LINK AS 5132315 - Caterpillar

The Machine Pauses Before the Machine Starts to Steer
Probable Causes
The hydraulic oil is too thick or the type of oil is incorrect.
Steering charge pressure or flow is low.
The steering pump controls are suspect.
The orifice in the pump control is partially blocked.
The NEUTRAL setting for the steering pump is improperly adjusted. The Steering Speed is Slow in Both Directions and Oil Output of the Steering Pump is Low
Probable Causes
Steering charge pressure or flow is low.
The steering pump controls are suspect.
The pressure setting for the pump cutoff valve is low.
The steering pump has failed or the pump has wear. The steering motor has failed or the motor has wear. Steering Speed Is Slow in One Direction and the Oil Output of the Steering Pump Is Low in One Direction
Probable Causes
The flushing valve of the steering pump is suspect or the valve is stuck open.
The steering pump control is improperly adjusted or the control is suspect. The Machine Has Low Turning Force in Both Directions and the Output Pressure of the Steering Pump is Low in Both Directions
Probable Causes
The cutoff pressure setting for the steering pump is too low.
Both pressure settings of the crossover relief and makeup valves are low or the valves are suspect.
Steering charge pressure is too low.
The steering pump or the steering motor has too much wear. The Machine Has Low Turning Force in One Direction and the Pressure Output of the Steering Pump is Low in One Direction
Probable Causes
One pressure setting of a crossover relief and makeup valve is low or the valve is suspect.
The flushing valve of the steering pump is stuck open or the flushing valve has high leakage.
The steering pump or the steering motor has excessive wear or excessive leakage. The Machine Will Not Turn in Either Direction
Probable Causes
The steering pump pressure or flow is low.
The pump cutoff valve is suspect.
The steering pump or the steering motor has failed.
The steering pump or the steering motor is loose. The steering pump or the steering motor has backed out of the drive splines.
The parking brake is not releasing. Check the following causes:
The wiring has a fault.
The brake valve spool is stuck.
The brake valve has excessive internal leakage. The Pump Remains at NEUTRAL in One Direction and the Machine Does Not Turn in One Direction
Probable Causes
The pump controls in the steering pump are suspect.
The flushing valve in the steering motor is stuck open.
The zero position for the steering pump is improperly adjusted.
The steering pump controls have excessive leakage. Steering Pump Pressures in NEUTRAL Are Too High or Too Low
Probable Causes
The pressure setting of the charging valve for steering is too high or too low.
The setting for the pressure control valve for steering is low. Steering Speed Changes with a Step or Steering Modulation is Poor
Probable Causes
The hydraulic oil is too thick or the oil is the wrong type. Warm the oil to operating temperature.
The steering supply flow is partially blocked.
A partial blockage exists in the steering pilot circuit.
The pump control is suspect or the control needs adjustment.