Method For Replacing Fuel Main Filter Cartridge - Komatsu D61EX-24 Operation & Maintenance Manual

MAINTENANCE PROCEDURE

METHOD FOR REPLACING FUEL MAIN FILTER CARTRIDGE

• Immediately after the engine is stopped, all parts are still very hot, so do not replace the filter imme-
diately. Wait for all of parts to cool down before starting the work.
• 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 open flame close.
NOTICE
• Komatsu genuine fuel filter cartridges use a special filter that has highly efficient filtering ability.
When replacing parts, Komatsu recommends using Komatsu genuine parts.
• The common rail fuel injection system used on this machine consists of more precise parts than
those in the conventional injection pump and nozzles. If any cartridge other than a Komatsu genu-
ine filter cartridge is used, dust or dirt may get in and cause problems with the injection system.
Never use a substitute.
• When performing the inspection or maintenance of the fuel system, pay more attention than normal
to the entry of dirt. If dirt sticks to any part, use fuel to wash it off completely.
Prepare a filter wrench and a container to catch the fuel.
1.
Open the fuel tank inspection cover on the right side of the
machine.
2.
Turn fuel supply valve (1) to CLOSE position (C).
3.
Remove the engine side cover on the left side of the ma-
chine.
4.
Place a container under filter cartridge (2) to catch the fuel.
5.
Turn filter cartridge (2) counterclockwise by using the filter
wrench, and remove it.
NOTICE
• Do not fill the new filter cartridge with fuel.
• Remove cap (B) at center and install the filter car-
tridge.
6.
Clean the filter head.
4-58
k k
WARNING
MAINTENANCE