Check, Adjust Air Conditioner Compressor Belt Tension; Check And Adjust Air Conditioner Compressor Belt Tension - Komatsu PC130-7 Operation & Maintenance Manual

MAINTENANCE PROCEDURE

CHECK, ADJUST AIR CONDITIONER COMPRESSOR BELT TENSION

Checking
Deflection (a) should be 6 to 10 mm at a point midway between
the fan pulley and compressor pulley when pressed with a fin-
ger force of approx. 58.8 N (6 kgf).
(A): Compressor pulley
(B): Fan pulley
(C): Crankshaft pulley
Adjustment
1. Loosen bolts (1) and (2).
q 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.
2. Loosen bolt (1) and bolts (2), then move compressor (3) to
adjust.
3. When the position of the compressor is determined, tighten
bolts (1) and (2) to hold it in position.
4. Check for damage to the pulleys, and wear of the V-groove and V-belt. Be particularly careful to check that the
V-belt is not in contact with the bottom of the V-groove.
5. If the belt has elongated and there is no more allowance for adjustment, or if the belt is cut or cracked, replace
the belt.
6. After replacing the V-belt, operate for one hour, then adjust again.
4-64
MAINTENANCE
4
4
4