Governor System
55
62 690 05 Rev. E
KohlerEngines.com
Proper link/spring assembly is critical. Insert spring
hook tab of spring through DLA clevis hole until it exits
opposite side, and tab of spring is allowed to snap into
position. Hook opposite “hook” end of spring through
throttle body lever adapter hole before inserting z-bend
of link into throttle body lever adapter. Pay close
attention not to stretch/over extend spring or damage to
spring may occur.
If clevis shaft becomes overextended or disconnected
from actuator reinstall as follows:
1. Disconnect linkage and remove DLA from bracket.
2. Remove clevis shaft completely out of DLA.
3. Reinstall rubber boot onto DLA if required.
4. Place clevis shaft into actuator. Rotate clevis shaft
clockwise 3 full turns, applying slight pressure, until
you feel clevis shaft keyway make contact with key
in actuator. When clevis shaft is installed properly
fl at of clevis will be aligned with two mounting holes.
NOTE: Continuing to rotate clevis shaft after it has
made contact with keyway will damage keyway
or actuator.
5. Confi rm that key and keyway are in alignment, by
hand, press clevis shaft into actuator. It will take a
reasonable amount of pressure to do this. If shaft will
not move inward, do not force it. Remove clevis
shaft and repeat previous step.
6. Reinstall DLA into bracket, torque screws to 7.3 N·m
(65 in. lb.), and connect linkage.
7. Loosen DLA bracket screws slightly, to allow
adjustment. Slide DLA bracket assembly back (away
from engine) until throttle plate is fully open. Hand
tighten screws to maintain this position.
B
A
A
A
Equal Distance
B
Full Throttle Position
8. Measure distance from face of DLA bracket and top
of E-Gov bracket edge as shown above. Adjust DLA
bracket until measurement is same distance (within
0.5 mm/0.020 in.), while adjusting to full open throttle
plate as described in step 7. Once this position is
established, hold in this position and torque DLA
bracket screws to 10.2 N·m (90 in. lb.).
Operation of Electronic Governor System
1. Key is turned ON, providing power to GCU (red lead
from engine harness to GCU harness).
2. Engine is cranked, GCU receives speed input/tach
signal from ECU (grey lead from engine harness to
white lead in GCU harness).
3. GCU commands DLA to close (home) then open a
preprogramed amount, typically 10-15%.
4. GCU identifi es engine is running by speed input/tach
signal.
5. GCU identifi es speed input voltage (red w/yellow
tracer from OEM harness to GCU harness) and
commands DLA to control throttle as required to
maintain selected speed.
