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30 Testing and adjusting
Bleeding air from fuel circuit
a If fuel is used up or if a fuel circuit part is
removed and installed, bleed air from the fuel
circuit according to the following procedure.
Stop the machine on a level ground and
lower the work equipment to the ground.
1.
Fill the fuel tank with fuel.
a Add oil until the oil filler float reaches the
maximum rising position.
2.
Open the side cover of the pump room.
3.
Loosen knob (1) of the feed pump and pull it
out, and then operate it forward and backward.
a Move the knob until it becomes heavy.
a The plug at the top of the fuel main filter
does not need to be removed.
4.
After bleeding air, push in and tighten knob (1).
PC130-8
1
SEN04114-06
23
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Troubleshooting
