MAINTENANCE SERVICE PROCEDURE
4-59
REPLACE ELEMENT IN AIR CONDITIONER RECIRCULATION AIR FILTER, FRESH AIR
FILTER 4
Remove both the recircuration air filter and fresh air filter in the same way as when cleaning, and replace them
with new parts.
For details of cleaning the recircuration air filter, see “CLEAN ELEMENT IN AIR CONDITIONER RECIRCULA-
TION FILTER (4-46)“.
For details of cleaning the fresh air filter, see “CLEAN ELEMENT IN AIR CONDITIONER FRESH AIR FILTER (4-
40)“.
CHECK ALTERNATOR, STARTING MOTOR 4
The brush may be worn or have no grease on the bearing, so contact your Komatsu distributor for inspection or
repair.
If the engine is started frequently, carry out inspection every 1000 hours.
CHECK ENGINE VALVE CLEARANCE, ADJUST 4
As special tool is required for removing and adjusting the parts, request your Komatsu distributor for service.
CHECK BRAKE DISC WEAR 4
WARNING
q When checking the brake disc wear, apply the parking brake and secure the front and rear frames with
the safety bar.
q Make sure that the brake oil temperature is less than 60°C (140°F) before checking the brake wear.
q If the disc is near the wear limit, carry out inspection at shorter intervals, regardless of the specified
inspection interval.
When checking the brake disc for wear, there are 4 places (front axle and rear axle, left and right), so use the
same procedure to check all 4 places.
1. Remove cap nut (1).
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