24. SERVICE PROCEDURE 24.4.6 CHECK ALTERNATOR BELT, ADJUST Checking The belt should normally deflect by above 15 mm (0.6 in) when pressed with the thumb (with a force of approx. 58.8 N (6 kgf) at a point midway between the drive pulley and alternator pulley. AE134210 Adjusting 1. Insert a bar between alternator 8 and the cylinder block to fix alternator 8 in position. When fixing alternator 8 in position, insert a wooden block between the bar and alternator 8 to prevent damage to the alternator. 2. Loosen nuts and bolts 1 to 6 in numerical order, then remove alternator 8 and adjust. Turn nut 7 to adjust as follows. TIGHTEN nut to INCREASE belt tension LOOSEN nut to DECREASE belt tension 3.
After adjusting the belt, tighten nuts and bolts 1 to 6 in numerical order, then tighten nut 7 . 4. Check each pulley for damage, wear of the V-groove, and wear of the V-belt. In particular, be sure to check that the V-belt is not touching the bottom of the V-groove. 5. Replace the V-belt if it has stretched, leaving no allowance for adjustment, or if the belt is cut or cracked. 6. When the V-belt has been replaced, adjust it again after operat- ing for one hour. 3-56