Komatsu PC290LC-6K Operation & Maintenance Manual page 216

24. SERVICE PROCEDURE
24.8.3 CLEAN, CHECK TURBOCHARGER
Contact your Komatsu distributor for cleaning or inspection.
24.8.4 CHECK ALTERNATOR, STARTING MOTOR
The brush may be worn, or the bearing may have run out of grease,
so contact your Komatsu distributor for inspection or repair. If the engine
is started frequently, carry out inspection every 1000 hours.
24.8.5 CHECK VIBRATION DAMPER
Check that there are no cracks or peeling in the outside surface of
the rubber.
If any cracks or peeling are found, contact your Komatsu distributor to
have the parts replaced.
24.8.6 CHANGE ANTIFREEZE
Follow the procedure of 24.2.2 "CLEAN INSIDE OF COOLING SYS-
TEM" for draining and refilling the cooling system.
24.8.7 CHECK AND ADJUST VALVE CLEARANCE
Follow the procedure of 24.7.5 "CHECK AND ADJUST VALVA
CLEARANCE" 1000 hour service.
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