Replace Fuel Filter Cartridge - Komatsu PC45MR-3 Operation And Maintenance Manual

MAINTENANCE PROCEDURE

REPLACE FUEL FILTER CARTRIDGE

The engine is at high temperature immediately after the machine has been operated. Wait for the engine to cool down before
replacing the filter.
Do not bring fire or sparks near the fuel.
Prepare a filter wrench
Prepare for cloth.
1. Open the engine rear cover.
2. Spread the cloth beneath the filter cartridge.
3. Using a filter wrench, turn filter cartridge (1) counterclockwise
to remove it.
If any fuel spills, wipe it up immediately with a cloth.
4. Clean the filter holder, fill the new filter cartridge with fuel, then
coat the packing surface with fuel, and install to the filter holder.
5. When installing, turn to the right to tighten until the packing
surface contacts the seal surface of the filter holder, then use
a filter wrench to tighten approx. 1 turn.
Tightening torque: 19.6 to 23.5 Nm (2.0 to 2.4 kgm , 14.5 to
17.4 lbft)
6. After replacing the fuel filter cartridge, bleed air.
For details of the procedure, see "Air Bleeding (PAGE 4-56)".
Air Bleeding
1. Fill the fuel tank with fuel.
2. Set handle (1) of the water separator to OPEN position (B).
3. Loosen air bleed bolt (2) of the water separator 2 or 3 turns.
4. When no more bubbles come out with the fuel from air bleed
bolt (2), tighten air bleed bolt (2).
5. Turn the starting switch to the ON position (B), hold it there for
10 to 15 seconds, then return it to the OFF position (A).
Air bleeding is carried out automatically by the automatic air
bleed device.
REMARK
When the machine has run out of fuel, carry out the same
procedure, to bleed the air.
4 - 56
WARNING
MAINTENANCE