Adjustable Front Axle

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Jim Becker
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Adjustable Front Axle

Postby Jim Becker » Wed Dec 14, 2016 11:12 pm

I have a Farmall Cub adjustable front axle I am trying to get apart. Both sides are currently stuck in the narrowest position. Anyone got one apart or know how long the tube of each extension is? I know there are 4 more holes (8 inches) beyond where the pin was, but don't know how much longer the tube is. I want to put some heat on it but no point heating beyond the end of the extenson tube.

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Re: Adjustable Front Axle

Postby Glen » Wed Dec 14, 2016 11:45 pm

Hi,
Here are pics from TM Tractor, maybe they will help some.
Maybe you looked at them before. :)

http://www.tmtractor.com/tm-tractor/gst ... xt_001.htm

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Re: Adjustable Front Axle

Postby tst » Wed Dec 14, 2016 11:55 pm

Jim,I have gotten many of these apart that are stuck,the water gets in the bottom of the tubes where they slide together and rust in place, get the spindle tube to turn front to back in side the axle tube then you can work at pulling it out
good luckTim

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Re: Adjustable Front Axle

Postby Chipmaker » Thu Dec 15, 2016 7:29 am

I don't have a way to measure it Jim but here's the photo of it laying on the bench if you can get an idea from it. Mine was stuck real good, I wound up heating it and beating on the piece the rod goes through to get it out, if I do another one I will put a block of wood between pipe and hammer and not have to fix the dents :D
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Re: Adjustable Front Axle

Postby ScottyD'sdad » Thu Dec 15, 2016 8:23 am

Jim, just measured one. 16 1/4,inches, end to end. Good luck with it, I've had a couple that refused to come out, ecen with tons of Kroil and heat.

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Re: Adjustable Front Axle

Postby John *.?-!.* cub owner » Thu Dec 15, 2016 12:02 pm

I have one apart I can measure the next time I am at the shed, but I do remember that the end only clears the pivot tube by about 1/2 to 3/4 inch. I am lucky, I have a friend that is the 3rd generation owner of a local body shop, and was talking to him about getting one apart and how much fun it was, and he told me they didn't have much work at the time and to bring it in, he always like to try something new. He got it apart and only charged me for the gas he used (about $25 if I remember correctly from 10 years ago), but he also said not to bring in anymore of them. :|
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Re: Adjustable Front Axle

Postby inairam » Thu Dec 15, 2016 3:09 pm

once apart remember to grease it. A PO greased it and when I went to take it apart it was easy
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Re: Adjustable Front Axle

Postby Jim Becker » Sat Dec 17, 2016 12:35 am

Can't call it success yet, but making progress.

I originally stood it on end inside a 12-ton press, hoping there was room for the extensions to move in a little. I left it that way for a couple weeks while it soaked, pressed, and added some heat. All I did was bend the press.

Yesterday I chained one extension to a cross brace of an A-frame, blocked one end of the other extension down and pulled the other end with a chain hoist. Pulling and heating, I got one end to turn. Today, I pinned that extension back in place and used heat to get the other end turned. No progress on pulling them out yet.

Any motion is better than none.

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Re: Adjustable Front Axle

Postby ScottyD'sdad » Sat Dec 17, 2016 8:15 am

Sounds like some of mine, Jim!
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Re: Adjustable Front Axle

Postby Ben B » Sat Dec 17, 2016 8:37 am

I guess I was lucky on mine. My front axle came apart easy. A little bit of tapping with a 2 pound hammer and that was it. But, next time I adjust the front end I'm going to pull them completely out and throw the grease to them to prevent this kind of thing from happening.

I hope you can get them to cooperate and come on out.
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Re: Adjustable Front Axle

Postby Stevetractor » Sat Dec 17, 2016 8:53 am

Patience Jim. Slow and steady. I don't like hitting them because you could beat it in two and tubes would still be stuck. Just did one and ended up taking it to a machine shop they had to split outer tube on both sides and then weld back together. Obviously it had spent a lot of nights under the stars I bet

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Re: Adjustable Front Axle

Postby tst » Sat Dec 17, 2016 9:56 am

I leave them on the tractor to remove the tubs, this way the tractor holds it instead of flopping around,

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Re: Adjustable Front Axle

Postby bigbadger12000 » Sun Dec 18, 2016 12:19 pm

I had the same problem on my A. I removed the through pin and replaced it with a smaller diameter pin and just snugged the clamping bolts and mowed the lawn a couple of times while hitting it hard with penetrating oil. Kept a close watch and tighten the clamp on the driver side loosened up. The engine side did not loosen so chained the wheel (which works better on an A) to my shade tree and just gently rocked if forward and reverse. took a while, but it broke loose.

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Re: Adjustable Front Axle

Postby Jim Becker » Tue Dec 20, 2016 11:44 am

After 3 more days of heat, beat, pull, and pry, I got it apart. I finally strung it lengthwise in my A-frame with a chain hoist attempting to pull it apart. I used a second hoist vertically on the A-frame to twist the extensions back and forth until it came apart. Strangely enough, one end came 4 inches then stuck and the second end started to move. After getting the second end clear out, I put it back in the press and pushed it back the 4 inches it had moved. After that, it came apart with a hammer.

I measured one of my extensions at 16 inches, the quarter inch difference from Ed's measurement is well within variation that could have crept in over the years. 13 inches of the extension was inside the 29-inch center section. That would only leave about 5/8 inch clearance to the center pivot tube.

These extensions are destined to replace the ones currently on a tractor, meaning I have one more axle to get apart. If those extensions decide to fight, I can swap in the whole axle. Either way, the next step is to try to get a pair of tie rods in shape before disabling the tractor.

Damage report on the equipment includes a broken 2x4, a broken 2x6, a slightly more bent 12-ton press, 2 slightly bent legs on a 6-ton A-frame, and one chain that is now in 3 pieces. I still haven't found one of the broken chain links. A larger torch would have helped.

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Re: Adjustable Front Axle

Postby tst » Tue Dec 20, 2016 12:27 pm

glad you got it, I think rust some times is stronger than some welds!


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