TM 9-2320-361-20 4-2. ALTERNATOR BELTS MAINTENANCE (Contd) 1. Loosen screws (9) and nut (2) on alternator adjusting arm (l). 2. Remove two cotter pins (6) and loosen front and rear locknuts (7). Discard cotter pins (6). 3. Rotate alternator (12) toward engine (11) and remove two alternator belts (4) from alternator pulley (8), water pump pulley (3), and vibration damper (5). b. Inspection Inspect two alternator belts (4) for cracks, fraying, and splits. Replace if cracked, frayed, or split. c. Installation and Adjustment NOTE Alternator belts are a matched set. 1. 2. 3. 4. 5. 6. Install two alternator belts (4) on vibration damper (5), water pump pulley (3), and alternator pulley (8). Position prybar (10) between engine (11) and alternator (12). Pull prybar (10) down until belts (4) appear tight. Place straight edge (13) across alternator pulley (8) and water pump pulley (3) and check for 0.75 in. (1.905 cm) deflection on alternator belts (4). Tighten screw (9) at adjusting arm (1) 15-20 lb-ft (20-27 N.m). Tighten nut (2) at adjusting arm (1) 25-31 lb-ft (34-42 N.m). Tighten two nuts (7) and install two new cotter pins (6). Tighten nuts (7) 33-42 lb-ft (45-57 N.m). 4-2