Check Air Conditioner Compressor Belt Tension, Adjust - Komatsu ecot3 Operation And Maintenance Manual

MAINTENANCE PROCEDURE

CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST

Checking
Press the belt with a finger force of approximately. 60 N (6.2 kg) at
a point midway between drive pulley (1) and compressor pulley (2).
Deflection (A) should be 6.3 to 8.7 mm (0.248 to 0.343 in).
Adjustment
1. Loosen bolts (1) and (2).
Compressor (3) is installed to bracket (4), so when bolts (1)
and (2) are loosened, it becomes possible to move bracket
(4) with the mounting position of bolt (2) as the 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.
NOTICE
Check each pulley for damage, wear of the V-groove, and wear of the V-belt. In particular, be sure to check that the V-belt is not
touching the bottom of the V-groove.
In case any of the following occurs, ask the Komatsu distributor in your territory to replace the belts with new ones.
• The fan belt has elongated, leaving little allowance for adjustment.
• A cut or crack is found on the belt.
• Slipping or creaking sound is heard coming from the belt.
When the new V-belt is set, readjust it after 1 hour of operation.
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MAINTENANCE