Engine Adjustments; Drive Belt Adjustment; Electronic Governor - Westerbeke 8.0KW-60Hz ENDT 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.
ELECTRONIC GOVERNOR
The 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
th~re
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 generator.
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"
jarn nut and unscrew the actuator.
S. 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 sUlface 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.
1-(---13/16" TO 7/8"
STANDARD
Note: If the unit does not shut down properly when
testing. Loosen the jam nut and tum the actuator in
1/8 - Y4 of a turn until proper shutdown is achieved.
Engines
&
Generators
24