Komatsu D31EX-21, Руководство по эксплуатации и техническому обслуживанию, Страница: 225 / 256

MAINTENANCE
SERVICE PROCEDURE
4-45
EVERY 500 HOURS SERVICE 4
Maintenance for every 50 and 250 hours service should be carried out at the same time.
REPLACE FUEL FILTER CARTRIDGE 4
WARNING
q
Engine is at high temperature immediately after the machine has been operated. Wait for engine to
cool down before replacing the filter.
q
Do not bring fire or sparks near the fuel.
Prepare a filter wrench and a container to catch the fuel.
1. Set the container to catch the fuel under the filter cartridge.
2. Using a filter wrench, turn filter cartridge (1) counterclock-
wise to remove it.
3. Clean the filter holder, fill a new filter cartridge with clean
fuel, coat the packing surface with engine oil, then install it
to the filter holder.
4. When installing, tighten until the packing surface contacts the seal surface of the filter holder, then tighten it up
1/2 to 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 to the correct amount.
5. After completing the replacement of filter cartridge (1), bleed the air.
6. Bleed the air as follows.