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[3] REPLACEMENT FUEL PRE-FILTER CARTRIDGE
• The parts and oil are at high temperature immediately after the engine is stopped, and may
cause serious burns. Wait for the temperature to go down before starting the operation.
• 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 fire or flame close.
• Genuine Maeda fuel filter cartridges use a special filter that has highly efficient filtering ability.
When replacing the filter cartridge, always use a genuine Maeda parts.
• The common rail fuel injection system used on this machine consists of more precise parts
than the conventional injection pump and nozzle. If any part other than a genuine Maeda filter
cartridge is used, dust or dirt may get in and cause problems with the injection system. Always
avoid using substitute parts.
• When carrying out inspection or maintenance of the fuel system, pay more attention than
normal to the entry of dirt. If dirt is stuck to any part, use fuel to wash it off completely.
• Prepare a container to catch drain fuel.
• Prepare a filter wrench.
1. Open the pump room door on the right side of the machine.
2. Set valve (1) at the side of the fuel pre-filter cartridge to the shut
position (S).
3. Set the container to catch the fuel under the pre-filter cartridge.
4. Loosen drain valve (2), then drain all the water and sediment in
the transparent cap (3) and also the fuel accumulated in filter
cartridge (4).
5. Using a filter wrench, turn transparent cap (3) counterclockwise
to remove it. (This cap is used again.)
6. Using a filter wrench, turn cartridge (4) counterclockwise to
remove it.
7. Install transparent cap (3) to the bottom of the new filter cartridge.
(When doing this, always replace O-ring (5)).
8. When installing, apply oil to the packing surface and bring the
packing surface into contact with the seal surface of filter
cartridge (4) and then tighten it further by 1/4 to 1/2 turns.
If the transparent cap is tightened too much, the O-ring will be damaged and this will cause leakage of
fuel; if it is not tightened enough, fuel will leak through the gap at the O-ring. To prevent these problems,
always tighten securely to the fixed tightening angle.
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