4.
Open the fuel filter inspection cover on the right side of the
machine.
5.
Remove the oil level check plug (G) and check the oil lev-
el.
If the oil level is close to the lower edge of the hole of plug
(P), the oil level is appropriate.
6.
If the oil is insufficient, open the fuel filter inspection cover
on the right side of the machine, remove the plug of oil fill-
er port (F), and add oil.
Add oil to close to the lower edge of the hole of oil level
check plug (G).
7.
Install the oil level check plug (G) and the plug of oil filler
port (F).
8.
Install the cover (1).
METHOD FOR REPLACING FUEL MAIN FILTER CARTRIDGE
• After the engine stops, all parts are still very hot, so do not replace the filter immediately. 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.
Items to be prepared
• Container to receive the oil
• Filter wrench
1.
Open the fuel filter inspection cover on the right side of the machine.
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