Bench Test Procedure for Hydraulic Piston Pumps {5070} Caterpillar


Bench Test Procedure for Hydraulic Piston Pumps {5070}

Usage:

365B L 4XZ
Excavator
330B (S/N: 8TR1-UP)
365B (S/N: AGD1-UP; CFJ1-UP; CTY1-UP; 4XZ1-UP; 9PZ1-UP)
365B Series II (S/N: BTH1-UP)
365BL (S/N: 9TZ1-UP)
365BL Series II (S/N: JMB1-UP; PEG1-UP; SDL1-UP; DER1-UP)
365C (S/N: ELC1-UP; GWC1-UP; MEM1-UP; FEN1-UP; PAR1-UP; MCS1-UP; MCY1-UP)
374D (S/N: PJA1-UP; PAP1-UP)
385B (S/N: MYA1-UP; RCD1-UP; BKF1-UP; FDL1-UP; ANS1-UP; CLS1-UP; BLY1-UP)
385C (S/N: EDA1-UP; MMA1-UP; KGB1-UP; KBC1-UP; SBE1-UP; T2E1-UP; T2F1-UP; KKK1-UP; EAM1-UP; JCM1-UP; WAW1-UP; MNZ1-UP)
390D (S/N: WAG1-UP; WAP1-UP; WBT1-UP)
5090B (S/N: CLD1-UP; SJY1-UP)
5110B (S/N: AAA1-UP)
Mining Truck
794 AC (S/N: HRT1-UP)
Off-Highway Truck/Tractor
793C (S/N: CBR1-UP)
793D (S/N: FDB1-UP)
794 AC (S/N: MN51-UP; MT51-UP)
795F AC (S/N: ERM1-UP)
795FAC XQ (S/N: SNT1-UP)
797 (S/N: 5YW1-UP)
797B (S/N: JSM1-UP)
797F (S/N: LAJ1-UP; WSP1-UP)
Wheel Tractor-Scraper
623G (S/N: DBC1-UP; CES1-UP; ARW1-UP)

Introduction

Table 1
Revision  Summary of Changes in REHS1527 
17  Added new Off-Highway Truck serial number prefix HRT to document. 
16  Updated part number 281-8284 Piston Pump Gp. in Table 20 
15  Added new Off-Highway Truck serial number prefix MT5 to document. 
14  Added new Off-Highway Truck serial number prefix MN5 to document. 

© 2019 Caterpillar All Rights Reserved. This guideline is for the use of Cat dealers only. Unauthorized use of this document or the proprietary processes therein without permission 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 questions or additional information concerning this guideline, submit a feedback form in the Service Information System web site. To address an urgent need, use the following to relay your request to Caterpillar Repair Process Engineering:

  • Cat dealer Technical Communicator

  • Dealer Solution Network

  • Caterpillar Technical Representative

  • Knowledge Network (online)

Canceled Part Numbers and Replaced Part Numbers

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

Safety



Illustration 1g02139237

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

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

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

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


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

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


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

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

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

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

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


Summary

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

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

References

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

Connections for the Caterpillar Hydraulic Test Center



Illustration 2g01063311
Connections for the Test Center
(1) Flow control for discharge
(2) "F3" flow meter inlet
(3) "F4" flow meter inlet
(4) Oil supply from the auxiliary pump
(5) "F3" 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 3g01063312
Control and Gauges for the Test Center
(13) Meter for speed and torque
(14) Gauge for signal pressure
(15) Control for signal pressure
(16) Pressure gauge for auxiliary pump
(17) Auxiliary pump flow
(18) "F3" discharge pressure gauge
(19) "F3" discharge flow
(20) "F4" discharge pressure gauge
(21) "F4" discharge flow
(22) Auxiliary pump flow control
(23) "F3" margin pressure
(24) "F3" Load control for discharge pressure
(25) "F4" Load control for discharge pressure

