4. MAINTENANCE 1. Hydraulic System (Continued) 2. Hydrostatic Drive 62 Problem Cause Remedy Foot pedals do not operate smoothly Foot pedal linkages out of adjustment Adjust foot pedal linkages. Foot pedal linkages need lubrication Lubricate with a silicone based lubricant. Problem Cause Remedy No power on one side (both directions) Reservoir low on fluid Replenish with 10W30 API SJ oil. Check for hose or fitting leak. Disconnected control linkage Reconnect and adjust linkage. Bolt sheared on pump pintle lever Replace. Check pintle lever for loose bolt or excessive play. High pressure line failure Replace line. Ensure new line fits without being forced. If necessary stress relieve.
Drive chain failure Replace chain or connection link. Adjust tightener tension. Motor shaft or key failure Inspect and repair defective parts. Check motor mounting bolts. Excessive internal leakage in motor and/or pump Inspect and repair defective unit. Flush all lines and tank. Replace filter. Check on type of fluid used and engine RPM. No power on one side (one direction only) Defective relief valve Replace defective valve. No power on both sides (also loss of hydraulic power) Reservoir low on oil Replenish with 10W30 API SJ oil. Check for hose or fitting leaks. Coupling failure between engine and pump Inspect and replace damaged parts. Check for misalignment between engine and pumps.
Drive coupling between front and rear pump failure Inspect couplings for sheared splines, replace. Also check support bearings in pumps. Check system pressure If low, consult dealer. Gradual loss of power as machine warms up Excessive internal leakage in pump and/or motor Consult dealer. System erratic and/or noisy Air in system due to low oil level in reservoir Replenish with 10W30 API SJ oil. Air in system due to leak at suction fitting Check fittings and tighten. Internal pump or motor wear caused by overspeeding Consult your dealer. Excessive play in linkage or pintle lever Adjust linkage and tighten or replace pintle lever.
Machine will not travel in a straight line Control levers binding Check that shields are not stopping lever from full travel. Adjust tracking.