Table of Contents
Advertisement
MAINTENANCE PROCEDURE
8.
Check that the work equipment goes down to the ground
under its own weight.
In the following cases, the gas charge pressure of the accumulator has gone down. Contact your Komatsu dis-
tributor.
•
Work equipment does not go down
•
Stops while going down
METHOD FOR CHECKING ALTERNATOR
Ask your Komatsu distributor to have the alternator checked.
If the engine is started frequently, have this inspection performed every 1000 hours.
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
After the engine has been operated, all the parts are still very hot. Do not replace the filter element im-
mediately. Wait for all of parts to 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 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.
Prepare the special wrench for KCCV and a container to receive the oil.
1.
Remove the engine side cover (1) on the right side of the
machine.
4-62
k
k
WARNING
MAINTENANCE
Advertisement
Chapters
Table of Contents
