Westerbeke 50 - Fuel System Bleeding Procedures

BLEEDING PROCEDURES BY MODEL
1. Initial Engine Start-up (Engine stoppage due to lack of fuel)
a. Insure that the fuel tank (s) is filled with the proper
grade of diesel fuel.
b. Fill any large primary filter/water separator with clean
diesel fuel that is installed between the fuel tank and
engine. To attempt to fill any large primary filter using
the manual priming lever on the engine mounted fuel lift pump
may
prove futile or require a considerable amount of priming.
c. Turn the fuel selector valve to "On". Systems with more
than one tank insure that fuel returning is going to the
tanks being used.
The above procedures are basic for all initial engine start-ups or for
restarting engines stopping due to lack of fuel.
WESTERBEKE W7 AND WPD4 GENERATOR (3600 RPM) (Figure 1)
1. with the use of a 5/16 box wrench or common screw driver, open the
bleed screw one or two turns on the outgoing side of the engine
mounted secondary fuel filter (Bleed point A). with firm strokes
on the lift pump priming lever, bleed until fuel free of air
bubbles flows from this point. Stop pr iming and gently tighten
the bleed screw.
2. With a 5/8 open end wrench loosen one to two turns the nut
securing the injector line to the injector (Bleed point B).
Decompress the eng ine with the lever on the top of the cylinder
head. Crank the eng ine over with the starter. (W7: ensure that
the engine stop lever is in the run position and the throttle is
full open.) (4KW: use the defeat position while cranking.) Crank
the engine until fuel spurts by the nut and line. Stop cranking
and tighten the 5/8 nut and proceed with normal starting proce-
dures.
WESTERBEKE W30 (Figure 2), W40 & WPOlO, l2~, 15 (Figure 3), W50 &
WEO 15 (Figure 4), W80 & BR 30 (Figure 5), W120 & BR 45 (Figure 5)
1. Open the banjo bolt on top of the engine mounted secondary fuel
fil ter 1-2 turns (Bleed Point A). Wi th firm stroke on the fuel
lift pump priming lever, bleed until fuel free of air bubbles
flows from this point. Stop priming and tighten the bolt.
2. On the fuel inj ection pump body is a 5/16 bleed screw (Bleed
Point B). This may be mounted on a manifold with a pressure
switch. Open this one or two turns (do not remove it) and with
the pr iming lever bleed until fuel free of air bubbles flows.
Stop priming and tighten the bleed screw.
3. On the control cover of the inj ection pump (Bleed Point C) is a
5/16 bleed screw. Open this screw one to two turns and proceed as
in Step 2. (Note: Bypass this bleed point on the W30 inj ection
pump. )
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