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Farmall & IHC Tractors Discussion Forum
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986 problems

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aaron

09-06-2003 20:55:26




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I have two problems with my 986. First the Ta is bad. And second, the other day while cutting hay the pto just stopped and won't start again. Does any one have any idea what could be bad? and can either of these problems be fixed without splitting the tractor? thanks
aaron




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Aces

09-07-2003 17:13:23




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 Re: 986 problems in reply to aaron, 09-06-2003 20:55:26  
Aaron Travis said it just about right on the PTO. If your steering and brakes work ok I would say the pump should be ok the TA is hydraulic on the 986. if it stops in direct as well as TA it could be main clutch, the 86"s had the hanging clutch peddles so don't know free peddle adjustment.



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Aces

09-07-2003 08:29:30




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 Re: 986 problems in reply to aaron, 09-06-2003 20:55:26  
Aaron as for the PTO I would say if it quit all at once it would be the little pin in the control valve broke. As for the TA you never said what it is doing or not doing if it will not pull a load or hold a load most likly will have to split. You should be sure it is adjusted ok first.



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aaron

09-07-2003 09:45:19




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 Re: Re: 986 problems in reply to Aces, 09-07-2003 08:29:30  
The ta will work just driving, but if you pull a load, the tractor will just slow down and stop.
Where is this pin and control valve. Believe it or not i'm actually a mechanic, but i work at a deere dealership, so this red stuff is new to me.

aaron



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Travis

09-07-2003 11:21:41




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 Re: Re: Re: 986 problems in reply to aaron, 09-07-2003 09:45:19  
Aaron,
If you look at your PTO unit on the back of the tractor, the control valve is on the upper left hand side of this and should have the PTO linkage connected to it and is what is pulled up on when you activate the PTO. Disconnect the linkage and unscrew the control valve, if it will come out of the the PTO unit completely then your pin is broken, then you will have to pull the plug on the bottom of the PTO and drop the other half out. Can't remember what it looks like on an '86 series, but just did one on a 1066 a couple months ago. I just put the nose of the tractor down in the ditch(to get the Hy-Tran low enough out back) and took the whole unit out to do it, because without disassembling the three-point it was impossible. If this isn't your problem, then you may want to check your PTO pressure, which is the plug a couple inches below the top of the control valve, closest to the rear end housing. I think it's supposed to be around 235 psi. Alot of other things to check also, but you probably ought to at least get a manual of some kind. Hope this helps.

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