Komatsu PC1250-11, Original Instructions Manual

Page: 361 / 452

11. After replacing the filter cartridge, add oil through oil filler
port (F).
Add oil so that the oil level is between H and L on the “EN-
GINE STOPPED” mark side of dipstick (G).
12. Run the engine at low idle for a time, then stop the engine.
Check that the oil level is between H and L on the dipstick
by referring to “METHOD FOR CHECKING OIL LEVEL IN
ENGINE OIL PAN, ADDING OIL”.
METHOD FOR REPLACING FUEL PREFILTER CARTRIDGE
k k
WARNING
• 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 the 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 catch the drained oil
• Filter wrench
MAINTENANCE MAINTENANCE PROCEDURE
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