Every 1000 Hours Service; Replace Fuel Main Filter Cartridge - Komatsu GALEO HM350-2 Operation & Maintenance Manual

SERVICE PROCEDURE

EVERY 1000 HOURS SERVICE

Maintenance for every 50, 250 and 500 hours should be carried out at the same time.

REPLACE FUEL MAIN FILTER CARTRIDGE

After the engine has been operated, all parts are at high temperature, so do not replace the filter immediately. Wait for all parts
to cool down before starting the operation.
High pressure is generated inside the engine fuel piping system when the engine is running.
When replacing the filter, wait for at least 30 seconds after stopping the engine to let the internal pressure go down before
replacing the filter.
Do not bring any fire or flame close.
NOTICE
Genuine Komatsu fuel filter cartridges use a special filter that has highly efficient filtering ability. When replacing the filter
cartridge, always use a genuine Komatsu part.
The common rail fuel injection system used on this machine consists of more precise parts than the conventional injection
pump and nozzle.
If any part other than a genuine Komatsu filter cartridge is used, dust or dirt may get in and cause problems with the injection
system. Always avoid using substitute parts.
When carrying out inspection or maintenance of the fuel system, pay more attention than normal to the entry of dirt. If dirt is
stuck to any part, use fuel to wash it off completely.
Prepare a filter wrench
After replacing the fuel pre-filter cartridge, replace the fuel main filter cartridge.
1. Set the container to catch the fuel under the filter cartridge.
2. Using a filter wrench, turn filter cartridge (1) counterclockwise
on remove it.
3. Clean the filter holder, coat the packing surface of the new filter
cartridge thinly with oil, then install the filter cartridge to the filter
holder.
NOTICE
Do not add fuel to the fuel main filter cartridge.
4. When installing, tighten until the packing surface contacts the seal surface of the filter holder, then tighten it 3/4
of a turn.
If the filter cartridge is tightened too far, the packing will be damaged and this will lead to leakage of fuel. If the
filter cartridge is too loose, fuel will also leak from the packing, so always tighten the correct amount.
When tightening with a filter wrench, be extremely careful not to dent or damage the filter.
5. After replacing filter cartridge (1), loosen air bleed plug (2).
Do not loosen the plug at the filter stand of the fuel prefilter. If it is loosened, air is not bled.
6. Fill the fuel tank with fuel.
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WARNING
MAINTENANCE