Komatsu — EVERY 250 HOURS SERVICE

. MAINTENANCE SERVICE PROCEDURE CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST Before starting the operation, or remove cover (1). 4 - 47 (If equ ipped) CHECKING d deflection between the air conditioner compresso The s tandar ompresso pulley and cr ank p ulley when press ed with a thumb (approx. 98 N (10 kg )) shou ld be approx. 2 5 to 26 mm (0.9 to 1.0 in). When a belt tension gauge is used , the standard t ension is within a rang e of 29 4 to 441 N (30 t o 45 k g). CHECK WHEN CHANGING THE V-BELT The s tandard deflection between th e air conditione r compressor pulley and fan pulley whe n pressed with a thumb (appro x. 98 N (10 kg)) s houl d be a pprox . 22 to 23 mm (0.8 t o 0.9 in).

When a belt tension gauge is used , the standard te nsion is within a range of 540 to 637 N REMA RK When the be lt has been replaced w ith a new part, a high tension is necessary, so the initia l tension is in the value given above.