Installation manual
ENGINE
ADJUSTMENTS
DRIVE
BELT
ADJUSTMENT
Proper inspection, service and maintenance
of
the drive belts
is
important for the efficient operation
of
your engine (see
Drive Belts under MAINTENANCE SCHEDULE).
Drive belts must be properly tensioned. Loose drive belts win
not provide proper alternator charging and will eventually
damage the alternator. Drive belts that are too tight will pun
the alternator out
of
alignment and/or cause the alternator to
wear out prematurely. Excessive drive belt tension can also
cause rapid wear
of
the belt and reduce the service life
of
the
coolant pump's bearing. A slack belt or the presence
of
oil on
the belt can cause belt slipping, resulting
in
high operating
temperatures and tachometer variations.
The drive belt
is
properly adjusted
if
the belt can be deflected
no less than 3/8 inch (lOmm) and no more than
112
inch
(12mm)
as
the belt
is
depressed with the thumb at the mid-
point between the two pulleys on the longest span
of
the belt.
A spare belt or belts should always be carried on board.
A
WARNING:
Never
attempt
to
check
Dr
adjust
the
drive
belt's
tension
while
the
engine
is
in
operation.
Adjusting
Belt
Tension
1.
Loosen the alternator adjusting strap bolt and the base
mounting bolt.
2.
With the belt loose, inspect for
wear,
cracks and frayed
edges.
3.
Pivot the alternator on the base mounting bolt to the left
or right as required, to loosen
or
tighten.
4. Tighten the base mounting bolt and the adjusting strap
bolt.
5. Run the engine for about 5 minutes, then shut down and
recheck the belt tensions.
STARTER
AND
ALTERNATOR
SERVICE
The starter and the alternator should be serviced every 1200
operating hours.
Starter
commentator cleaning.
Alternator slip ring cleaning.
Carbon
brushes
and
the
brush
contact check.
Refer to your WESTERBEKE SERVICE MANUAL.
FUEL
INJECTOR
HOLOOWN
NUTS
FUEL
INJECTORS
In case
of
severe vibrations and detonation noise, have the
injectors checked and overhauled
by
an authorized fuel
injection service center.
Poor fuel quality, contaminants and
loss
of
positive fuel pressure to the injection pump can result
in injector faults. Since fuel injectors must
be
serviced
in
a
clean room environment, it
is
best to carry at least one extra
injector as a spare should a problem occur.
Before removing the old injector, clean the area around the
base
of
the injector to help prevent any rust
or
debris from
falling down into the injector hole.
If
the injector will not lift
out easily and is held in by carbon build-up
or
the like, work
the injector side-to-side with the aid
of
the socket wrench
to
free
it,
and then lift it out.
The injector seats in the cylinder head on a copper sealing
washer. This washer should be removed with the injector and
replaced with a new washer when the new injector
is
installed.
The fuel injectors should be pressure tested after
750 operating
hours.
INJECTION
STARTING
PRESSURE
2630
psi
(18.1
Mpa)
(185
Kg/em')
INJECTION
HOLDDOWN
NUTS
TORQUE
13.7
±
1.5
It-Ib
(1.9
±
0.2
Kg-m)
Engines & Generators
32