)	2650 (385)(1)	2650 (385)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	56 (14.8)	56 (14.8)
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute(gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			2.24 (0.6)
Charge Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Charge Flow liter per minute (gpm)	12.1 (3.19) (Internal)	15.1 (4) (Internal)	15.1 (4) (Internal)	15.1 (4) (Internal)

(1)	Discharge pressure equals charge pressure

Table 14

Part Number	289-6387
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2650 (385)(1)	2650 (385)(1)	2650 (385)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	56(14.8)	56(14.8)
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			2.24 (.6)
Charge Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Auxiliary Charge Flow liter per minute (gpm)	12 (3.2) (Internal)	15 (4) (Internal)	15 (4) (Internal)	15 (4) (Internal)

(1)	Discharge pressure equals charge pressure

Table 15

Part Number	289-6388
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2650 (385)(1)	2650 (385)(1)	2650 (385)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	72 (19)	72 (19)
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			3.8 (1)
Charge Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Charge Flow liter per minute (gpm)	16 (4.1) (Internal)	20 (5.2) (Internal)	20 (5.2) (Internal)	20 (5.2) (Internal)

(1)	Discharge pressure equals charge pressure

Table 16

Part Number	289-6389
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2650 (385)(1)	2650 (385)(1)	2650 (385)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	72 (19)	72 (19)
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			3.8 (1)
Charge Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Charge Flow liter per minute (gpm)	16 (4.1) (Internal)	20 (5.2) (Internal)	20 (5.2) (Internal)	20 (5.2) (Internal)

(1)	Discharge pressure equals charge pressure

Table 17

Part Number	289-6390
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2650(385) (1)	2650(385)(1)	2650(385)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (.026)	71 (19)	71 (19) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			2.84 (.75)
Charge Pressure kPa (psi)	2650(385)	2650(385)	2650(385)	2650(385)
Auxiliary Charge Flow liter per minute (gpm)	16 (4.1) (Internal)	20 (5.2) (Internal)	20 (5.2) (Internal)	20 (5.2) (Internal)

(1)	Discharge pressure equals charge pressure

Table 18

Part Number	295-7855
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	400	1200	1200
Discharge Pressure kPa (psi)	2000(290)(1)	2000(290)(1)	2000(290)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (.026)	56 (14.8)	56 (14.8)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			2.24 (0.6)
Charge Pressure kPa (psi)	2000(290)	2000(290)	2000(290)	2000(290)
Auxiliary Charge Flow liter per minute (gpm)	11.6(3.1)(External)	11.6 (3.1) (External)	11.6 (3.1) (External)	11.6 (3.1) (External)

(1)	Discharge pressure equals charge pressure

Table 19

Part Number	341-7650
Double pump made of 358-4983 (see this document) and 358-4985 (see this document)

Table 20

Part Number	341-7652
Double pump made of 358-4983 (see this document) and 358-4987 (see this document)

Table 21

Part Number	341-7655
Double pump made of 358-4989 (see this document) and 358-4990 (see this document)

Table 22

Part Number	341-7657
Double pump made of 358-4989 (see this document) and 358-4991 (see this document)

Table 23

Part Number	351-8908
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2000 (290)(1)	2000 (290)(1)	2000 (290)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	56 (14.7)	56 (14.7) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			2.2 (0.6)
Charge Pressure kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)
Charge Flow liter per minute (gpm)	15 (4) (External)	15 (4) (External)	15 (4) (External)	15 (4) (External)

(1)	Discharge pressure equals charge pressure

Table 24

Part Number	358-4983
Rotation	Clockwise
Step	1	2	3	4
RPM	800	2000	2000	2000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2200 (319)(1)	2200 (319)(1)	2200 (319)(1)	23000 (3336)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	112 (29.4)	112 (29.4) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			5 (1.3)
Charge Pressure kPa (psi)	2200 (319)	2200 (319)	2200 (319)	2200 (319)
Charge Flow liter per minute (gpm)	12 (3.2) (Internal)	30 (8) (Internal)	30 (8) (Internal)	30 (8) (Internal)

(1)	Discharge pressure equals charge pressure

Table 25

Part Number	358-4985
Rotation	Clockwise
Step	1	2	3	4
RPM	800	2000	2000	2000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2200 (319)(1)	2200 (319)(1)	2200 (319)(1)	23000 (3336)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	112 (29.4)	112 (29.4) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			5 (1.3)
Charge Pressure kPa (psi)	2200 (319)	2200 (319)	2200 (319)	2200 (319)
Charge Flow liter per minute (gpm)	12 (3.2) (Internal)	30 (8) (Internal)	30 (8) (Internal)	30 (8) (Internal)