Connections for the Caterpillar Hydraulic Test Bench



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


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


Illustration 6g01063316
Control and Gauges for the Test Bench
(36) Auxiliary 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 7g01189733
Typical port locations, adjustments, and hydraulic schematic
(49) Adjustment screw for minimum angle
(50) Case drain port
(51) Discharge port
(52) Electrical connector for the solenoid
(53) Adjustment screw for high-pressure cut
(54) Suction port
(55) Adjustment screw for maximum angle

Pump Setup

  1. Mount the pump with the suction port (54) downward. Use an adapter to connect the pump to the test bench oil supply.

  2. Connect discharge port (51) to a flow meter on the test bench.

  3. Open the oil supply valve to fill the pump. Purge all air from the suction line before rotating the pump. Loosen the suction hose at the pump until oil leaks from the connection. Tighten the suction hose.

  4. Fill the pump case with oil. Pour oil directly into a case drain port (50) until the case is full.

  5. Connect a hose from the case drain port (50) to an in-line flow meter. Direct the oil from the flow meter back to the reservoir.

  6. Connect a power supply to the electrical connector for the solenoid (52) to operate the solenoid valve. The power supply should be able to deliver 0 mA to 1.5 mA with an infinite setting in that range.

  7. 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 in the test specifications according to your specific part number.

The hydraulic oil in the test bench should meet an ISO rating of 16/13. The oil in the test bench should be one of the following.

  • SAE 10W at 50 °C (122 °F) or

  • Mobil DTE-11 at 46 °C (115 °F)

Note: A small amount of current will need to be applied in order for oil to flow on pumps that begin at zero displacement.

  1. Start rotating the pump according to the RPM in Step 1 of the test specifications. Listen for abnormal noise. Verify that all the connections are not leaking. Check for leaks around shaft seals and control valves.

  2. Slowly increase the pump RPM according to Step 2 of the test specifications. Refer to the test specifications to verify the type of flow control. If the discharge flow of the pump does not match Step 2 of the test specifications, adjustment will be required. The pumps with positive flow control should be at minimum displacement. If the value is not within specifications, adjustment of the adjustment screw for minimum angle (49) will be required.

    Pumps with negative flow control should be at maximum displacement. If the value is not within specifications, adjustment of the adjustment screw for maximum angle (55) will be required.

  3. Apply current to the electrical connector for the solenoid (52) and load the pump according to Step 3 of the test specifications. Pump flow should begin to change at this current value. If the flow does not change, the solenoid valve may not be mechanically feasible.

  4. Set the current and the discharge pressure according to Step 4 of the test specifications. Pumps with positive flow control should be at the maximum displacement. If the discharge flow of the pump does not match Step 4 of the test specifications, adjust the adjustment screw for maximum angle (55). Adjustment of this setting can be performed by turning the adjustment screw for maximum angle (55) clockwise to increase flow or counterclockwise to decrease flow.

    Pumps with negative flow control should be at minimum displacement. If the discharge flow of the pump does not match Step 4 of the test specifications, adjust the adjustment screw for minimum angle (49). Adjustment of this setting can be performed by turning the adjustment screw for minimum angle (49) clockwise to decrease flow or counterclockwise to increase flow.

    Note: For part number 187-9683 load the pump according to Step 4 of the test specifications. Slowly apply 600 mA of current and watch the discharge pressure. Check the pressure at the pump discharge port (51). If the discharge pressure is more than 1550 kPa (225 psi), turn the adjustment screw for minimum angle (49) counterclockwise until the pressure equals 1550 kPa (225 psi). If the discharge pressure is less than 1550 kPa (225 psi), turn the adjustment screw for minimum angle (49) clockwise until the pressure equals 1550 kPa (225 psi).

    Note: The solenoid current values for Step 5 and 6 are different between part numbers. The pumps with positive flow control require full amperage to the solenoid. The pumps with negative control do not require amperage to the solenoid. Refer to Step 5 for the correct solenoid current.

  5. Decrease the input RPM and slowly increase the discharge pressure according to Step 5 of the test specifications. Compare the actual case drain with the value in Step 4 of the test specifications. If the actual value is larger than the value in the test specifications, the pump may not be mechanically feasible.

