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MAINTENANCE PROCEDURE
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 CHECKING 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.
METHOD FOR REPLACING KCCV FILTER ELEMENT
Immediately after the engine is stopped, all the parts are still very hot. Do not replace the filter element
immediately. Wait for all parts to cool down before starting the work. Always stop the engine before
starting the replacement work.
NOTICE
•
Komatsu recommends using Komatsu genuine parts for replacement parts.
•
If the engine is operated without the filter element, the turbocharger and aftercooler become dirty
and their performance will lower and it can cause engine problems such as overrun caused by suc-
tion of oil. Never try such practice.
•
The filter element cannot be cleaned. Flushing or regenerating of the filter element will degrade per-
formance of the filter. As a result, the turbocharger and aftercooler become dirty and the perform-
ance 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
•
Container to catch the drained oil
•
Special wrench for KCCV
The KCCV ventilator is located in the position shown in the fig-
ure.
For the use of the special wrench, see the figure.
4-74
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WARNING
MAINTENANCE
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