Jungheinrich DFG 425 Operating Instructions Manual page 92

Replacing the fuel filter
Drain the fuel from the filter into a
suitable container.
Undo the fuel filter (13) with a filter
wrench and manually unscrew it.
F
Dispose of the fuel filter and fuel in
accordance with environmental regula-
tions.
– Before assembling, apply a thin layer
of diesel to the O ring.
– Thoroughly clean the raised faces of
the filter flange.
– Apply a thin layer of diesel to the seal
of the new fuel filter.
– Manually screw in the fuel filter until
the seal contacts the filter flange.
– Tighten the fuel filter another third of a turn.
– Bleed the fuel system
Bleeding the fuel system
F
Collect any emerging fuel and dispose of it in accordance with environmental
regulations.
– Open the discharge screw (12).
– Apply the manual pump lever on the fuel pump (11) until fuel escapes from the
discharge screw without bubbles.
– Tighten the discharge screw.
– Set the ignition / starter key to the I position.
– Wait for 10 seconds.
– Repeat the process until the motor starts up.
M
While running the motor check the fuel filter, the discharge valve and the union nuts
of the injection nozzles for leaks.
Z
If the motor does not start up or stops after a short time, repeat the bleeding
procedure.
11
12
13
F 15