3-78 INSPECTION AND MAINTENANCE
DE engine
Air bleeding screw
DV engine
Air bleeding
9) Air bleeding of fuel system
Bleeding to fuel system must be performed when
fuel filter has been removed to clean or when the
screw
engine has been stopped due to lack of fuel.
Air bleeding procedure
*
(1) Turn the feed pump cap anti-clockwise.
(2) Loosen the bleeder screws of the fuel filter.
(3) Hold down and then pull up the feed pump
MEC0024
MTC0191
cap repeatedly until fuel without air bubbles
comes out through the air bleeder screws.
(4) After air has been drained out completely,
DDC engine
tighten the air bleeder screw of fuel filter.
(5) Hold down and then pull up the fuel pump
cap repeatedly to check fuel supply resis-
tance. To close the cap, press it firmly down
and turn it clockwise.
(6) After air-bleeding work, start the engine and
check up the leakage of fuel arround air
bleeder screws.
Primary
fuel filter
secondary
fuel filter
MTC0181
MTC0200
MTC0220
*
Air bleeding procedure(DDC engine)
Hold up and down repeatedly the priming
pump on the primary filter to check up the
fuel feeding resistance
Caution
When fueling, take special care in keeping
cleanliness of the fuel. Dirty fuel will cause fuel
system problems or premature wear of injection
pump or injection nozzle. Therefore, thoroughly
remove sediments in the fuel tank regularly.
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Summary of Contents for Novus F3CBF
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