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Allis Chalmers Discussion Forum
:

Another AC 180 slipping out of gear

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Dale in Michiga

02-13-2007 06:11:12




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I've read the AC forum for the past several months and noticed I'm not the only one with a 180 that pops out of gear. I've read of some solutions like tying the stick shift or blocking it with a chunk of wood. My 180 pops out of 5th and 6th (sort of handy gears to have working). My question is: Does it do the transmission any more harm to lock the stick shift in position and what about when it does pop out of gear under load, is that doing any more damage? Does fixing this problem mean splitting the tractor? And would an AGCO dealer be able to get the parts that might be needed?

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TexasAllis

02-14-2007 05:09:53




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 Re: Another AC 180 slipping out of gear in reply to Dale in Michigan, 02-13-2007 06:11:12  
When I was a kid my dad and I went through 3 D-17s used for hard tillage. Never had a problem with the transmission. Two of the tractors had the engines overhauled twice while we had them. I still have the fourth D-17 my dad bought 20 years ago. Still no problems with the transmission.



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Elton Fancher

02-14-2007 04:14:42




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 Re: Another AC 180 slipping out of gear in reply to Dale in Michigan, 02-13-2007 06:11:12  
I split a 180 and installed new third gears once. It continued to jump out of third and fourth. The shifter is what actually holds them in gear. If your shifter is rebuilt correctly it will do more good than splitting the tractor. I do not believe that operator error is the problem. I had a 180 and 190 that both jumped out of gears, I have a 200 that does not.



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Brad Wright of MO

02-13-2007 18:08:50




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 Re: Another AC 180 slipping out of gear in reply to Dale in Michigan, 02-13-2007 06:11:12  
Yeah i suppose Allis Chalmers was kinda guilty for putting thin gears in there tractors, but you cant name me one tractor company that doesent have 1 problem with it. It is hard to have a perfect tractor. But it is also the operators fault for grinding the gears. You have to push the clutch in fully and maby even slow down the throttle a little bit. These transmissions were not powershift transmissions they were scyrno shift transmissions and should be treated as such. Now to fix the problem yes the tractor will have to be split. It is kind of expensive and its best if you just take it to a dealer unless you have the equipment to do it plus the knowledge and time. But anyway feel free to email me with anymore questions you have and good luck.

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m.tremblay

02-13-2007 09:35:30




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 Re: Another AC 180 slipping out of gear in reply to Dale in Michigan, 02-13-2007 06:11:12  
the AC transmission never broke in the field. they go out of gear to neutral because the DRIVER don't shift it correctly. Each products ( trac-tors, cars etc) have their features and you have to live with them. the proof: tractor pullers with 180 or 190 put a lot more horsepower to wheel via this transmission and their never broke. They shift correctly.



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Rich Va

02-13-2007 10:08:05




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 Re: Another AC 180 slipping out of gear in reply to m.tremblay, 02-13-2007 09:35:30  
It was more of a poor design problem rather than operator problem. Why a-c didn't try to correct this in the early years is beyond me. I guess if they figured it would make it through the warranty then it would be clear profit selling parts.



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Doug Sherman

02-15-2007 15:27:36




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 Re: Another AC 180 slipping out of gear in reply to Rich Va, 02-13-2007 10:08:05  
Internationals have a tendency of jumping out of gear and also have transmission problems. There tends to be shifting problems in the 706 to 6788's" , so it's not only the Allis's that had problems.


Clem, Minnesota



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John (MO)

02-13-2007 11:43:15




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 Re: Another AC 180 slipping out of gear in reply to Rich Va, 02-13-2007 10:08:05  
Why then is it that so many of the old AC tractors don't have the problem at all?

It was they way they were shifted by the operator, nothing wrong with the transmissions at all.



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Rich Va

02-13-2007 12:05:10




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 Re: Another AC 180 slipping out of gear in reply to John (MO), 02-13-2007 11:43:15  
All the tractors have operators. And I'm sure the people on this board is only a small percentage of the total past and present owners. Long time ago when these tractors were new,they were working farm tractors. Now it's like many are weekend hobby tractors,not getting the punishment of working 6 or 7 days a week. The transmissions and hydraulics were weak.



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John (MO)

02-13-2007 06:50:39




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 Re: Another AC 180 slipping out of gear in reply to Dale in Michigan, 02-13-2007 06:11:12  
You first need to find out if the problem is with the gears themselves or with the shifting forks and linkage. If you are lucky and the problem is just in the forks and linkage, then yes you are going to cause more harm by trying to force the linkage to keep the gears engaged, but a good fix isn`t real expensive either. If the problem is with the gears themselves then the fix is much more expensive and you are not going to cause any more damage to the gears than already exists. You might however cause damage to the forks and linkage by trying to block the transmission in gear. The problem is caused by operators who did not shift the transmission as it was designed to be shifted. It is not a transmission that you can shift on the go, and if you do, you are going to grind and wear the gears or bend the shifting forks. Some people understood this and shifted the way the transmission was designed and they never had a problem, others had problems with every AC they ever drove.

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Rich Va

02-13-2007 06:30:31




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 Re: Another AC 180 slipping out of gear in reply to Dale in Michigan, 02-13-2007 06:11:12  
This has been a problem ever since the D series. Dad bought a new d-14 in '59 and after about 4 years started jumping outta gear,required split,very expensive. Few years later traded for d-15 series II. Same thing all over again,required split. We soon traded the d-15 for a red tractor and our problems were over.No more a-c. Chances are your tractor will have to be split,parts are available and it will be expensive.

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