Service manual

ELECTRONIC GOVERNOR
ELECTRONIC GOVERNING SYSTEM
The system is composed of three basic components:
1. Controller - Mounted inside the instrument panel box.
2. Sensor - Installed on the generator stator housing over the
flywheel ring gear.
3. Actuator - Mounted at the front
of the engine and
attached with linkage to the throttle arm of'the injection
pump.
Controller Adjustments
1. Speed. - This adjustment is used to raise or lower engine
speed to the desired hertz.
2. Gain - This adjustment affects the reaction time
of the
actuator
to the generator/engine load changes.
NOTE:A high gain adjustment can induce an oscillating of
the actuator producing a hunting mode. In such cases, lessen
the gain adjustment.
Calibration
1. With no power to the governor (engine not running)
adjust the GAIN potentiometer to
9:00 o'clock.
2. Start the engine and adjust the speed by turning the
SPEED potentiometer clockwise to desired speed.
NOTE: Controllers are factory adjusted to minimum rpm
However, for safety, one should be capable of disabling the
engine
if an overs peed should exist.
3. At no load, tum the GAIN potentiometer clockwise until
the engine begins to hunt.
If the engine does not hunt,
physically upset the governor linkage.
4. Tum the gain potentiometer counterclockwise until the
engine runs stable.
FLYWHEEL HOUSING
•
SENSOR
PV 11039172
ELECTRONIC GOVERNOR TERMINAL
TO ELECTRONIC
CONTROLLER
Engines & Generators
57
SPEEDm
GAIN i\J
LINEAR
ACTUATOR
LINEAR ACTUATOR
(20 KW SHOWN)
KEEP ACTUATOR
LINKAGE WELL
LUBRICATED