H Throttle Shaft

Warning; That nice solid 3/8" steel shaft, that runs from your throttle lever down to the pivot behind the manifold??
Ain't solid steel, it's a thin-wall hollow tube.
Don't ask.

If you mean from the lever on the steering post to behind the carb all I have seen are solid rods. I think someone for whatever reason replaced yours. Your description does not match the hollow tube between the governor and the carb which contains the rod connecting the governor to the carb?

The one that came on my H was rusted almost through, you could see daylight through it in a couple of spots, so I am now using a replacement off a parts machine. If you need an intact one I have one for sale for $10 plus postage, just send me an email. In my experience the one from the throttle handle to the little cast piece that mounts to the side of the head is hollow and the one from there to the carb is a smaller solid rod.
Zach

Maybe I didn't describe it correctly. Andit's at the weld shop getting fixed so i can't measure it tonight. (I bent it, then thought "No Prob.", so I stuck it in the bench vise to straighten it, but it snapped right in half.)
But this 3/8" rod that runs from the throttle handle, on the steering post, down to the pivot mounted on the head behind the intake/exhaust manifold, looks to be a solid 3/8" steel rod. It's abut 4' long. There's smaller steel rods on each end; one small steel rod is bent and sticks into the hole in the throttle lever, and the other small steel rod has two adjusting springs. But anyway, this 3/8" rod appears to be solid steel, but beware, it ain't. Thin-wall hollow tube. And what I broke looks just like IHC part number 51358-D in my old 1939 onwer's manual. My H is a 1950, so I don't know, maybe this rod was original on a 1950 H. Maybe not.

You're right, there is another rod, IHC part number 48683-DA that runs from the pivot down to the curved governor lever. It's about 18" long, bent on each end, and I think that really is a solid 1/4" rod.
So I odn't know, your throttle rod may be solid steel, but it might not be.

Zach - Thanks, I never thought to replace the whole dang thing with a solid rod. I think i might do that. Thanks.

OK, I was wrong (maybe). I have an H, SH, M and SM. Looking at them they could be hollow, I always thought they were solid. I don't want to saw one in half to see. Actually, a hollow tube, such as a pipe resists bending more than a rod -- maybe that is why IH did it. It's also the most used rod on the tractor. I'm a little surprised that it broke, though.

(quoted from post at 08:52:23 10/03/11) OK, I was wrong (maybe). I have an H, SH, M and SM. Looking at them they could be hollow, I always thought they were solid. I don't want to saw one in half to see. Actually, a hollow tube, such as a pipe resists bending more than a rod -- maybe that is why IH did it. It's also the most used rod on the tractor. I'm a little surprised that it broke, though.

Click to expand...

That rod IS SOLID. I've got 2 Hs where a previous owner/mechanic sawed those rods in two instead of removing, presumably when a tractor split was done. Both rods were then welded back together with an arc welder. Couldn't have done that if the rods were hollow tubes.

If that rod IS a hollow tube, it is some shade tree mechanics concoction, and is NOT original.

Rusty, that should settle it. I have the one off my Super M and it does not feel like thin wall tubing as to weight. However when I noticed the smaller ends, I thought it was possible.

Sure hate to start another disagreement but after replacing the solid ends on some because of a bad threaded end or worn throttle handle end, they were all hollow between the ends. Can't claim the ones on all tractors are hollow.

(quoted from post at 00:06:25 10/03/11) Warning; That nice solid 3/8" steel shaft, that runs from your throttle lever down to the pivot behind the manifold??
Ain't solid steel, it's a thin-wall hollow tube.
Don't ask.

Click to expand...

I had actually put myself in a place while working on my H where I had to remove the throttle shaft to better align the linkage.

This is a '45 H and much to surprise ... this one is also hollow.

Based on my own experience and discoveries, I vote "hollow".
Mike

I'm for hollow as well. My H rod was worn through and it is most certainly hollow. That was a war model tractor, maybe they did it to save steel?

I thought I would put this question with this thread .. correct me if I am wrong here.

I have found the source of most my wobble in the throttle shaft linkage and wondered if anyone had a band-aid for this.

The center hole is oblong and wobbles more on the "throttle up" side. I can turn it around and settle for a sloppy throttle down or ...

Someone mentioned JB Weld but I hesitate making a shim that way.

Any idea's ?

Weld up the worn shaft and put a busing in the worn hole. Problem solved and no JB Weld.