NOTICE
Park the machine on flat ground and stop the engine. When more than 30 minutes elapse after stopping
the engine, check the oil level.
1.
Open the door on the left side of the machine.
2.
Remove plug (P).
If the oil is insufficient, add it according to the following pro-
cedure.
1)
Remove cap (F) of the oil filler port.
2)
Add oil through oil filler port until it reaches to the low-
er edge of the hole of plug (P).
NOTICE
If excess oil is supplied, drain it to the specified
amount. It will cause overheat.
If the oil level is near the lower edge of the hole of plug (P),
the oil amount is proper.
3.
Install plug (P) and cap (F).
4.
Close the door.
METHOD FOR REPLACING FUEL MAIN FILTER CARTRIDGE
WARNING
• After the engine stops, all parts are still very hot, so do not replace the filter immediately. Wait until
all of parts 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.
• When opening the air bleeding plug of the fuel filter head, take care. There may be remaining pres-
sure and fuel may spout out.
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 inspection and maintenance of the fuel system, be careful not to let any dirt or
dust get in, more than ever before. If dust sticks to the fuel system, wash it off thoroughly with fuel.
Items to be prepared
• Container to receive the drained fuel
• Filter wrench
MAINTENANCE MAINTENANCE PROCEDURE
4-61
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