Posted by Clint Dixon on Wednesday, October 27, 2004 at 7:24AM :
In Reply to: This Governor is on the end of the Throttle shaft posted by Will (in MI) on Tuesday, October 26, 2004 at 10:41PM :
If you have an ET1, ET2, ET4, E7F1, or E7S1 carbureter, you cannot remove the governor and replace it with a spacer or shorter studs. These correct carbureters have an integral governor that contains the throttle plate.
If you remove the governor, from one of these carbureters, you remove the throttle plate along with it. The accelerator pedal, or hand throttle, do not actually open the throttle plate, nor do they cause it to close. The internal governor main spring is what causes the throttle plate to open. The accelerator pedal simply moves a hard stop out of the way so the throttle plate can open if the governor mainspring is working properly. The external return spring on the linkage from the accelerator pedal to the carbureter is what causes the throttle plate to close.
The operation of this integral velocity type governor is basically over ruled by the position of the accelerator pedal and/or hand throttle in combination with the tension of the external throttle linkage return spring. But once the accelerator pedal or hand throttle is manually operated, or the spring stretches or breaks, the governor itself has the ultimate influence on whether the throttle plate is open or closed. The addition or lack of a variable speed belt driven mechanical governor only acts as a means as an automatic replacement for the operation of the accelerator pedal. It has no other influence over the integral carbureter governor, as far as to whether it works correctly or not. (However, the design of the integral carbureter governor is required for correct variable speed mechanical governor operation).
The later sandwich type POWER-WAGON governors found under E7T1, E7T2, etc. carbureters can be removed as these carbureters have their own throttle plate.
It sounds your truck is experiencing the classic results of a broken governor main spring. This would require the cover plate to be removed in order to fix or temporarily rig a fix. If you don't want to permanently fix the governor to operate as designed, a new one-piece throttle shaft could be machined that would give complete control of the throttle plate to the accelerator pedal and hand throttle. I don't think you would have any luck with trying to wire any linkages together. You would have to make a "hard connection" within the governor.
Contact me if you need more help.
Clint
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