MAINTENANCE MAINTENANCE PROCEDURE CHECK AND ADJUST COOLING FAN BELT TENSION 4 Checking 4 Deflection (a) should be 6 to 10 mm at a point midway between the alternator pulley and fan pulley when pressed with a finger force of approx. 58.8 N (6 kgf). (A): Alternator pulley (B): Fan pulley (C): Crankshaft pulley Adjustment 4 1. Loosen bolts and nuts (2) and (3). 2. Loosen locknut (4) and move alternator (1) with adjustment bolt (5) so that the deflection of the belt is 6 to 10 mm when pressed with a finger force of approx. 58.8 N (6 kgf). 3. Tighten locknut (4) and bolts and nuts (2) and (3) to hold alternator (1) in position. 4.
Check for damage to the pulleys, and wear of the V-groove and V-belt. Be particularly careful to check that the V-belt is not in contact with the bottom of the V-groove. 5. If the belt has elongated and there is no more allowance for adjustment, or if the belt is cut or cracked, replace the belt. 6. After replacing the V-belt, operate for one hour, then adjust again. 4-63