3000 Throttle linkage gap

J. J. R. · Oct 15, 2016

We have a 1966 3000 gas that has a dead spot in the throttle travel where there is no increase in RPM. There is an area about half throttle where nothing happens as the throttle is advanced. Beyond the dead area, the RPM's will continue to climb again. The tractor runs great with no governor problems. We have checked the governor and all linkage for play or tight components and everything seems good and normal. We have a second 3000 that does it too, but the dead zone is not as great. I would say that there is almost 1/4 of the throttle movement where nothing happens. It just runs at about 1400 till the throttle travels beyond the dead area, then the RPM's start to gain again. Any help or advice would be greatly appreciated.

Thanks
Joe

Royse · Oct 15, 2016

Joe, I just purchased my first 3000 gasser, so I lay no claim to
being an expert on them. One of my first repairs was to pull
the cowling and fix a power steering leak through the steering
shaft. Of course to do that, I had to disassemble the throttle.

When I put it back together I had a similar issue.
In my case it turned out to be the little plate at the bottom of
the throttle rod. The rod would turn, but the plate did not.
It would slip back and forth a bit making the throttle not respond.

For me it was a matter of aligning it and tightening it up more.
Might not be your issue but it's free to check.

J. J. R. · Oct 16, 2016

Yep I did a similar thing with one my older fords too. In my case I didn't have the pinching bolt tight enough and the rod slipped in the plate like yours did. But in this case the throttle rod does pull. It looks like the governor doesn't move along with it through the center of the throttle travel. For some reason at the front of the engine the throttle arm pulls away from the governor and the RPM doesn't change till the throttle passed through the dead area and starts pulling on the governor again. Thank you for the reply.

Joe

JD Seller · Oct 16, 2016

Adjust the governor and throttle linkages. Yours sounds like they are out of adjustment. They will have dead spots at different RPM ranges because of the adjustment being off.

J. J. R. · Oct 17, 2016

Thank you for the great advice. I will have to find a manual or someone with the knowledge to make the correct adjustments and to which rods. We did re-adjust the governor rod to the new carburetor when it was installed, but it didn't change the dead spot. How we did it was by opening the throttle all the way and adjusting the governor rod so it fit the carburetor arm. That did solve the top end surging problem, but the dead spot in the throttle remains. Guess we need a little more professional advice.

Thanks again
Joe

3000 Throttle linkage gap

J. J. R.

Member

Royse

Well-known Member

J. J. R.

Member

JD Seller

Well-known Member

J. J. R.

Member

Similar threads