MAINTENANCE 24.6.2 CHECK TENSION OF FAN BELT, ALTERNATOR BELT, ADJUST CHECK The belt deflection should be about 10 mm (0.39 in.) when pressed with a finger force of about 58.8 N (6 kgf) at a point midway between the fan pulley and the alternator pulley. 1. Check the belt for cuts or cracks. If found, replace the belt. 2. Check each pulley for damage and groove wear. If the belt touches the bottom of the groove, the pulley needs replacement. ADJUSTMENT 1. Loosen the nuts and bolts (1), (2), and (3). 2. Turn the nut (4) to the right and move the alternator (5) to obtain the specified belt deflection (10 mm or 0.39 in.). 3.
If the specified belt deflection cannot be obtained, the belt is stretched and must be replaced. 4. Tighten the nuts and bolts (1), (2), and (3) to hold the alternator in position. 5. After operating the engine for one hour, adjust the belt tension again. WA450-3MC 3-42