. MAINTENANCE MAINTENANCE PROCEDURE CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST midpoint between the fan pulley and compressor pulley, then it is the standard deflection amount. 4. Tighten nut (3) after loosening bolt (4) by 2 to 3 turns, and then retighten bolt (4). 4 - 60 (If equipped Checking If d eflection amount "a" shows 10 to 12 mm (0.4 to 0.5 in) whe n the bel t is pres sed with a finger of a pprox. 58.8 N (6 kgf) force at the Adjustment Loosen Loosen nut (3) and tighten bo lt (4) until fan belt deflection of 10 to 12 m obtaine Tighten NOTICE Check eac h pulley for damage, we ar of the V-groove, and wear of the V-belt.
In particular, be sure to c heck that the V-belt is no t ouching t he bottom of the V-groo ve. s, ask the Komatsu distributor in your territory to replace the belts with new ones. ing little allowance for adjustment. elt. eard coming from the belt. st it after one hour of operation. I n case an y of the following occur s, ask the Komatsu distributor in your territory to replace the belt • The fan belt has elongated, leav ing little allowance for adjustm • A cut or crack is found on the b • Slipping or creaking sound is h eard coming from the When the new V-belt is set, readju st it after one hour of o peratio