.
1.
Set the machine on a dry downhill slope, pull the parking brake
lever fully to the LOCK position, and check if the parking brake
can hold the machine in position.
2.
If any abnormality is found, please contact your Komatsu
distributor.
CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST
1. Open the engine side cover on the left side of the chassis.
2.
Standard deflection "a" between air conditioner compressor
pulley (1) and fan pulley (2) when pressed with a thumb
(approx. 98 N (10 kg)) should be approx. 9.5 to 13.5 mm (0.4
to 0.5 in).
When a belt tension gauge is used, the standard tension is
within a range of 353 to 549 N (36 to 54 kgf).
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 kgf)) should be approx. 7 to 10 mm (0.28 to 0.4 in).
When a belt tension gauge is used, the standard tension is within a range of 533 to 745 N (54 to 76 kgf).
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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