Table 26: Hydraulic System Troubleshooting

Problem

Auxiliary hydraulics do not function

Possible Cause

Corrective Action

Restraint bar raised.Lower restraint bar. Restraint bar switch malfunctioning. Check electrical connections. Contact dealer.

Solenoid malfunctioning. Check electrical connections. Contact dealer.

Spool in control valve not actuated or leaking. Contact dealer. Hydraulic oil leaking past seals. Auxiliary hydraulic connections improperly connected. Correct hydraulic connections.

Auxiliary hydraulic control module malfunction. Contact dealer.

Auxiliary hydraulics connections difficult to connect/ disconnect

Auxiliary hydraulics circuit under pressure.

Tilt solenoid valve malfunction.

Lift arm operates, but attachment tilt does not

Attachment tilt operates, but lift arm does not

With the engine off, but the ignition on, move the auxiliary hydraulics control rocker switch on the right T-bar, joystick or hand control back and forth to relieve pressure in the auxiliary hydraulics circuit.

Check electrical connections to solenoid; repair as necessary. Contact dealer.

Tilt spool in control valve not actuated or leaking. Contact dealer. Control valve in float position.Move control out of float position. Tilt cylinder malfunction. Contact dealer. Control valve relief valve malfunction (Squealing noise during operation).

Restraint bar not lowered.Lower restraint bar.

Seat or restraint bar switch malfunction.

Check switch electrical connections; repair as necessary.

Lift arm support engaged.Release lift arm support. Restraint bar not lowered.Lower restraint bar.

Seat or restraint bar switch malfunction. Check switch electrical connections; repair as necessary.

Hydraulic oil leaking past cylinder piston seals. Contact dealer.

Lift solenoid valve malfunction. Check electrical connections to solenoid; repair as necessary. Contact dealer.

Lift spool in control valve not actuated or leaking. Contact dealer.