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Farmall & IHC Tractors Discussion Forum
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656 shift lever problem

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Greg Betzel

06-26-2004 11:18:50




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Could someone kindly explain how the shift lever mechanism on a 656 is supposed to work?

In the middle of doing some loader work, ours decided that it only wants to go into reverse and first; the shift lever won't move sideways to get onto the other gears. We took the battery cover off, and see where the three arms/rods are & where the two square keys go (one was out). But we just can't make out how things are supposed to work; with a key in either of the holes the shift lever won't move sideways. And I don't see how the center arm works without a key. :) Any help would be appreciated, IH was a little more clever here than we are.

Greg Betzel

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Hugh MacKay

06-26-2004 15:39:32




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 Re: 656 shift lever problem in reply to Greg Betzel, 06-26-2004 11:18:50  
Greg: There is only one pin or key which ever you want to call it going through the shaft. Those holes you see are just for removing the pin. The pin has become worn in the shaft and is loose. That pin does not have a head but rather protrudes about 3/16 of and inch on each side of shaft. You center that pin back in the shaft and you will be able to shift again.

That will be just a short term fix as you need a new shaft and the pin that goes through it. If you line pin up at one of the holes, just tap it out with a punch and the shaft will pull right out from gear shift lever end. About a 15 min fix when you have the parts.

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kev@ia

06-26-2004 11:59:17




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 Re: 656 shift lever problem in reply to Greg Betzel, 06-26-2004 11:18:50  
IH didn't use a square key, there is a dowel pin that passes through the shifter shaft.



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Greg Betzel

06-26-2004 22:08:06




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 Re: Re: 656 shift lever problem in reply to kev@ia, 06-26-2004 11:59:17  
Thanks for the replies, things make perfect sense now.

As for the pin or key, this one definitely has (had) a square one in it for some reason. Anyway it'll be coming apart for repair.

Thanks again,
Greg Betzel



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RPM

06-28-2004 08:54:43




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 Re: Re: Re: 656 shift lever problem in reply to Greg Betzel, 06-26-2004 22:08:06  
Original design was a round dowel pin, later design and replacement parts was a square pin, had more contact area inside each lever.



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