Komatsu HB215LC-3, Operation & Maintenance Manual

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METHOD FOR REPLACING FUEL PREFILTER CARTRIDGE
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WARNING
• Do not replace the filter immediately after the engine is stopped. The parts are still very hot. 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 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 catch drained oil
• Filter wrench
1.
Turn the valve (1) at the bottom of the fuel tank to CLOSE
position (S).
2.
Open the door on the right side of the machine.
3.
Place a container to catch the fuel under the fuel prefilter
cartridge (2).
4.
Loosen the drain valve (3) and drain the water and sedi-
ments from transparent cup (4), and also drain all the fuel
accumulated in the filter cartridge (2).
5.
Remove the connector (5). Wrap the removed connector
with a plastic bag, etc. to prevent fuel, oil or water from
getting on the connector.
MAINTENANCE MAINTENANCE PROCEDURE
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