Testing And Adjusting Air Conditioner Compressor Belt Tension - Komatsu PC130-7 Shop Manual

TESTING AND ADJUSTING
TESTING AND ADJUSTING
AIR CONDITIONER
COMPRESSOR BELT
TENSION
TESTING
1. Open the engine hood and remove the belt cover
from above the air conditioner compressor.
2. Press the intermediate point of the belt between
the fan pulley and alternator pulley with a finger
and measure deflection "a" of the belt.
• Force to press belt: Approx. 58.8 N {6 kg}
• Deflection (a): 6 – 10 mm
20-118
(1)
TESTING AND ADJUSTING AIR CONDITIONER
COMPRESSOR BELT TENSION
ADJUSTING
a If the deflection of the belt is abnormal, adjust it
according to the following procedure.
1. Loosen compressor bracket mounting bolts (1)
and (2).
2. Adjust the belt tension by moving compressor (3)
and bracket (4) together.
a Use a bar, etc. to move the bracket (Do not
push the compressor directly with a bar, etc.)
3. Tighten mounting bolts (2) and (1).
a Check breakage of the pulleys, wear of the
V-grooves, and contact of the belts and V-
grooves.
a If a belt is lengthened to the adjustment limit,
cut, or cracked, replace it with new one.
4. After finishing adjustment, return the covers.
a If a V-belt is replaced, adjust its tension again
after 1 operating hour.
PC130-7