Throttle Linkage Stuck - SUCCESS

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Barnyard
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Throttle Linkage Stuck - SUCCESS

Postby Barnyard » Sun Apr 19, 2020 7:59 am

When the tractor is off the linkage moves as it normally should. I have timed the governor to the carb and it is very easy to move. But when it is running, the linkage goes into a bind. What am I missing?
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Re: Throttle Linkage Stuck

Postby RonT » Sun Apr 19, 2020 8:37 am

If it's binding in the idle direction, I would look at an internal problem in the Gov or the set screw. If the spring tension is too low (or lost) or there is something causing the weights to bind in the outer configuration it could cause this.
I don't have specific knowledge of the cub governor system but encounter this occasionally on Hit n MIss engines.

Ron

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Re: Throttle Linkage Stuck

Postby Barnyard » Sun Apr 19, 2020 8:49 am

Ron, it puts the carb in full throttle whenever I start it no matter where I actually have the throttle set.
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Re: Throttle Linkage Stuck

Postby tnestell » Sun Apr 19, 2020 9:02 am

Have it at the Barnyard Bash and I will take a look at it.

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Re: Throttle Linkage Stuck

Postby Bob McCarty » Sun Apr 19, 2020 9:16 am

I agree with Ron. Something internal, weights rubbing, thrust bearing shot, etc.
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we need to think differently."
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Re: Throttle Linkage Stuck

Postby Barnyard » Sun Apr 19, 2020 9:28 am

tnestell wrote:Have it at the Barnyard Bash and I will take a look at it.

It'll be here, Ted!
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Re: Throttle Linkage Stuck

Postby Dale Finch » Sun Apr 19, 2020 10:09 am

As a quick look, might pull the bumper spring and take a peek at the fork inside. I was working on mine a couple weeks ago, and was surprised I could actually see it with a mirror and flashlight. At least it's an easy thing to check and possibly eliminate as a problem.

Hey, can we have a "Zoom Bash" if we are still under travel restrictions at the end of May?! Of course, I guess that would require my learning how to do Zoom!! :lol:
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Re: Throttle Linkage Stuck

Postby Jim Becker » Sun Apr 19, 2020 11:52 am

You don't have the throttle plate connected to the choke rod and vice versa?

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Re: Throttle Linkage Stuck

Postby Eugene » Sun Apr 19, 2020 11:57 am

Barnyard wrote:Ron, it puts the carb in full throttle whenever I start it no matter where I actually have the throttle set.

Jim Becker wrote:You don't have the throttle plate connected to the choke rod and vice versa?
Agree with Jim. Throttle and choke connections at carburetor reversed.
I have an excuse. CRS.

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Re: Throttle Linkage Stuck

Postby Barnyard » Sun Apr 19, 2020 1:24 pm

Jim Becker wrote:You don't have the throttle plate connected to the choke rod and vice versa?

No, but you made me look.

While I was running it I found that it also wouldn’t run unless the choke was out. I’m gonna swap carbs until I have time to go through the one on it.
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Re: Throttle Linkage Stuck

Postby k hutchins » Sun Apr 19, 2020 3:11 pm

FWIW
When l first joined this group it was because l had a governor problem. It would idle at low throttle, but advance it jus 2 notches and it would take off, building rpm like a jet engine.
Long and short. What a mechanic friend and l discovered eventually, was that the pin that attaches the weights to the shaft had worked it's way out. So the shaft was spinning but the weights weren't doing their job.
If anyone needs more detail, l'll be happy to share.
Just throwing it out there.
Why is there never enough time to do the job right, but always enough time to do it over. :?:

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Re: Throttle Linkage Stuck

Postby inairam » Mon Apr 20, 2020 6:45 am

It is extremely rare to see that with the pin. It is almost never the governor insides. Linkage yes, but you should check and recheck a lot of other things before you say it is the governor and take it off. I think the governor is the most reliable system/part on the Cub. That is was a good mechanic.

Carb, air leaks, linkage binding, reversed linkages as mentioned, proper fuel flow to the carb, messed up keyway on the cross-link, plus some I can not think of right now, before the governor insides.
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Re: Throttle Linkage Stuck

Postby Gary Dotson » Mon Apr 20, 2020 6:58 am

Bill, while working on the governor, did you have the cross shaft off of the governor shaft? If so, you may have lost that little woodruff key. Years ago, I had one shear and it acted much like that.

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Re: Throttle Linkage Stuck

Postby coppersmythe » Mon Apr 20, 2020 7:26 am

tnestell wrote:Have it at the Barnyard Bash and I will take a look at it.
:lol: :lol: I'll help too . coppersmythe...................

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Barnyard
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Re: Throttle Linkage Stuck

Postby Barnyard » Mon Apr 20, 2020 7:37 am

Gary Dotson wrote:Bill, while working on the governor, did you have the cross shaft off of the governor shaft? If so, you may have lost that little woodruff key. Years ago, I had one shear and it acted much like that.

Gary, the only thing I did with the governor was time it to the carb. I nevr took anything off.
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.

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