GUARD GP- 3157200 - Caterpillar

Auger/Conveyor Troubleshooting Problem List
Problem: The auger/conveyor does not move in either direction.
Probable Cause:
The hydraulic oil level is low.
The auger/conveyor control is faulty.
The charge pressure for the auger/conveyor pump is low.
The system pressure is low.
The relief valve is faulty.
The electronic displacement control (EDC) is faulty.
The auger/conveyor system load is higher than the relief valve setting.Problem: The auger/conveyor will move in one direction only.
Probable Cause:
The auger/conveyor control is faulty.
The relief valve is faulty.
The charge check valves are faulty.
The EDC control valve is faulty.
The oil in the EDC control is contaminated.Problem: The auger/conveyor cannot be placed in NEUTRAL.
Probable Cause:
The auger/conveyor control is faulty.
The EDC valve is faulty.
The auger/conveyor pump is faulty.
The electrical displacement control (EDC) is not adjusted or calibrated correctly.Problem: The system is overheating.
Probable Cause:
The hydraulic oil level is low.
The hydraulic oil cooler is plugged or dirty.
The suction filter is clogged.
The relief valve is faulty.
The system pressure is high.
There is excessive load on one or more systems.
There is a restriction in a line.
The oil cooler bypass valve is faulty.
The charge pressure is low.
The hydraulic fan system is faulty.Problem: Response of the auger/conveyor system is sluggish.
Probable Cause:
The charge pressure is low.
The control valve is faulty.
The oil is not at operating temperature.
The setting for the relief valve is incorrect.
The system calibration is faulty.Problem: Auger/conveyor charge pressure is low.
Probable Cause:
One or both of the charge relief valves for the auger/conveyor system is faulty.
The motor plumbing is incorrect.Problem: Auger/conveyor charge pressure is low during operation.
Probable Cause:
The motor plumbing is incorrect.
The pump or motor is faulty as a result of high leakage.Problem: The auger/conveyor creeps in either direction when in the OFF position.
Probable Cause:
The pump neutral position is not properly adjusted.
The electrical circuit contains a fault.
The auger/conveyor pumps or motors may have excess leakage.
The system calibration is faulty.Cooling Fan System Troubleshooting Problem List
Problem: The cooling fan does not move.
Probable Cause:
The hydraulic oil level is low.
The cooling fan pump control is faulty.
The pump relief valve is faulty.
The fan control (ECM) or wiring is faulty.
The engine control is faulty.Problem: The fan control remains at one speed only.
Probable Cause:
The fan pump is faulty.
The fan pump control is stuck.
The fan wiring has failed or is not connected to the fan.Problem: The system is overheating.
Probable Cause:
The hydraulic oil level is low.
The hydraulic oil cooler is plugged or dirty.
The suction filter is clogged.
The system pressure is too high.
There is excessive load on one or more systems.
There is a restriction in a line.
The oil cooler bypass valve is faulty.
The cooling fan system is faulty.Problem: Response of the fan system is sluggish.
Probable Cause:
The pump control is faulty.
The oil is not at operating temperature.
The ECM or wiring is faulty.