Table 26: Hydraulic System Troubleshooting Problem
Possible Cause Corrective Action Oil leaking past tilt cylinder seals (internal or external). Oil leaking past lift spool in Contact dealer. Attachment tilts control valve. down with tilt control Self-leveling valve malfunction. in neutral Leaking hydraulic hoses, tubes or fittings between control valve Repair as required. and cylinders. Attachment does not Self-leveling valve malfunction. Contact dealer. self-level when lift Activate self-leveling. See “Self-Leveling Self-leveling is deactivated. arm is raised Cancel” on page 104. Oil leaking past lift cylinders seals (internal or external). Oil leaking past lift spool in Contact dealer. Lift arms move down control valve. with lift control in Self-leveling valve neutral malfunctioning. Leaking hydraulic hoses, tubes or fittings between control valve Repair as required. and cylinders. Lift spool in control valve not actuated or leaking. Contact dealer. Hydraulic oil leaking past cylinder piston seals. Lift arm support engaged. Release lift arm support. Lift arm does not raise/lower Check solenoid electrical connections; repair Lift solenoid valve malfunction. as necessary. Restraint bar not lowered. Lower restraint bar. Seat or restraint bar switch Check switch electrical connections; repair as malfunction. necessary. Cycle lift and tilt cylinders to maximum stroke and maintain pressure for short time to clear air Air in hydraulic system. from the hydraulic system. Also check for low oil level in reservoir; see “Checking Hydraulic Oil Level” on page 147. Top off as necessary. Lift and/or tilt Top off hydraulic oil. See “Checking Hydraulic functions Low hydraulic oil level. Oil Level” on page 147. See “Fluid Capacities/ inconsistent/jerky Lubricants” on page 187 for proper oil grade. Cylinder(s) malfunction. Contact dealer. Seat or restraint bar switch Check electrical connections to switches. malfunction. Repair as required.
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