Komatsu HM400-5, Operation & Maintenance Manual

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3.
Rinse the breather in clean diesel fuel or cleaning oil, and remove dirt from inside.
Transmission
METHOD FOR CHECKING ACCUMULATOR GAS PRESSURE
Contact your Komatsu distributor to have the gas pressure checked when making periodically replacement of
safety parts or performing the legally required 2000 hour or every year service.
METHOD FOR CHECKING ALTERNATOR
The brush may be worn and the grease in the bearings may have dried out.
Ask your Komatsu distributor for inspection and repair.
METHOD FOR CHECKING AND ADJUSTING ENGINE VALVE CLEARANCE
Special tools are necessary for inspection and maintenance. Ask your Komatsu distributor to perform this work.
METHOD FOR REPLACING KCCV FILTER ELEMENT
k k
WARNING
After the engine has been operated, all of parts are still very hot. Do not replace the filter element imme-
diately.
Wait until all of parts cool down before starting the work.
NOTICE
• If the engine is operated without the filter element, the turbocharger and aftercooler become dirty
and their performance will lower and that can cause engine problems such as overrun caused by
suction of oil. Therefore, do not start the engine without the filter element.
• The filter element cannot be flushed.
Flushing or regenerating of the filter element will degrade performance of the filter. As a result, the
turbocharger and aftercooler become dirty and the performance lowers or the crankcase pressure
increases.
Never reuse the filter element since it can cause an engine failure.
• After the filter element is replaced, if KCCV is not assembled correctly, oil or blowby gas may leak.
Replace the filter element in the correct procedure.
Items to be prepared
• Special wrench for KCCV
• Container to receive drained oil
MAINTENANCE MAINTENANCE PROCEDURE
4-75