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Case Tractors Discussion Forum
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Case 870 agri king powershift tranny not working p

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Roger Nyquist

01-22-2007 15:00:27




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Hey there, I have a Case 870 that will not shift properly and was wondering if any one has any tips on where to start. What happens is when you select a range and put the tractor into a gear it may move or it may not, it also barely ever reverses. When a gear does engage it feels strong but it takes a long time usually to find one that works. I am going to start by checking and changing all the filters, but I was wondering if anyone knows what else to look for or check. I have started checking pressure on the check holes on top of the tranny and so far the most I get is about 60psi. I would appreciate any tips.... thanks

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drbunson

01-24-2007 12:58:12




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 Re: Case 870 agri king powershift tranny not worki in reply to Roger Nyquist, 01-22-2007 15:00:27  
When you put the tractor in gear and it doesnt move did you try to power shift up to 2 or 3? We had a 970 AK that had a similar prob, PS1 was way weak if at all, shift up to PS2 and it took off no probs. We found that it had a cracked clutch plate. If I remember correctly it always has 2 clutches engaged at all times. It's not a repair for the faint hearted, takes time and patients. If you dont already have one a good DETAILED shop man is a must!! The one we use is about 2" thick with a complete hydro section with flows and pressures in all gears, was VERY glad to have it. HOpe that helps some.

Bob

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Old Rusty

01-23-2007 16:46:56




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 Re: Case 870 agri king powershift tranny not worki in reply to Roger Nyquist, 01-22-2007 15:00:27  
You need 170 psi. If pressure is as low a 60 y0ouneed to start by checking the flowdivider. It could be either the flosediveder spool sticking- broke spring - or the cold oil releif valve. Fow divider is lockated on the right side of the trans.



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jheitkemper

01-23-2007 11:05:19




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 Re: Case 870 agri king powershift tranny not worki in reply to Roger Nyquist, 01-22-2007 15:00:27  
Sounds bad to Me ,,My brother sent his 970 to s central Illinois,shop,Spent over 5 k,But it is right now ,,tractor has about 5500 hours now , And was doing O.k . He got it around 2500 hours and 20 years back, Doubtful if the tractor was given the best service until it came on to His Farm ,,You may have to do the same , if you are not fond of confusing mechanical problems , I can get the contact info of shop ,There is a lot of help on this Forum , if the right Guys are monitoring ,they can help You troubleshoot and make lasting repairs ,,.Good luck Jim

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