Komatsu — INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS)

. MAINTENANCE MAINTENANCE PROCEDURE CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST Checking Adjustment 2. Loosen bolt (1) and bolts (2), then move compressor (3) to adjust. is determined, tighten 4 - 54 Press and compressor pu lley with a fing er force of a pprox. 58.8 N (6 kgf) and check that the deflection is 5 to 8 mm (0 .20 in t o 0.31 in). 1. Loosen bo lts (1) and (2). Bracket (4) holds the compressor in pla When bolts (1) and (2) are loosened, bracket (4) moves with the securing position of bolt ( 2) as 3. When the position bolts (1) a nd (2) to hold it in position. 4. Check for damage to the pulleys, an d wear of the V-groov e and V-belt.

Be particularly c areful to check that the V-belt is n ot in contact wi th the botto m of th e V-groove. 5. If t he belt h as elongated and there is no mo re allowance fo r adjustment , or if the belt is cut or cracked, replace the belt. 6. After repla cing the V-belt , operate fo r one h our, t hen adjus t again.