Komatsu WA800-3E0, Руководство по эксплуатации и техническому обслуживанию

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SERVICE PROCEDURE
MAINTENANCE
4-52
CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST 4
Carry out the inspection and adjustment work after removing
cover (1).
CHECKING
The deflection should be approx. 12.5 to 16.5 mm when
pressed with a finger force of approx. 98.1 N (10 kg) at a point
midway between the air conditioner compressor pulley and
drive pulley.
When using a belt tension gauge, the tension should be in a
range of 353 to 530 N (36 to 54 kg).
CHECK WHEN CHANGING THE V-BELT
The deflection should be approx. 9 to 12.5 mm when pressed with a finger force of approx. 98.1 N (10 kg) at a
point midway between the air conditioner compressor pulley and drive pulley.
When using a belt tension gauge, the tension should be in a range of 530 to 745 N (54 to 76 kg).
ADJUSTING
1. Loosen lock nut (1).
2. Turn adjustment nut (2) to adjust so that the belt tension is
the specified value.
Deflection when cheking: [98.1 N (10 kg)] 12.5 to 16.5 mm
Deflection when replacing: [98.1 N (10 kg)] 9 to 12.5 mm
3. After adjusting, tighten lock nut (1).
4. Check each pulley for damage, wear of the V-groove, and
wear of the 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.
If the V-belt has been replaced with a new part, there will be initial elongation, so inspect and adjust it again
after one-hour of operation.