    Note: Do not perform Step 6 if the pump does not contain a high-pressure cutoff valve.

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

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

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

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

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


  6. Slowly increase the pump discharge pressure according to Step 6 of the test specifications. Adjust the adjustment screw for high pressure cut (53) according to Step 6 of the test specifications.

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

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 the ports.

Test Specifications

Table 3
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
147-5806(1)  CW  800 rpm  6900 (1000)  15 (4)   
2 1600 rpm 6900 (1000)  30 (8)   
3 1600 rpm 6900 (1000)  30 (8)  285   
4 1600 rpm 6900 (1000)  360 (95)  580   
5 800 rpm 20680 (3000)  180 (47.6)  580  11.25 (3) 
6 This pump does not contain a high-pressure cutoff valve.
(1) Positive Flow Control

Table 4
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
150-6600  Canceled replaced by 187-9682 

Table 5
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
155-9206(1)  CW  900 rpm  6900 (1000)  15 (4)   
2 1913 rpm 6900 (1000)  30 (8)   
3 1913 rpm 6900 (1000)  30 (8)  285   
4 1913 rpm 6900 (1000)  460 (122)  660   
5 900 rpm 20680 (3000)  230 (60)  660  12.5 (3.3) 
6 This pump does not contain a high-pressure cutoff valve.
(1) Positive Flow Control

Table 6
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
163-1942 (1)  CCW  800 rpm  6900 (1000)  53 (14)   
2 1600 rpm 6900 (1000)  104 (27.5)   
3 1600 rpm 6900 (1000)  104 (27.5)  200   
4 1600 rpm 6900 (1000)  208 (55)  600   
5 800 rpm 32400 (4700)  104 (27.5)  600  6.5 (1.7) 
6 800 rpm 36000±500 (5200±75)  0 (0)  600   
(1) Positive Flow Control

Table 7
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
166-7736 (1)  CCW  800 rpm  6900 (1000)  100 (26.5)   
2 1600 rpm 6900 (1000)  200 (53)   
3 1600 rpm 6900 (1000)  200 (53)  200   
4 1600 rpm 6900 (1000)  0 (0)  600   
5 800 rpm 31500 (4570)  100 (26.5)  6.5 (1.7) 
6 800 rpm 35000±3000 (5076±435)  0 (0)   
(1) Negative Flow Control

Table 8
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
180-4369(1)  CCW  800 rpm  6900 (1000)  100 (26.5)   
2 1600 rpm 6900 (1000)  200 (53)   
3 1600 rpm 6900 (1000)  200 (53)  200   
4 1600 rpm 6900 (1000)  0 (0)  600   
5 800 rpm 24300 (3525)  100 (26.5)  6.5 (1.7) 
6 800 rpm 27000±345 (3915±50)  0 (0)   
(1) Negative Flow Control

Table 9
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
187-9682(1)  CW  800 rpm  6900 (1000)  208 (55)   
2 1000 rpm 6900 (1000)  260 (69)   
3 1000 rpm 2000 (290)  260 (69)  200   
4 1000 rpm 2000 (290)  8 (2)  600   
5 800 rpm 20475 (2970)  208 (55)  13 (3.4) 
6 800 rpm 22750 (3300)  8 (2)   
(1) Negative Flow Control

Table 10
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
187-9683(1)  CCW  800 rpm  6900 (1000)  104 (27.5)   
2 1600 rpm 6900 (1000)  208 (55)   
3 1600 rpm 6900 (1000)  208 (55)  200   
4 1600 rpm 6900 (1000)  208 (55)  0(1)   
5 800 rpm 31500 (4570)  104 (27.5)  6.5 (1.7) 
6 800 rpm 35000±3000 (5100±450)  0 (0)   
(1) Refer to the note under Step 4 of the test specifications.

