PUMP GP-GEAR 2699466 - Caterpillar

Illustration 5 g03094697
Swing brake control button on the machine control panel.
Push down on the swing brake control button to de-activate the swing brake.Note: The green indicator light will be illuminated when the swing brake is de-activated.
Increase the hydraulic oil temperature to 49° C to 60° C (120° F to 140° F).
Illustration 6 g06012461
"All Stabilizer Lower" control button on the machine control panel.
Push the "All Stabilizer Lower" control button to lower all stabilizers to the ground.
Lower the work tool to the ground.
Place the hydraulic lockout control lever in the LOCKED position.
Stop the engine.
Illustration 7 g06024189
Left front view, components removed for clarity.
(1) Panel
Remove panel (1) from the left side of the cooling fan enclosure.
Illustration 8 g06024201
The fan pump is on the left side of the engine.
Illustration 9 g06023916
Disconnect the wiring harness from fan pump control solenoid (2).
Illustration 10 g06030848
View of cooling fan and hose
(3) Fan motor and reversing valve
(4) Hose from fan pump
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations and mandates.
Install tooling onto fan motor (3).
Disconnect hose (4) from the fitting on fan motor reversing valve (3).
Install 7X-0871 Tee onto the fitting on fan motor reversing valve (3).
Connect hose (4) onto 7X-0871 Tee.
Connect 6V-3965 Fitting onto open port on 7X-0871 Tee.
Connect tooling (B2) 41,368 kPa (6,000 psi) pressure sensor to 6V-3965 Fitting.
Test Procedure
Clear all personnel from the machine and from the area around the machine.
Start the engine.
Illustration 11 g01162712
Place the hydraulic activation control lever in the unlocked position.
Set the engine rpm on the "Engine Status" display screen.
Illustration 12 g06012487
To access the "Engine Status" display screen, press the "Machine Status" function button (F2) from the main display screen.
Press the "Engine Status" function button (F2) from the "Machine Status" screen.
Use the "UP" and "Down" buttons to change engine speed by the "Throttle Rate Change" percentage.
Use the "OK" button to toggle the "Throttle Rate Change" between 10% and 1%.Note: Refer to Table 1 in this procedure for the correct speed.
Check the fan pump cutoff pressure.Note: Refer to Table 1 in this procedure for the correct pressure.
If the fan pump cutoff pressure is not set to the proper specification, refer to the following Adjustment Procedure.Adjustment Procedure
Illustration 13 g06083611
Fan pump.
(1) High-pressure cutoff valve
(2) Locknut
(3) Adjustment screw
Loosen locknut (2) on the high-pressure cutoff valve (1).
Turn adjustment screw (3) until the pressure reading has reached the correct pressure.Note: Turn the adjustment screw clockwise to increase the pressure. Turn the adjustment screw counterclockwise to decrease the pressure.
Hold adjustment screw (3), and tighten locknut (2).
Verify that the pressure is within specification.