Class1 Pump Throttle Electric Cotnrol Series 2 - Manual (Page 7)

7
PTEC II
Fuel Control Arm
Cable Support Bracket
Linkage Assembly
3" Stroke
1"Stroke
2" Stroke
Actuator Resolution
The further out on the control arm that the actuator cable is installed,
the better the actuator resolution.
In most cases the fuel control arm needs to be extended to make best
use of the 3" actuator stroke.
Ideally, a small amount of actuator movement should result in very minor
changes in RPM.
If the actuator installation has poor resolution, the result will be uncontrollable
engine oscillations as the governor attempts to find the setpoint and overshoots
that setpoint each time. There are adjustments that can be made to the ECU that
will adjust for minor inadequacies, but CAN NOT compensate for a bad
installation
THROTTLE ACTUATOR CABLE
MAINTAIN A SMOOTH RADIUS TRANSITION
IN THE ACTUATOIR CABLE. CABLE MUST
NOT EXCEED A 90 DEGREE CORRECTION
CHANGE.
LINKAGE ASSEMBLY
FUEL CONTROL ARM
CABLE SUPPORT BRACKET
3" STROKE
THROTTLE ACTUATOR BODY SHOULD BE LOCATED
ABOVE THE LINKAGE ASSEMBLY POINT TO PREVENT
WATER DAMAGE IN THE EVENT THE CABLE SHEATH
IS DAMAGED OR SCORED.
THROTTLE ACTUATOR
Adjust this pin to limit retraction of the actuator rod.
MOTOR
Linear Actuator
Linear Throttle Actuator Setup
NOTE: the engine should not be running during setup.
There is a limit switch at the end of the actuator travel, this should be set so that the actuator can not travel further
than the engine throttle linkage full throttle position.
It is important that the ram be adjusted and that the tangs on the limit switches are not bent.
The actuator cable should be attached to the throttle linkage and there should be no interference with normal
throttle movement. The cable should not bind or bend at either extreme of travel.