Governor - Westerbeke 8.0KW-60Hz Service Manual

ENGINE ADJUSTMENTS
NOTE: WESTERBEKE recommends that the following engine
adjustments be perfonned by a competent engine mechanic.
The information below is provided to assist the mechanic.
ENGINE SPEED (HERTZ) ADJUSTMENT
Governor
Governor Maintenance
1. Periodically lubricate the linkage arm attaching points at
the governor arm and throttle lever. Use a graphite lubri-
cant or equivalent.
The belt-driven, mechanically operated governor maintains
the engine's rpm under various load conditions. Engine speed
determines the hertz and voltage output of the generator.
NOTE: Free movement of this linkage arm is imponant for
proper governorlthrottle operation.
Governor Adjustments
Operate the generator to bring the unit up to operating
temperature before adjusting the governor.
NOTE:
If
the governor is severely out of adjustment, manually
adjust the linkage
at
no-load to obtain a safe output voltage
before proceeding with the adjustment.
There are three adjusting points on the governor
(see illustration). .
1. Increase!Decrease Speed A4justment. This adjusting bolt
sets the no-load speed of the engine. (The linkage arm
between the governor arm and throttle lever should be
adjusted to hold the throttle full open when the engine is
not running.) Make sure this linkage moves freely and
that the ball joint connectors are properly lubricated. Use
graphite lube for this purpose. Disconnect the ball joint
and apply graphite lube to the inside of the joint.
2. HunJinglReguloJion Adjustment. If the variation in
engine speed between no-load and full-load is too great,
adjust this eye bolt to draw the spring closer to the lever
hub. The increase/decrease speed bolt may need to be
adjusted as well.
If the governor surges under load, adjust this eye bolt to
move the spring away from the lever hub (check speed
adjustment).
3. Bumper Screw Adjustment. This screw is used to remove
a no-load surge
ONLY..NEVER
turn the bumper screw
into the governor so far that it increases the no-load speed.
2. Governor oil capacity - 3 ounces 10/30 engine oil.
NOTE: Do not ovelfill
the governor.
3. Change the governor oil every 250 hours of operation.
To change the oil, remove the governor from the engine,
remove the oil fill and the fill level plug, and
drain all the
oil. Reinstall on the engine and fill with 3 ounces of 10/30
engine oil. Replace the two plugs.
4. Periodically adjust the governor belt tension (see DRIVE
BELTS ADJUSTMENT). Since belts stretch slightly, this
stretching will, to some degree, affect the govenor's
action.
LINKAGE ARM
KEEP LINKAGE
WELL LUBRICATED
SPEED
(UNDER)
FILL
~
WESTERBEKE
Engines & Generators
42