Komatsu PW130ES-6K Operation & Maintenance Manual page 215

SERVICE PROCEDURE
CHECK AND ADJUST TENSION OF AIR CONDI-
TIONER COMPRESSOR BELT
Testing
The belt should deflect 14-16 mm when pressed with a finger
force of approx. 6 kg at a point midway between the crankshaft
pulley and the compressor pulley.
Adjusting
1. Loosen 2 bolts (1) and 2 bolts (2), and move compressor (3)
to adjust.
2. When the deflection is correct, tighten bolts (1) and (2) to hold
the compressor in position.
3. Check each pulley for damage, and check the V-groove and
V-belt for wear. In particular, check that the V-belt is not con-
tacting the bottom of the V-groove.
4. If the V-belt is streched and cannot be adjusted any further, or
if there are any cuts or cracks, replace the V-belt.
5. After replacing the V-belt, adjust again after one hour of oper-
ation.
214
MAINTENANCE.
Compressor pulley
14 – 16 mm
Crankshaft pulley
AM096280A