Komatsu WA500-6H, Operation & Maintenance Manual, Page: 319 / 412

4.9 Service procedure
Maintenance Every 500 hours service
WA500-6H – VEAM430100
4-65
11. After replacing the filter cartridge, add oil through oil filler (F)
until the oil level is between the H and L marks on the dip-
stick (G).
12. Run the engine at low idling for short time, then stop the
engine, and check that the oil is between the H and L marks
on the dipstick. For details, see "Check oil level in engine oil
pan, add oil (3-97)".
Replace fuel pre-filter cartridge
WARNING
z
Engine is at high temperature immediately after the machine
has been operated. Wait for engine to cool down before
replacing the filter.
z
High pressure is generated inside the engine fuel piping sys-
tem 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.
z
Do not bring fire or sparks near the fuel.
NOTE
z Genuine KOMATSU fuel filter cartridges use a special filter
that has highly efficient filtering ability. When replacing the
filter cartridge, always use a genuine KOMATSU part.
z The common rail fuel injection system used on this machine
consists of more precise parts than the conventional injec-
tion pump and nozzle.
If any part other than a genuine KOMATSU filter cartridge is
used, dust or dirt may get in and cause problems with the
injection system. Always avoid using substitute parts.
z
When carrying out inspection or maintenance of the fuel sys-
tem, pay more attention than normal to the entry of dirt. If
dirt is stuck to any part, use fuel to wash it off completely.
z
Prepare a container to catch drain fuel.
z
Prepare a filter wrench.
GK050237
G
Engine
stopped Engine
idling