PREVENTIVE MAINTENANCE SCHEDULE 5 5-36 Y53-6077-1B1 (03/17) PREVENTIVE MAINTENANCE (PM) INTERVALS SYSTEM COMPONENT MAINTENANCE TASK Recommended PM Interval I A B C D E Electrical and lights Headlamps Check the aim and adjust as required. X Warning lights in light bar Check at the ignition start position to verify bulbs and driver information display function. X Turn, Stop, Reverse lights and signals Visual check. X Alternator Check operation and output. X Check tightness of the pulley nut. X Check the tension of the drive belt (shown on page 5-105). X Check tightness of the terminal hex nuts. X Starter Check torque on hex nuts. X ECM connector Check the tightness of the ECM connector.
X Wheel sensors Check for damaged sensors and connectors, and worn or frayed wires. X Fuel and diesel exhaust fluid tank sending unit Check the mounting screws and electrical connections for worn or damaged wires and connectors. X X