Komatsu WA380-8, Operation & Maintenance Manual, Page: 367 / 432

3.
Loosen nut (5) which is installed to the bracket first, and
then tighten bolt (6). Compressor (3) moves in direction A,
and compressor belt (7) can be stretched.
4.
After adjusting the belt tension properly, tighten nut (5) until
it touches boss (8) and tighten it further in direction B.
Tightening torque: 153 to 190 Nm {15.5 to 19.5 kgm}
5.
Tighten bolts (1) and (2), and fix bracket (4).
Tightening torque
Bolt (1): 98 to 123 Nm {10 to 12.5 kgm}
Bolt (2): 98 to 123 Nm {10 to 12.5 kgm}
NOTICE
• Check each pulley for damage, wear of the V-
groove, and the wear of the V-belt. In particular, be
sure to check that the V-belt is not touching the
bottom of the V-groove.
• Replace the belt with a new one if the belt is
stretched and has no allowance for adjustment, or
has slipping sound or squeak because of cuts or
cracks of the belt.
• When the new V-belt is installed, readjust it after
operating for 1 hour.
METHOD FOR CHECKING LOOSENESS OF WHEEL HUB BOLTS, RETIGHTEN-
ING BOLTS
Loosening of wheel hub bolt (1) accelerates the wear of the tires and causes accidents.
1.
Check the bolt for loosening and tighten it further if neces-
sary.
Always turn the bolts in the direction of tightening.
Tightening torque: 824 to 1030 Nm {84 to 105 kgm}
2.
If the bolt is broken, replace all of the bolts of the wheel.
METHOD FOR CLEANING AIR CONDITIONER RECIRC AIR FILTER
k k
WARNING
When using conditioner fresh air filter, there is a danger that dirt may scatter and cause personal injury.
Always wear protective equipment such as protective eyeglasses and dust mask.
1.
Loosen knob (1) and tilt the top of filter inspection cover (2)
together with the filter.
MAINTENANCE MAINTENANCE PROCEDURE
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