Action 40. Replacing the filtering ele-
ment of the fuel fine filter
Remove the plug (1) and drain the
deposit.
Unscrew four nuts and remove the
cover (3).
Draw out the filtering element (2).
Wash the casing and the cover with
pure diesel fuel.
Check the cover gasket and replace
it, if necessary.
Install a new filtering element.
Fill the filter casing with fuel.
Replace the cover and tighten the
fastening nuts.
IMPORTANT! After cleaning or re-
placement of the filtering element (or
after fuel work-out from the tanks), air
should be removed from the system
prior to starting the engine.
To bleed air from the system:
• Loosen the plug (1) of the fuel fine
filter.
• Unscrew the boost pump handle (3).
• Check whether the fuel tank valve is
open and there is fuel in the tanks.
• Loosen the plug (2) on the fuel
pump.
• Bleed the system quickly by means
of the boost pump until clean fuel
free of bubbles appears from under
the plugs. Tighten the fuel pump plug
(2). Continue bleeding the system
until fuel free of air bubbles appears
from under the fuel fine filter plug (1).
• Screw the boost pump handle (3).
NOTE: If the engine starting is imped-
ed, loosen the fuel line union nut of
each injector and remove air from the
lines by rotating the diesel engine with
the starter. Rotate the engine for
10…15 s and then tighten the union
nut.
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