What role, if any, does the governor shaft adjustment play in runaway. Basically wondering if adjusting one way or the other would allow more fuel w/o runaway.

 

 

Not even you know Wannadiesel???

 

there are no adjustments to the governor shaft. even if you could adjust it out, or closer to the front of the pump, it still won't change the distance the governor sleeve travels when pushed by the governor flyweights.

Edit: and... if you could adjust it somehow, the chances of the governor sleeve slipping off of the governor shaft would be greater and more than likely cause a runaway situation.

 

Thanks for the reply Jimbo. So what does that little screw under the locknut that I have circled adjust?

 

If you take the locknut off that shaft slides into the governor assembly. 1stgen545 (i think) has a VE pump tear down thread that is very detailed. If you look at it you'll see what I'm talking about.

 

it doesn't adjust anything. just a shaft to support the flyweight carrier. check it out...

 

On pumps with load dependent timing, it adjusts the load dependent timing (There are ports in the governor sleeve that reduce case pressure when the sleeve is further in).

 

I know it adjusts the shaft that the governor weights are on in or out. I've played with it when I had the pump apart. I set it back to where it was, but then I got to thinking...

 

Hmm, that would be useful if I knew what my case pressure was, so is that all it does??

 

i wouldn't play with it truthfully. if there was any power potential to be had, i'm sure it would've been discovered long ago. as far as the shaft adjusting the flyweight in or out... it doesn't make sense. centrifugal force is what forces them to spread apart. as shaft speed increases, the flyweights slowly spread and eventually far enough that the governor sleeve will move the metering sleeve on the plunger and expose the spill port, thus, you have defueling. it won't matter what position the shaft is adjusted to, the flyweights will still spread apart just as fast. and vice versa as shaft spead decreases.

 

Just to be clear, our pumps don't have the ports for load dependent timing.

I never bothered to see what range of adjustment there really was in that shaft, I just made sure that it was far enough away from the lever that controls the slip collar so as to never impede the amount of fueling the governor would allow.