Service manual

ELECTRONIC GOVERNOR
Electronic Governor System
The system is composed of three basic components:
1. Controller. Mounted in the instrument panel.
2. Sensor. Installed on the bellhousing 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 Adjustment
1. Speed. This adjustment is used to raise or lower the
engine's 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, adjust the GAIN to 9:00
o'clock.
2.
Start the engine and adjust the speed by turning the speed
pot 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 overspeed 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 stable.
FLYWHEEL HOUSING
ELECTRONIC GOVERNOR
MAGNETIC SENSOR
SENSOR
LOCKNUT-===..b~ ~F-- O.030in
FLYWHEEL _____ ~ r\"7=\
TEETH 7 v v \
!
----
I
• I 1,--. -..,.-----,
•
~
~~:-=,---,
SENSOR
ELECTRONIC GOVERNOR
LINEAR ACTUATOR
KEEP ACTUATOR
LINKAGE WELL
. LUBRICATED
~~~~
LINEAR ACTUATOR
TO ELECTRONIC
CONTROLLER
(DC +)114 RED
RED
~. l
TO TERMINAL
BOARO 11
'14 BLACK
BLACKIWHITE
Til SENSOR
SHIELDED
TO GOVERNOR
CABLE
WHITE
CONTROL
114 PURPLE
PURPLE
J
(TO LINEAR ACTUATOR
114 PURPLE
PURPLE
6
TERMINAL BOARD #3
Engines & Generators
69