Table 26: Hydraulic System Troubleshooting

Problem

Possible Cause

Oil leaking past tilt cylinder seals (internal or external).

Corrective Action

Attachment tilts down with tilt control in neutral

Contact dealer. Oil leaking past lift spool in control valve.

Self-leveling valve malfunction. Leaking hydraulic hoses, tubes or fittings between control valve and cylinders. Repair as required.

Attachment does not self-level when lift arm is raised

Self-leveling valve malfunction.Contact dealer. Self-leveling is deactivated. Activate self-leveling. See “Self-Leveling Cancel” on page104.

Oil leaking past lift cylinders seals (internal or external).

Lift arms move down with lift control in neutral

Contact dealer. Oil leaking past lift spool in control valve.

Self-leveling valve malfunctioning.

Leaking hydraulic hoses, tubes or fittings between control valve and cylinders. Repair as required.

Lift spool in control valve not actuated or leaking. Contact dealer. Hydraulic oil leaking past cylinder piston seals.

Lift arm does not raise/lower

Lift arm support engaged.Release lift arm support.

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

Restraint bar not lowered.Lower restraint bar.

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

Air in hydraulic system.

Lift and/or tilt functions inconsistent/jerky

Cycle lift and tilt cylinders to maximum stroke and maintain pressure for short time to clear air from the hydraulic system. Also check for low oil level in reservoir; see “Checking Hydraulic Oil Level” on page147. Top off as necessary.

Low hydraulic oil level. Top off hydraulic oil. See “Checking Hydraulic Oil Level” on page147. See “Fluid Capacities/ Lubricants” on page187 for proper oil grade.

Cylinder(s) malfunction.Contact dealer.

Seat or restraint bar switch malfunction.

Check electrical connections to switches. Repair as required.