Komatsu HM400-1 User Manual

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MAINTENANCE
SERVICE PROCEDURE
EVERY 1000 HOURS SERVICE
Maintenance for every 50, 250 and 500 hours should be carried out at the same time.
REPLACE CORROSION RESISTOR CARTRIDGE
WARNING
All the engine parts are at high temperature after the engine has been operated, so never replace the cartridge immediately after
finishing operations.
Wait for the oil to cool down before replacing the cartridge.
Prepare a filter wrench
1.
Set valve (1) at the top of the corrosion resistor to the CLOSED
position, to close it.
2. Set the container to catch the water under the cartridge.
3.
Using a filter wrench, remove cartridge (2).
4.
Clean the filter holder, coat the seal surface of the new
cartridge thinly with engine oil, then install the cartridge.
5.
When installing, tighten until the gasket contacts the seal
surface of the filter holder, then tighten a further 2/3 turns.
If the filter cartridge is tightened too far, the gasket will be
damaged and this will lead to leakage of water. If the filter is too
loose, water will also leak from the gap at the gasket, so always
tighten the correct amount.
6.
Set valve (1) to the OPEN position to open it.
7.
After replacing the cartridge, start the engine and check that there is no leakage of water from the filter seal
surface. If there is any leakage of water, check the tightening of the filter cartridge.
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Komatsu HM400-1 Specifications

General

Brand	Komatsu
Model	HM400-1
Category	Trucks
Language	English