Table 11
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
225-4495(1)  CW  900 rpm  6900 (1000)  15 (4)   
2 1600 rpm 6900 (1000)  30 (8)   
3 1913 rpm 6900 (1000)  30 (8)  285   
4 1913 rpm 6900 (1000)  375 (99)  580   
5 900 rpm 20680 (3000)  176 (46.5)  580  9.6 (2.5) 
6 This pump does not contain a high-pressure cutoff valve
(1) Positive Flow Control

Table 12
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
240-7789  Canceled replaced by 344-3942 

Table 13
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
242-6923  Canceled replaced by 259-0784 

Table 14
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
259-0783(1)  CW  900 rpm  6900 (1000)  15 (4)   
2 1600 rpm 6900 (1000)  30 (8)   
3 1913 rpm 6900 (1000)  30 (8)  285   
4 1913 rpm 6900 (1000)  375 (99)  580   
5 900 rpm 20680 (3000)  176 (46.5)  580  9.6 (2.5) 
6 This pump does not contain a high-pressure cutoff valve
(1) Positive Flow Control

Table 15
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
259-0784(1)  CW  600 rpm  6800 (1000)  9.4 (2.5) 
2 1913 rpm 6800 (1000)  30 (7.9) 
3 1913 rpm 6800 (1000)  30 (7.9)  285 
4 1913 rpm 6800 (1000)  460 (120)  660   
5 600 rpm 20680 (3000)  142.3 (37.6)  660  6.5 (1.7) 
6 This pump does not contain a high-pressure cutoff valve
(1) Positive Flow Control

Table 16
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
259-0877(1)  CW  800 rpm  6800 (1000)  15 (4)     
2 1600 rpm 6800 (1000)  30 (8)     
3 1600 rpm 6800 (1000)  30 (8)  285   
4 1600 rpm 6800 (1000)  357 (94)  580   
5 1000 rpm 20680 (3000)  180 (47.6)  580  11.25 (3.3) 
6 This pump does not contain a high-pressure cutoff valve
(1) Positive Flow Control

Table 17
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
259-0878(1)  CW  600 rpm  6800 (1000)  9.4 (2.5) 
2 1913 rpm 6800 (1000)  30 (7.9) 
3 1913 rpm 6800 (1000)  30 (7.9)  285 
4 1913 rpm 6800 (1000)  460 (120)  660   
5 600 rpm 20680 (3000)  142.3 (37.6)  660  6.5 (1.7) 
6 This pump does not contain a high-pressure cutoff valve
(1) Positive Flow Control

Table 18
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
266-7951(1)  CW  600 rpm  6800 (1000)  9.4 (2.5) 
2 1913 rpm 6800 (1000)  30 (7.9) 
3 1913 rpm 6800 (1000)  30 (7.9)  285 
4 1913 rpm 6800 (1000)  375 (99)  580   
5 600 rpm 20680 (3000)  117 (30.9)  580  6.5 (1.7) 
6 This pump does not contain a high-pressure cutoff valve
(1) Positive Flow Control

Table 19
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
266-7953(1)  CW  900 rpm  6900 (1000)  15 (4)     
2 1913 rpm 6900 (1000)  30 (8)     
3 1913 rpm 6900 (1000)  30 (8)  285   
4 1913 rpm 6900 (1000)  460 (122)  660   
5 900 rpm 20680 (3000)  230 (60)  660  12.5 (3.3) 
6 This pump does not contain a high-pressure cutoff valve.
(1) Positive Flow Control

Table 20
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
281-8284(1)  CW  800 rpm  6900 (1000)  104 (27.5)   
2 1600 rpm 6900 (1000)  208 (55)   
3 1600 rpm 6900 (1000)  208 (55)  200   
4 1600 rpm 6900 (1000)  0 (0)  600   
5 800 rpm 31500 (4570)  104 (27.5)  6.5 (1.7) 
6 800 rpm 35000±3000 (5100±450)  0 (0)   
(1) Refer to the note under Step 4 of the test specifications.

