Maintenance Service
Interval
Every 400 hours
Every 600 hours
Every 800 hours
Every 1,000 hours
Service Interval Chart
Heavy Duty Operation
Important: If the vehicle is subjected to any of the conditions listed below, maintenance should be
performed twice as frequently:
• Desert operation
• Cold climate operation (below 32 degrees F)
• Trailer towing
• Frequent operation on dusty roads
• Construction work
Maintenance Procedure
• Check lines and connections. (Inspect for deterioration, damage, or loose
connections.)
• Replace filter canister.
• Check front wheel toe-out.
• Visually inspect brakes for worn brake shoes.
• Check the cylinder head torque.
• Adjust engine valve clearance.
• Change the front differential oil.
• Change the transaxle hydraulic fluid and filter, and clean the strainer.
• Replace the hydraulic filter.
• Clean the hydraulic strainer.
• Change the brake fluid.
• Re–torque the cylinder head bolts.
• Drain/flush the fuel tank.
• Flush/replace the coolant system fluid.
Figure 36
37