Komatsu PW160-7K Series Operation And Maintenance Manual page 284

SERVICE PROCEDURE
ADJUSTING
With the automatic belt tensioner, no adjustment is required.
REPLACEMENT
To replace the drive belt, place a 3/8 in. drive rachet (2) in the 3/8
in. square drive hole in the belt tensioner. Push the rachet "UP" to
loosen the tensioner. Remove the old belt (1). Inspect belt ten-
sioner. The tensioner pulley should spin freely with no rough
spots detected under hand pressure. Install the new belt.
REMARK
The belt tensioner is spring loaded and must be pivoted away
from the belt. Pivoting in the wrong direction can result in damage
to the belt tensioner.
CHECK, ADJUST TENSION OF AIR CONDITIONER
COMPRESSOR BELT
Checking
Press the belt at a point midway between the drive pulley and
compressor pulley with a finger force of approx. 58.8 N (6 kgf)
and check that the deflection is 5 - 8 mm.
Adjusting
1. Loosen bolts (1) and (2).
Bracket (4) holds the compressor in place. When bolts (1)
❍
and (2) are loosened, bracket (4) moves with the securing
position of bolt (2) as a fulcrum.
284
2
Compressor pulley
5 - 8mm
Drive pulley
MAINTENANCE
1
AD32942A