(1) Bucket link pin (bell crank side): 1.2 ℓ
(2) Bucket link pin (bucket side): 1.2 ℓ
(3) Bucket hinge pin (2 places): 1.2 ℓ each
METHOD FOR REPLACING KCCV FILTER ELEMENT
WARNING
After the engine has been operated, all of the parts are still very hot. Do not replace the filter element
immediately. Wait for all of parts to cool down before starting the work. Always stop the engine before
starting the part replacement.
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 drained oil
• Special wrench for KCCV
MAINTENANCE PROCEDURE MAINTENANCE
4-78
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