PREVENTIVE MAINTENANCE SCHEDULE 5 5-14 Y53-6077-1B1 (03/17) PREVENTIVE MAINTENANCE (PM) INTERVALS SYSTEM COMPONENT MAINTENANCE TASK Recommended PM Interval I A B C D E Front Axle (Meritor) Total Vehicle Alignment Check and adjust as required. X X Steering knuckle spindles, thrust bearings, kingpins, drawkeys, tie rod ends, steering stops, and bushings Inspect for wear and damage and endplay. Shim or replace as required (shown on page 5-136). X Kingpin bushings, thrust bearings, and tie rod ball ends Lubricate with approved grease. X Drawkeys Tighten nuts X X