Testing And Adjusting Air Conditioner Compressor Belt - Komatsu Galeo PC800-8 Shop Manual

SEN00786-02
Testing and adjusting air
conditioner compressor belt
Testing
1. Open the engine compartment cover on the con-
trol valve side and remove the cover of the air
conditioner compressor belt.
2. Press the intermediate point between the air
conditioner compressor pulley and drive pulley
with a finger and measure deflection (a).
a Deflection (a) when pressing force is approx.
58.8 N {approx. 6 kg}: 10 – 15 mm
Adjusting
a If the deflection is abnormal, adjust it according
to the following procedure.
1. Loosen the bolts and nuts in the order of (1), (2),
and (3).
2. Rotate nut (4) to move compressor (5) and
adjust the belt tension.
a If nut (4) is
• turned clockwise, the belt is loosened.
• turned counterclockwise, the belt is
tensed.
a Check each pulley for breakage, check the
V-grooves and V-belts for wear, and check
that the V-grooves and V-belts are in good
contact with each other.
a If the belts are so lengthened that their ten-
sion cannot be adjusted any more or they
have a cut or a crack, replace them.
22
3. Tighten nuts and bolts in the order of (3), (2),
and (1).
a When the V-belt was replaced, measure its
deflection again after one-hour operation
and then readjust it if necessary.
30 Testing and adjusting
PC800, 850-8