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MAINTENANCE PROCEDURE
METHOD FOR CHECKING VIBRATION DAMPER
Ask your Komatsu distributor for inspection of the vibration damper.
METHOD FOR REPLACING KCCV FILTER ELEMENT
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
•
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 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 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.
•
Always stop the engine and clean around the KCCV before replacing the element.
Prepare the special wrench for KCCV and a container to catch the oil.
The KCCV ventilator is located in the positions shown in the
figure.
For the use of the special wrench, see the figure.
4-72
k
k
WARNING
MAINTENANCE
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