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John in UK/TO-20 Bushing Help

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Mike in NC

01-22-2006 12:17:22




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John---Still no luck in removing the yoke bushing. I've tried gentle heat, trying to not damage the cast, and continued to hammer. I went in and talked to the head mechanic at my Massey dealer. He says they have to be cut out with a torch and when I mentioned the possibility of damaging the cast, he just pointed at a new tractor. Not very understanding. What do you think of this idea? I cut the old rocker off with a cutting blade. Once the old rocker is removed, I cut off the portions of the old bushing on both sides of the cast to allow the new rocker to fit in its place(leaving the portion of the old bushing in the cast). I then obtain two additional bushings the diameter of the old bushing to fit between the cast and the ears on both sides. These bushings would hold the new rocker in place and allow the hinged pin to pass through the outer ears, the new bushings, the modified old bushing, and be pinned on the outside as normal. If you agree with this idea, what type metal should I try to find for the additional bushings? I just want a second opinion before I do surgery. Thanks

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Doug NC

01-30-2006 05:12:16




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 Re: John in UK/TO-20 Bushing Help in reply to Mike in NC, 01-22-2006 12:17:22  
I had the same problem with my 30. I took the front end off, turned it so it was resting on the front bumper. I sprayed it down every night for about a week with pb blaster, then took a 1" piece of steel tubing about a foot long and a 8 lb sledge hammer. Lot of work but it came out. Once out I used some 220 sand paper to smooth out the pin. Before reassembly I coated it with antiseize.



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SandyB@TN

01-24-2006 14:12:07




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 Re: John in UK/TO-20 Bushing Help in reply to Mike in NC, 01-22-2006 12:17:22  
Sorry, Mike,
I didn't notice your post before. I had the same problem with my TO-20. I warmed the two bosses on the rear end with Oxy-Acetylene torch. No cutting, just heating. I let it cool. Then I took a 5"x 1/2" or 5/8" bolt, I forget which, put a nut on it and centered this up in the bushing and used as a drift. I also had to take the left fender off to get a swing with a 24 oz. ball pien hammer. It came right out then. Be sure to let it cool before you do any hammering. All that steel and cast iron gets soft when you heat it cherry red. The problem is rust. It's almost as good as a weld. Hope this helps.

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John (UK)

01-23-2006 12:27:00




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 Re: John in UK/TO-20 Bushing Help in reply to Mike in NC, 01-22-2006 12:17:22  
If you do cut off the old rocker and leave the bush sticking out either side of the centre piece on the axle housing, couldn't you be brutal with a hammer and chisel and knock the side of the bush sticking out straight towards the axle housing thereby squashing the bush then do the other side and surely it would come out then. Alternative is to get someone skilled with a blowtorch to cut it out.

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gerard

01-22-2006 14:51:18




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 Re: John in UK/TO-20 Bushing Help in reply to Mike in NC, 01-22-2006 12:17:22  
Acetylene torch is not such a silly idea - I'd thought of mentioning it earlier. Reason, is cast iron doesn't cut as easily with oxy as does steel. Carefully done, there should be minimal damage to the cast iron. Alternatively, you could make up some bushes to extract it with a through bolt (without interfereing with side lugs).



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