(1)	Discharge pressure equals charge pressure

Table 26

Part Number	358-4987
Rotation	Clockwise
Step	1	2	3	4
RPM	800	2000	2000	2000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2200 (319)(1)	2200 (319)(1)	2200 (319)(1)	23000 (3336)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	112 (29.4)	112 (29.4) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			5 (1.3)
Charge Pressure kPa (psi)	2200 (319)	2200 (319)	2200 (319)	2200 (319)
Charge Flow liter per minute (gpm)	12 (3.2) (Internal)	30 (8) (Internal)	30 (8) (Internal)	30 (8) (Internal)

(1)	Discharge pressure equals charge pressure

Table 27

Part Number	358-4989
Rotation	Clockwise
Step	1	2	3	4
RPM	800	2000	2000	2000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	1700 (247)(1)	1700 (247)(1)	1700 (247)(1)	23000 (3336)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	142 (37.3)	142 (37.3) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			6 (1.6)
Charge Pressure kPa (psi)	1700 (247)	1700 (247)	1700 (247)	1700 (247)
Charge Flow liter per minute (gpm)	15.7 (4.1) (External)	39 (10.3) (External)	39 (10.3) (External)	39 (10.3) (External)

(1)	Discharge pressure equals charge pressure

Table 28

Part Number	358-4990
Rotation	Clockwise
Step	1	2	3	4
RPM	800	2000	2000	2000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	1700 (247)(1)	1700 (247)(1)	1700 (247)(1)	23000 (3336)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	142 (37.3)	142 (37.3) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			6 (1.6)
Charge Pressure kPa (psi)	1700 (247)	1700 (247)	1700 (247)	1700 (247)
Charge Flow liter per minute (gpm)	15.7 (4.1) (External)	39 (10.3) (External)	39 (10.3) (External)	39 (10.3) (External)

(1)	Discharge pressure equals charge pressure

Table 29

Part Number	358-4991
Rotation	Clockwise
Step	1	2	3	4
RPM	800	2000	2000	2000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	1700 (247)(1)	1700 (247)(1)	1700 (247)(1)	23000 (3336)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	142 (37.3)	142 (37.3) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			6 (1.6)
Charge Pressure kPa (psi)	1700 (247)	1700 (247)	1700 (247)	1700 (247)
Charge Flow liter per minute (gpm)	15.7 (4.1) (External)	39 (10.3) (External)	39 (10.3) (External)	39 (10.3) (External)

(1)	Discharge pressure equals charge pressure

Table 30

Part Number	389-8424
Rotation	Clockwise
Step	1	2	3	4
RPM	800	1000	1000	1000
Signal Current mA	0	500	1500	1500
Discharge Pressure kPa (psi)	2000 (290)(1)	2000 (290)(1)	2000 (290)(1)	20000 (2900)
Discharge Flow liter per minute (gpm)	0	1 (0.26)	56 (14.7)	56 (14.7) Max
(Y) Control Pressure kPa (psi)	2650 (385)	2650 (385)	2650 (385)	2650 (385)
Pump Loss Efficiency liter per minute (gpm)	Subtract the actual Step 4 Discharge Flow from the actual Step 3 Discharge Flow. This is the Total Loss.			2.2 (0.6)
Charge Pressure kPa (psi)	2000 (290)	2000 (290)	2000 (290)	2000 (290)
Charge Flow liter per minute (gpm)	15 (4) (External)	15 (4) (External)	15 (4) (External)	15 (4) (External)

(1)	Discharge pressure equals charge pressure

Test Bench Tooling

Table 31

Tooling
Pump Number	243-6637	254-9099	254-9100	261-3629
Gauge Port for Charge Pressure (64)	Double pump made of 261-3629 (see this document) and 261-3630 (see this document)	Double pump made of 289-6388 (see this document) and 289-6389 (see this document)	Double pump made of 289-6388 (see this document) and 289-6390 (see this document)	9/16-18STOR
Gauge Port for Stroking Pressure (58)				7/16-20 STOR
Pump Discharge Gauge Ports				7/16-20 STOR
Case Drain Port				1-1/16-12STOR
Charge Supply				-
Charge Pump Discharge Port				-
Charge Pump Return Port				3/4-16STOR
Pump Discharge Ports				1P-5766
Flange Adapter				9U-7439
Mounting Plate				131-8683
Drive Adapter				1U-9835

Table 32

Tooling
Pump Number	261-3630	261-3631	261-3632	264-6027
Gauge Port for Charge Pressure (64)	9/16-18STOR	7/8-14 STOR	7/8-14 STOR	Double pump made of 261-3631 (see this document) and 261-3632 (see this document)
Gauge Port for Stroking Pressure (58)	7/16-20STOR	9/16-18 STOR	9/16-18 STOR
Pump Discharge Gauge Ports	7/16-20STOR	7/16-20 STOR	7/16-20 STOR
Case Drain Port	1-1/16-12STOR	1 5/16-12 STOR	1 5/16-12 STOR
Charge Supply	-	1 7/8-12 STOR	1 7/8-12 STOR
Charge Pump Discharge Port	1-1/16-12STOR	1 1/16-12 STOR
Charge Pump Return Port	7/8-14STOR	1 5/16-12 STOR
Pump Discharge Ports	1P-5766	1P-5767	1P-5767
Flange Adapter	9U-7439	9U-7440	9U-7440
Mounting Plate	131-8683	1U-9129	1U-9129
Drive Adapter	1U-9835	1U-9835	1U-9835

