PREVENTIVE MAINTENANCE SCHEDULE 5 (03/17) Y53-6077-1B1 5-13 PREVENTIVE MAINTENANCE (PM) INTERVALS SYSTEM COMPONENT MAINTENANCE TASK Recommended PM Interval I A B C D E Frame Fifth Wheel Check the kingpin lock and plate for wear and function; lubricate (NLGI #2 grease). X Inspect fifth wheel operation (shown on page 5-113) X Frame Fasteners Check for tightness; tighten to the specified torque value as required (shown on page 5-114). X Crossmembers and Mounting Brackets Inspect for cracks and loose fasteners. Replace or tighten to the specified torque value as required (shown on page 5-114). X Engine Mounting Inspect engine mounts every 60,000 miles (96,560 km) (shown on page 5-110).
Contact an authorized vehicle OEM dealership if engine mounts need servicing. X