Engine Adjustments; Drive Belt Adjustment; Electronic Governor (Optional); Engine Speed/Engine Shutdown - Westerbeke 8.0KW - 60Hz Operator's 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 will
not provide proper alternator charging and will eventually
damage the alternator. Drive belts that are too tight will pull
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
fresh water pumps bearing. A slack belt or the presence of oil
on the belt can cause belt slipping, resulting in high operating
temperatures.
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 or 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.
S. Run the engine for about 5 minutes, then shut down and
recheck the
belt
tensions.
ENGINE SPEED/ENGINE SHUTDOWN
Generator frequency (hertz) is a direct result of engine speed.
The engine speed throttle adjusting screws have been pre-set
at the factory.
A fuel shut off solenoid, located at the injection pump, shuts
the generator down when the control panel toggle switch is
depressed. This solenoid is pre-set at the factory.
.~ ~~
ELECTRONIC GOVERNOR (OPTIONAL)
The
Electronic Governor regulates the engine speed by
sensing the engine's RPM with a magnetic pick-up at the
flywheel. The governor's controller continuously monitors
the engines speed and if there is any discrepancy, the
controller signals the actuator and the actuator adjusts the
engine
to
the desired speed electronically.
Actuator
The following instructions are for adjusting or replacing
the actuator.
1. Shut-off the DC power to the g~nerator.
2. Disconnect the actuator wires from the wiring harness.
3. Measure the distance between the actuator and the engine
mounting surface as shown.
ACTUATOR
MEASURE FOR
REFERENCE ..
ENGINE MOUNTING
SURFACE
'JAM NUT
4. Back-off the 1 7/16" jam nut and unscrew the actuator.
5. Apply a small amount of teflon sealant to the replacement
actuator and screw the actuator into the engine's
mounting boss. Maintain the same distance between the
actuator and the engine mounting surface as previously
measured Secure the actuator's position with the jam nut.
(The standard distance is 13/16" to 7/8").
6. Reconnect the actuator wires and test the unit.
SCREWINTO .
ORIGINAL MEASURE
SPEED ADJUSTMENT
[FACTORY SET]
13/16" TO 7/8"
STANDARD
Note: If the unit does not shut down properly when
. testing. Loosen the jam nut and turn the
actuator in lIS-lf4 of a turn until proper shut
dmvn is achieved.
J
FUEL SHUT OFF SOLENOID
Engines & Generators
33