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Bent Radius Rod

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paul (FLA)

09-15-2003 05:32:38

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I noticed one of my radius rods was bent up in the middle, touching the link.
I removed the ball end of the radius, but cant get the front off the axle. I removed the nut from bolt, but can't push the bolt up through the axle.
I can't even turn the bolt. It must be binding, or rusted in place. I don't want to bang on the thread end, and I guess the bolt could be bent. Any Ideas? should I heat it up, and use a block of wood to protect the threads, and bang on it? Should I cut off the top, and try to drive it through?

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Rusty Jones

09-15-2003 11:44:05

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Re: Bent Radius Rod in reply to paul (FLA), 09-15-2003 05:32:38

When i worked for the Ford Dealer in 49, 50, & 51, I was the mechanic helper. We had Ford-Fergusons in the shop, as well as Ford cars and trucks. We'd get stuck radius rods and really stuck king-pins! To get out the king pins, we'd heat the axle really hot, then beat on the pins until they came out. This ruined the pins, but we were replacing them anyway. Ford furnished a tool to get them out, but we still had to heat the axle to get them out! For the radius rods, we'd heat all around the area, with the bolts setting on an anvil, with the weight of the tractor on them, then when they got really hot, we'd beat on the axle until they came loose. Of course, this ruined the bolts, too, but they were bad anyway and had to be replaced. The heat didn't seem to bother the axle any--we never had any come-backs from heating them up! RJ

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Jim Polanosky

09-15-2003 10:03:31

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Re: Bent Radius Rod in reply to paul (FLA), 09-15-2003 05:32:38

Paul;

I just when thru the front end on my TO-30, since all parts were "well-worn". I pulled the axles / spindles apart & off the tractor, then took them (with radius rods attached) into my shop. It took a substantial amount of applied heat before the original bolts would turn, then I drove them out using a hammer & drift pin. I got new bolts from a local vendor & put a coat of 'never-seize' on them before reinstalling (just in case I ever have to get them out again!). Hope this helps!!

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Jim W

09-15-2003 06:37:19

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Re: Bent Radius Rod in reply to paul (FLA), 09-15-2003 05:32:38

I have taken apart about 8 of these lately and most have been difficult. All struggles have been due to rust as opposed to bent bolts, even with bent radius rods.
I've had the most success by applying penetrating oil repeatedly over a few days (if you can afford the time) and then turning the bolt with a very long breaker bar. Once it begins to turn you're on the way.
I would not worry about damaging the bolt; most times they are quite worn and need to be replaced anyway. You can get new bolts in that size; the only difference with "modern" bolts is that the heads and nuts are smaller (15/16" instead of 1 1/16" I think), so you may like to put a washer under them.
Note that the radius rod being bent means the axle is tilted, which means the axle pivot pin needs attention.
Jim

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Paul (FLA)

09-15-2003 09:01:42

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Re: Re: Bent Radius Rod in reply to Jim W, 09-15-2003 06:37:19

Jim, Thanks for the info.
I do have time, so I will coax it out.
Is heat a nono fo this part.
You mention the pivot pin. Should I just tak a look at it, or remove the steering assembly from the tractor and replace it.

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Jim W

09-15-2003 12:03:02

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Re: Re: Re: Bent Radius Rod in reply to Paul (FLA), 09-15-2003 09:01:42

If you take the axle apart i.e. remove the sections with the wheels, you will likely be able to flop the mid-section of the axle back and forth. If so there is a good chance the pivot pin is worn.
You can get new ones but in one case I filled in the worn area with a mig welder, and then had it turned on a lathe back down to 1.75". There is also a bushing that is pressed in to the axle; if the pivot pin is worn the bushing will be shot for sure.
I seem to recall that the bushing, once pressed in, was a bit bigger than spec, so you may want to check that if you are going the weld-and-turn route.
Also I should mention that I had a bent radius rod straightened fairly successfully by a guy with a press. If you put a board along the high spot and press gently you can do not too bad a job.
Jim

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Paul (FLA)

09-15-2003 13:39:58

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Re: Re: Re: Re: Bent Radius Rod in reply to Jim W, 09-15-2003 12:03:02

Thanks for all the input.
Will post later with an update on the pain threshold achieved.

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