Table 33

Tooling
Pump Number	289-6385	289-6386	289-6387	289-6388	289-6389	289-6390
Gauge Port for Charge Pressure (64)	9/16-18 STOR	9/16-18 STOR	9/16-18 STOR	3/4-16 STOR	3/4-16 STOR	3/4-16 STOR
Gauge Port for Stroking Pressure (58)	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR
Pump Discharge Gauge Ports	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR
Case Drain Port	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR
Charge Pump Discharge Port	9/16-18 STOR	9/16-18 STOR	9/16-18 STOR	7/8-14 STOR	7/8-14 STOR	9/16-18 STOR
Charge Pump Return Port	3/4-16STOR	3/4-16STOR	3/4-16STOR	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR
Pump Discharge Ports	1P-5765	1P-5765	1P-5765	1P-5766	1P-5766	1P-5766
Flange Adapter	9U-7438	9U-7438	9U-7438	9U-7439	9U-7439	9U-7439
Mounting Plate	1U-9128	1U-9128	1U-9128	1U-9128	1U-9128	1U-9128
Drive Adapter	133-2329	133-2329	133-2329	133-2329	133-2329	133-2329

Table 34

Tooling
Pump Number	295-7855	341-7650	341-7652	341-7655	341-7657
Gauge Port for Charge Pressure (64)	3/4-16 STOR	Double pump made of 358-4983 (see this document) and 358-4985 (see this document)	Double pump made of 358-4983 (see this document) and 358-4987 (see this document)	Double pump made of 358-4989 (see this document) and 358-4990 (see this document)	Double pump made of 358-4989 (see this document) and 358-4991 (see this document)
Gauge Port for Stroking Pressure (58)	7/16-20 STOR
Pump Discharge Gauge Ports	7/16-20 STOR
Case Drain Port	1 1/16-12 STOR
Charge Supply	-
Charge Pump Discharge Port	9/16-18 STOR
Charge Pump Return Port	1 1/16-12 STOR
Pump Discharge Ports	1 1/16-12 STOR
Flange Adapter	-
Mounting Plate	1U-9128
Drive Adapter	1U-9834

Table 35

Tooling
Pump Number	351-8908	358-4983	358-4985	358-4987	358-4989	358-4990	358-4991
Gauge Port for Charge Pressure (64)	9/16-18 STOR	9/16-18 STOR	9/16-18 STOR	9/16-18 STOR	7/8-14 STOR	7/8-14 STOR	7/8-14 STOR
Gauge Port for Stroking Pressure (58)	7/16-20 STOR	7/16-20 STOR	7/16-20 STOR	7/16-20STOR	7/16-20STOR	7/16-20STOR	7/16-20 STOR
Pump Discharge Gauge Ports	7/16-20 STOR	7/16-20 STOR	9/16-18STOR	9/16-18 STOR	9/16-18 STOR	9/16-18 STOR	9/16-18 STOR
Case Drain Port	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12 STOR	1 1/16-12STOR	1 1/16-12STOR	1 1/16-12STOR	1 1/16-12 STOR
Charge Supply	3/4-16 STOR	1 5/16-12STOR	1 5/16-12STOR	1 5/16-12STOR	1 5/8-12 STOR	1 5/8-12 STOR	1 5/8-12 STOR
Charge Pump Discharge Port	-	3/4-16 STOR	7/8-14 STOR	7/8-14STOR	7/8-14STOR	7/8-14STOR	7/8-14STOR
Charge Pump Return Port	-	3/4-16 STOR	7/8-14 STOR	7/8-14STOR	7/8-14STOR	7/8-14STOR	7/8-14STOR
Pump Discharge Ports	1 1/16-12 STOR	8T-9403	8T-9403	8T-9403	6V-0400	6V-0400	6V-0400
Flange Adapter	-	9U-7438	9U-7438	9U-7438	9U-7439	9U-7439	9U-7439
Mounting Plate	1U-9128	1U-9128	1U-9128	1U-9128	1U-9128	1U-9128	1U-9128
Drive Adapter	1U-9834	133-2329	131-6452	131-6452	133-2329	1U-9834	1U-9834

Table 36

Tooling
Pump Number	389-8424
Gauge Port for Charge Pressure (64)	9/16-18 STOR
Gauge Port for Stroking Pressure (58)	7/16-20 STOR
Pump Discharge Gauge Ports	7/16-20 STOR
Case Drain Port	1 1/16-12 STOR
Charge Supply	3/4-16 STOR
Charge Pump Discharge Port	-
Charge Pump Return Port	-
Pump Discharge Ports	1 1/16-12 STOR
Flange Adapter	-
Mounting Plate	1U-9128
Drive Adapter	1U-9834