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Farmall 350 TA clutch questions

A

Anonymous-0

Well-known Member
Greetings,

I recently picked up a 1957 Farmall 350 and I have some questions about the TA clutch. I have been doing a lot of reading on this forum about the TA and how to test it. I drove the tractor arround yesterday and tried to get it to move in fourth gear going up a slight incline. Right away the what appeared to happen was the TA clutch is slipping. I adjusted the TA linkage and the TA does work, but I think the clutch is shot. I also discovered that some filled the tranny and the TA housing with 80-90 gear lube not Hy-Tran. My questions: Is the TA clutch a wet clutch? Did the 80-90 gearlube contribute to this failure or has the clutch just had it's day? I am also looking for a source of parts to rebuild the TA this winter. I want to use this tractor as a puller so want to rebuild the TA as a heavy duty unit.

Any suggestions or advice?

Oregon Tractor Jack
 
Ta clutch is a dry clutch. If there is oil on it the ta carrier seal is leaking. I believe there was a bulletin out from IH that said gear lube shouldnt be used it can make a ta slip and fail. Using gear lube was something done by backyard mechanics years ago to slow down leaks.
 
Side note: i recently purchased a 350 ta housing and tranny but the ta is bad and needs replacing. If you find a good place for parts please let me know.

Good luck with your ta!
 
Not sure about the way you checked? With the operating handle pulled back the tractor will only stop if the T/A parts that lock the carrier from spinning backwards are bad. T/A clutch is disengaged in that position. With the handle forward the tractor will slow to a lower speed if the T/A clutch slips or completely stop if the clutch and T/A are both bad. Also the main clutch can slip also to stop the tractor in or out of T/A.
 
Take the cover off the T/A section. You will be able to see the clutch. The thickness of a new clutch disk is 0.320". I have not found service limits for the clutches, but in the past 0.060" wear resulted in a slipping clutch.

Greg
 
The TA clutch will wear out if the TA is adjusted wrong, if the main clutch linkage is pulling on the TA clutch linkage all the time, for example.

What you are looking for is the tractor to HOLD with the clutch pedal halfway out on an incline, in a forward gear, with the TA lever ahead. It should not roll backwards down the hill.

If the tractor tries to freewheel down a hill with the TA lever ahead, the TA clutch is likely shot.

It's not a major deal to replace, but it does require splitting the tractor at the bell housing.
 
Everyone,

Thanks for your replies. A little update on the TA clutch. I pulled the inspection plate off last night to take a look. The clutch looks clean and dry. Actually it looks fairly new. I could still see the groves in the disk face from the side view. The inspection cover has what looks like an impact hole that has been welded shut. This makes me think the clutch blew up due to a run away and it has been replaced at some time in the recent past. The guy I purchased it from lived on some pretty hilly property so I would not be supprised. I think I am going to try and dump the gear lube and try running Hytran and see what happens. Going to put this project on hold for awhile. I am hauling tractors this week to the local tractor show and that pretty much eats up the rest of the next few weeks. Thanks again.
 
Another question: What made you think that the TA clutch was slipping?

The only clutch slippage you would notice is if the main clutch were slipping. If the TA clutch slips, the tractor would simply move in low TA.
 
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