TM 10--3510--221--24 0111 00--4 LAUNDRY ADVANCED SYSTEM PREVENTIVE MAINTENANCE CHECKS AND SERVICES -- Continued 0111 00 TABLE 1. Unit PMCS -- Continued. ITEM NO. INTERVAL MAN-- HOUR ITEM TO BE CHECKED OR SERVICED PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 2 Quarterly Washing/drying drums Inspect drive belts for wear. Replace if cracks, fraying, or worn cogs are found. Check belt tension and alignment of sheaves (WP 0117 00). Drive belt worn, loose, or misaligned Inspect brake pads (1) and brake rotor (2) for wear and scouring. a. Remove four screws (3) and lock washers (4). b. Remove brake guard (5). c. Measure thickness of brake pads (1). Replace if worn (WP 0120 00). d. Inspect surface of brake rotor (2) for cracks and scouring. Replace if damaged (WP 0263 00). e. Reinstall brake guard (5) and secure with four screws (2) and lock washers (3). Brake pad thickness is < 11/32 inches. Brake rotor is cracked or scoured. 3 Quarterly Washing/drying drums suspension Inspect air bags (6) for wear. Replace if cracks or other surface defects are found (WP 0138 00) or (WP 0139 00). Air bags are worn. Inspect front side--to--side vibration eliminators (7) for wear and preload. Attempt to spin eliminators on both sides of drum. If both eliminators spin replace (WP 0141 00). Vibration eliminators are worn. Inspect rear side--to--side vibration eliminators (8) for wear. Push each mount against pedestal (9) and measure clearance. Replace eliminators if total clearance for both eliminators exceeds 5/8 inches (WP 0142 00). Vibration eliminators are worn. Inspect front shock absorbers (10). Disconnect one end of shock. Attempt to extend and retract by hand. Replace if shock offers little resistance or reattach if resistance is acceptable (WP 0136 00). Shock absorber(s) are worn. Inspect rear front--to--back vibration eliminators (11) for wear. Replace if metal insert (12) at front of mount is exposed. (WP 0143 00). Vibration eliminators are worn.