Table 21
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
295-9412(1)  CW  900 rpm  6900 (1000)  14 (3.7)   
2 1913 rpm 6900 (1000)  30 (8)   
3 1913 rpm 6900 (1000)  30 (8)  260   
4 1913 rpm 6900 (1000)  360 (95)  640   
5 900 rpm 20000 (2900)  170 (45)  640  4.7 (1.2) 
6 This pump does not contain a high-pressure cutoff valve.
(1) Positive Flow Control

Table 22
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
295-9677(1)  CW  900 rpm  6900 (1000)  14 (3.7)   
2 1913 rpm 6900 (1000)  30 (8)   
3 1913 rpm 6900 (1000)  30 (8)  260   
4 1913 rpm 6900 (1000)  360 (95)  640   
5 900 rpm 20000 (2900)  170 (45)  640  4.7 (1.2) 
6 This pump does not contain a high-pressure cutoff valve.
(1) Positive Flow Control

Table 23
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
295-9678(1)  CW  900  6900 (1000)  14 (3.7)   
2 1913 rpm 6900 (1000)  30 (8)   
3 1913 rpm 6900 (1000)  30 (8)  260   
4 1913 rpm 6900 (1000)  460 (121)  640   
5 900 rpm 20000 (2900)  216 (56.8)  640  6 (1.6) 
6 This pump does not contain a high-pressure cutoff valve.
(1) Positive Flow Control

Table 24
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
299-3937  Canceled replace by 344-3942 

Table 25
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
303-9326 (1)  CW  800 rpm  6900 (1000)  116 (30.5)   
2 1600 rpm 6900 (1000)  232 (61)   
3 1600 rpm 6900 (1000)  232 (61)  200   
4 1600 rpm 6900 (1000)  232 (61)  0(1)   
5 800 rpm 25200 (3654)  116 (30.5)  7.0 (1.8) 
6 800 rpm 28000 (4060)  0 (0)   
(1) Refer to the note under Step 4 of the test specifications.

Table 26
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
314-8064  Canceled replaced by 344-3942 

Table 27
Part Number  Pump Rotation  Step  Input Speed  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
335-5893  Canceled replaced by 344-3942 

Table 28
Part Number  Pump Rotation  Step  Input Speed rpm  Discharge Pressure kPa (psi)  Discharge Flow lpm (gpm)  Solenoid Current mA  Max Case Drain Flow lpm (gpm) 
344-3942(1)  CCW  800 rpm  6900 (1000)  151 (40)   
2 1900 rpm 6900 (1000)  360 (95)   
3 1900 rpm 6900 (1000)  360 (95)  200   
4 1900 rpm 6900 (1000)  0 (0)  600   
5 800 rpm 29250 (4242)  151 (40)  11 (2.9) 
6 800 rpm 32500 (4710)  0 (0)   
(1) Negative Flow Control

