MAINTENANCE MAINTENANCE PROCEDURE 2. Remove cover (1). 3. Remove cover (2). 4. Insert a bar between alternator (3) and the cylinder block to fix alternator (3) in position. When fixing alternator (3) in position, insert a wooden block between the bar and alter- nator (1) to prevent any damage to the alternator. 5. Loosen alternator fixing bolt (4) and adjust bolt (5). 6. Using a bar, move alternator (3) towards the front of the machine to adjust the belt tension so that the deflection is approx. 5 to 6 mm (0.197 to 0.236 in) (approx. 58.5 N (6 kgf)), then tighten adjustment bolt (5). 7. Tighten mounting bolt (4).
NOTICE 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. If the belt is stretched and there is no allowance for adjustment, or if it is cut or cracked, please contact your Komatsu distributor for replacement. 8. Install cover (2) and cover (1). 4-47