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Re: Non draft control top link pin

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Author  [Modern View]

01-05-2013 12:20:10

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If you want to attach anything to the tractor but not to the Draft Control, you use a long hinged pin that is below the Top Link attachment. If the implement is made to attach at this point it will be OK but if you are using something that isn't made to attach at this point be careful or you can break the casting when you lift because there isn't enough clearance around the top end of the implement connection. I have attached a picture with the linkage drawbar stays attached to this pin..John(UK)

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Tom in MO

01-09-2013 09:51:33

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 Re: Non draft control top link pin in reply to John(UK), 01-05-2013 12:20:10  
John(UK): on my TO-20, someone must have done just what you described in your post, as one side of the "non-draft control" attachment point is broken off, making it unusable.

1. Can it be repaired? If so, how much disassembly of the internal hydraulic stuff is necessary to make it safe to weld a new piece on to that casting?

2. In the meantime, can I just use the "draft control" top link attachment point, even for implements that don"t need draft control?

3. I just happened across a set of drawbar stays, like those pictured in your post - can they be attached to the "draft control" attachment point, instead of how they"re attached in your photo?

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01-09-2013 11:19:40

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 Re: Non draft control top link pin in reply to Tom in MO, 01-09-2013 09:51:33  

I have seen them broken off before and it has always been due to some clown towing from just one lug on the casting. They don't break easily but when they snatch at it and possibly not pulling in-line as well, anything can happen. I have also had one break when trying to remove the bush out of the center of the Top Link Rocker, they didn't warm it up and it was seized solid, so you can guess what would happen. You simply use the Top Link connection for most implements, if was meant to be attached on the hinged pin it would be a totally different fitting. Always attach your implements to the Top Link connection unless it has a different fitting than a normal top link. If you have any doubts about a particular implement, just email me with a picture of it if you can and I will be able to tell you. But to clarify, it doesn't matter if you are using the Draft Control or not, you nearly always attach the Top Link to the Draft Control Spring. It is made to operate like this. I say NEARLY ALWAYS because there are a few exceptions to this rule, but these implements are now few and far between. Draw-bar stays on a TO20/30 and TE models always attach to the Top Link connection, the picture I sent last time was for a TO35 and they attach to the long pin as in the picture, you could use these on your tractor if the Pin was not broken.

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Tom in MO

01-09-2013 12:42:21

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 Re: Non draft control top link pin in reply to John(UK), 01-09-2013 11:19:40  
Thanks, John.

Given that I can use attach (virtually) all implements to the Draft Control Spring, would it even be worth the trouble to try to repair the casting at the other (lower) attachment point? (Unless I completely run out of things to fix, that is!)

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01-10-2013 01:37:00

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 Re: Non draft control top link pin in reply to Tom in MO, 01-09-2013 12:42:21  
No not worth it. If we had been having this conversation 50 years ago when the tractors were still in work full time it may have been different but these days very few attachments would use that connection point as I said yesterday. Unless you are a perfectionist and want to show the tractor, forget it. Most implements are made to use the Top Link Connection and not the long hinged pin. The top link attachment point is only working when the implement is in the ground, NOT when the implement is above the ground as there is no pressure from the implement to operate the draft control. This is how it is meant to operate so don't think about it anymore..John(UK)

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Tom in MO

01-10-2013 04:58:14

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 Re: Non draft control top link pin in reply to John(UK), 01-10-2013 01:37:00  
Actually, John, I took a closer look, and the attachment point is fine.

What I was seeing was the original long, hinged pin (it looks original, anyway), that was broken off on one end. (It looks like it seized in the hole/bushing.)

I"ll just (carefully) extract that broken/seized pin, and I should be good to go.

Thanks again.

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01-10-2013 07:43:57

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 Re: Non draft control top link pin in reply to Tom in MO, 01-10-2013 04:58:14  

Wonderful, glad that it is OK. The hinged pin on a TO20/30 or a TE tractor should have a shoulder on the Pin at the opposite end to the Linch in hole. This is to allow a bigger hole on the casting so that you an pull out the Bush through the bottom of the Top Link Rocker, the Hinged Pin on a TO35 or 65 does not have this shoulder, so be aware if you buy a new pin..John(UK)

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