PREVENTIVE MAINTENANCE SCHEDULE 5 (03/17) Y53-6077-1B1 5-37 PREVENTIVE MAINTENANCE (PM) INTERVALS SYSTEM COMPONENT MAINTENANCE TASK Recommended PM Interval I A B C D E Electrical and lights Power supply harnesses (engine, transmission, etc.) Check for worn or damaged insulation, corroded terminals, frayed wires, and oil or fluid leaks on the connectors or wiring. X Wash to remove excess grease. X Cab structure, doors and hoods Hood Lubricate the lower hood pivot (only if lube fittings are present). X Hinges and latch Lubricate with silicone spray. X Body and cab holddown bolts Check the condition and tightness. X Heating and Air Condi- tioning Air conditioner Operate the system.
X Heater and air conditioner Perform the checks listed shown on page 5-120. X Full operational and diagnostic check. X Condenser Clear any debris from the front of the condenser. X