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8N Tranny still frozen...what now? Help.

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Dennis (WI)

04-29-2000 18:02:02




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I've read the archives and the recent postings regarding Big Steves frozen tranny. Today I spent the whole afternoon trying every suggestion I have found on the board. I jacked it up, drained the fluid, and even towed it backwards but the gears are as stuck as ever. The only fork that moves the the top one - reverse. All the other forks are frozen. Help?




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Dennis(WI)

04-30-2000 05:34:20




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 Re: 8N Tranny still frozen...what now? Help. in reply to Dennis (WI), 04-29-2000 18:02:02  
FIRST: Thank you all for responding so fast - This board is the most practical and useful things I've ever experienced on the net. So Thanks Big Steve & alan in GA and Gaspump. I am REAL frustrated so far I've overhauled the Hydraulic Pump, Rebiult the carberator, replaced the starter, and the water pump on my 8N in just one year. In fact, I just got the new water pump back in when the Trany Froze. HMMM So I really appreciate all the help and support from this board. On to the problem at hand...When the tractor first froze I took off the cover plate and was immediately able to move the first and third shift rail I put the cover back on and started her up. It stalled and that's when it really froze tighter then a ....it froze! I jacked up one wheel and was able to move it back and forth about one-fifth of a turn - I tried spinning and prying at the same time...nope. I put the tractor back down and tried towing it in reverse to possibly take the some pressure off...and pryed some more...nope. The Third and first shift rail is stuck and the fork is tight against the first gear disc and it is wedged like a weld. In the IT shop Manual FO107 the picture showes the fork nestled in the middle of third and first gear, but mine is tight against the first gear. There is some play in the second and fourth shift rail but I still couldn't get it to pop free. I have drained all the fluid and see no evidence of metal filings or chipped or worn gears. I have yet to try jacking up both tires at the same time....
I hope this helps you to plan the next attack on the stuck tranny virus.

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alan in Ga

04-30-2000 07:45:52




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 Re: Re: 8N Tranny still frozen...what now? Help. in reply to Dennis(WI), 04-30-2000 05:34:20  
Dennis Have you tried removing the bolt that locks the fork to the rail--this would let the fork slide free. I doubt if this is the problem but it would eliminate a bent or frozen rail.

If this does not help you are going to have get something between the slide and first gear and force it to the center. It is best use brass tools on transmissions as the gears, slides, shafts,...etc are heat treated and will chip easy.

Be sure to wear safety glasses if you do any lite hammering.

good luck
alan

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alan in Ga

04-29-2000 20:44:37




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 Re: 8N Tranny still frozen...what now? Help. in reply to Dennis (WI), 04-29-2000 18:02:02  
Dennis

Jack both rear tires clear of ground then using a small pry bar try to move each slide one at the time putting each in neutral before attempting the next. You may have to rock the gears to get them to engage. Anyway it should not take a lot of force to move the slides. You may want to clear only one tire and have someone rock it while trying to free her up.
good luck,
alan



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Big Steve

04-29-2000 19:42:30




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 Re: 8N Tranny still frozen...what now? Help. in reply to Dennis (WI), 04-29-2000 18:02:02  
From what I've learned and done so far, I think I'd recommend an effort to loosen any stuck fork. It's pretty satisfying when the fork pops loose -- I've been careful but firm when hammering on pry bars etc. with my 2 lb. sledge.

As you've seen I don't know if mine is fixed yet or not -- I suspect something else is still a problem, but have you tried to release the forks?



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Gaspump

04-29-2000 18:11:27




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 Re: 8N Tranny still frozen...what now? Help. in reply to Dennis (WI), 04-29-2000 18:02:02  
A little difficult to figure out tranny problems over the net. Have you tried to move the sliding gears by using a small pry bar? Usually they will move easily. No chips or loose shavings? Keep playing with the gears and if you don't have serious damage you should be able to move and turn most gears freely.



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