PUMP GP-WATER 4575092 - Caterpillar

Problem 3
The fan speed is too low or too high.Probable Cause
The demand fan motor may be calibrated incorrectly.
The solenoid on the fan motor is bad.
The hydraulic temperature switch is bad.
The coolant temperature switch is bad.
Charge pump flow is low.
Broken wire in the harness.
Connector loose at solenoid.Problem 4
There is no hydraulic oil flow out of the charge section of the gear pump.Probable Cause
The linkage between the two sections of the gear pump has broken. Replace the gear pump.
There has been damage to the seals on the charge pump. Replace the gear pump.Problem 5
Hydraulic oil flow out of the two sections of the gear pump is limited.Probable Cause
Check the inlet line for a restriction.
The strainer for the inlet is clogged.
The oil level is too low.
The hydraulic oil temperature is too low.
The gear pump is worn.
There is a restriction or there is a leak in the hydraulic line from the hydraulic tank.
If there is NO OIL FLOW, check the mechanical linkage between the hydrostatic piston pump and the engine.
If there is NO OIL FLOW, check the mechanical linkage between the implement & charge pump stack and the hydrostatic piston pump.Problem 6
The hydraulic tank is pressurized.Probable Cause
The breather for the hydraulic tank is clogged.Problem 7
The lift circuit and the tilt circuit are not functioning properly.Probable Cause
The main relief valve setting is too low.
The charge pressure is incorrect.
The electrohydraulic control (work tool) is not functioning properly. Check the calibration of the joystick.
The control valve (work tool) is not functioning properly. Check the calibration of the implement valve solenoids.
The cylinder is not functioning properly.
The work tool pump is not functioning properly.
One of the lines or one of the hoses is broken.
The interlock system is not functioning properly.
The load is too heavy.
A line relief valve is set too low.
A load check valve on the control valve (work tool) is stuck in the CLOSED or OPEN position.Problem 8
The auxiliary hydraulic system is not functioning.Probable Cause
The switch for the hydraulic shutoff valve is in the OFF position.
The auxiliary Quick disconnect block has an internal leak.
The auxiliary controls on the joystick are not functioning properly.
The platform harness, the cab harness, or the harness for the electrohydraulic control (work tool) is not functioning properly.
The auxiliary solenoids are not functioning properly.
The control valve (work tool) is not functioning properly. Check the calibration of the implement valve solenoids.
The work tool is not functioning properly.
The harness for the work tool is not functioning properly.
The ECM or the software is not functioning properly.
The line relief setting is too low.
The auxiliary circuit connections are not fully engaged.Problem 9
All work tool functions and auxiliary functions are sluggish, erratic, or intermittent.Probable Cause
The work tool pump is not functioning properly.
The main relief setting is too low.
The hydraulic system is contaminated.
The control valve (work tool) and the spools have an excessive amount of wear.
The valve or joystick calibration is incorrect.
The charge pressure is too low.
The line relief valves are set too low or the line relief valves are damaged.
The load check valve is partially closed.
The auxiliary solenoid is