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MAINTENANCE
SERVICE PROCEDURE
CHECK PARKING BRAKE
1.
Set the machine on a dry downhill slope, press the parking
brake switch to the ON position, and check if the parking brake
hold the machine in position.
2.
If any problem is found, please contact your Komatsu
distributor.
CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST
(Machine equipped with cab) (If equipped)
CHECKING
The standard deflection between the air conditioner compressor
pulley and crank pulley when pressed with a thumb (approx. 98 N
(10 kg)) should be approx. 11 to 15 mm (0.4 to 0.6 in).
When a belt tension gauge is used, the standard tension is within
a range of 353 to 530 N (36 to 54 kg).
CHECK WHEN CHANGING THE V-BELT
The standard deflection between the air conditioner compressor pulley and fan pulley when pressed with a thumb
(approx. 98 N (10 kg)) should be approx. 8 to 11.5 mm (0.315 to 0.5 in).
When a belt tension gauge is used, the standard tension is within a range of 530 to 745 N (54 to 76 kg).
REMARK
When the belt has been replaced with a new part, a high tension is necessary, so the initial tension is in the value
given above.
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