Tooling

Table 29
Tooling 
Part Number  Adapter Plate  Drive Adapter  Suction Adapter  Split Flange  Flange Adapter  Case Drain Port 
147-5806   1U-9129   1U-9394   1U-9866   5P-8077   9U-7441   1 5/16 STOR  
150-6600   Canceled replaced by 187-9682  
155-9206   1U-9129   1U-9394   1U-9867   5P-8077   9U-7441   1 5/16 STOR  
163-1942   1U-9129   1U-9394   1U-9866   1P-5766   9U-7439   1 1/16 STOR  
166-7736   1U-9129   1U-9835   1U-9866   1P-5767   9U-7440   1 5/16 STOR  
180-4369   1U-9129   1U-9835   1U-9866   1P-5767   9U-7440   1 1/16 STOR  
187-9682   1U-9129   1U-9835   1U-9868   5P-8077   9U-7441   1 5/16 STOR  
187-9683   1U-9129   1U-9835   1U-9866   1P-5767   9U-7440   1 5/16 STOR  
225-4495   1U-9129   1U-9394   1U-9866   5P-8077   9U-7441   1 5/16 STOR  
240-7789   Canceled replaced by 314-8064  
242-6923   Canceled replaced by 259-0784  
259-0783   1U-9129   1U-9394   1U-9866   5P-8077   9U-7441   1 5/16 STOR  
259-0784   1U-9129   1U-9394   1U-9867   5P-8077   9U-7441   1 5/16 STOR  
259-0877   1U-9129   1U-9394   1U-9866   5P-8077   9U-7441   1 5/16 STOR  
259-0878   1U-9129   1U-9394   1U-9867   5P-8077   9U-7441   1 5/16 STOR  
266-7951   1U-9129   1U-9394   1U-9866   5P-8077   9U-7441   1 5/16 STOR  
266-7953   1U-9129   1U-9394   1U-9867   5P-8077   9U-7441   1 5/16 STOR  
281-8284   1U-9129   1U-9835   1U-9866   1P-5767   9U-7440   1 5/16 STOR  
295-9412   1U-9129   1U-9394   1U-9866   5P-8077   9U-7441   1 5/16 STOR  
295-9677   1U-9129   1U-9394   1U-9866   5P-8077   9U-7441   1 5/16 STOR  
295-9678   1U-9129   1U-9394   1U-9866   5P-8077   9U-7441   1 5/16 STOR  
299-3937   Canceled replaced by 344-3942  
303-9326   1U-9129   1U-9394   1U-9866   1P-5766   9U-7439   1 1/16 STOR  
335-5893   Canceled replaced by 344-3942  
314-8064   Canceled replaced by 344-3942  
344-3942   1U-9129   1U-9835   1U-9867   5P-8077   9U-7441   1 5/16 STOR  

Caterpillar Information System:

C-15, C-16 and C-18 Truck Engines Pistons and Connecting Rods - Install
C15 and C18 Engines for Caterpillar Built Machines Turbocharger - Install
C15 and C18 Engines for Caterpillar Built Machines Turbocharger - Remove
C15 and C18 Generator Set Engines Inlet and Exhaust Valve Guides - Remove and Install
C15 and C18 Generator Set Engines Inlet and Exhaust Valve Seat Inserts - Remove and Install
CIPI UNDERCARRIAGE Arrangements: 9Q5221, 9Q5234, 9Q5243, 9Q5245, 9Q5246, 9Q5247, 9Q5385, 9Q5433, 9Q5482, 9Q5622, 9Q5661, 9Q5719, 9Q5720, 9Q5721, 9Q5722, 9Q5830, 9Q5840, 9Q5857, 9Q5874, 9Q5883, 9Q5930 and 9Q5940 Front Idler, Recoil Spring and Hydraulic Track Adjuster - Remove and Install
C27 and C32 Generator Set Engines Electronic Unit Injector Sleeve - Install
C15 Petroleum Engines Electronic Unit Injector Sleeve - Remove
Solenoid (Starting Motor) − Replace{1467} Solenoid (Starting Motor) − Replace{1467}
C18 Marine Auxiliary Engines System Configuration Parameters
C15 Generator Sets Walk-Around Inspection
C15 and C18 Engines for Caterpillar Built Machines Exhaust Manifold - Remove and Install
C9 Marine Auxiliary and Marine Generator Set Engines Switch Circuits - Test
C32 Marine Engine Plate Locations and Film Locations
C15 and C18 Engines for Caterpillar Built Machines Turbocharger - Disassemble
C15 and C18 Engines for Caterpillar Built Machines Turbocharger - Assemble
C9 Marine Auxiliary and Marine Generator Set Engines Speed Control (Switch) - Test
C15 and C18 Engines for Caterpillar Built Machines Engine Oil Pump - Remove
3524B Engines for 797 and 797B Off-Highway Trucks Cold Mode Operation
C15 and C18 Engines for Caterpillar Built Machines Engine Oil Pump - Install
C15 On-Highway Engine Engine Oil Pump - Disassemble
C15 On-Highway Engine Engine Oil Pump - Assemble
2004/03/29 Special Instruction, REHS1037 , "Installation Instructions for the Electric Fuel Priming Pump on Caterpillar Equipment With the 24 Volt System" has been Revised {1258}
C9 Marine Auxiliary and Marine Generator Set Engines Air Inlet Heater Circuit - Test
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