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Farmall & IHC Tractors Discussion Forum
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Non working TA

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jessboyd

01-28-2005 18:11:31




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What happens when the TA "goes out" or "doesn't work"? Does the tractor move? Does it just stick in "low" or "high" gear? How much of a problem is it to fix? Thanks in advance.




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JJK

01-28-2005 19:55:14




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 Re: Non working TA in reply to jessboyd, 01-28-2005 18:11:31  
There are a few things that can happen pending on the problem. Most of the time the low side is what goes, meaning it slips intermitently, all the time, or won't even move the tractor. The high side is the one that will usually work all the time but I've seen this side go bad a couple times. There are clutch plates that burn up, sprags that wear out, even clutch plates that have slipped and welded themselves together. Most of these problems come from operator error. Using the TA for down shifting with a load behind for example will take out a TA pretty fast. TA control lever needs to be adjusted properly, having the dump valve adjusted in relation to the clutch helps to prevent some failiors to the torque. This is a hyd. TA that I'm refering to, maybe somebody can explain the mechanical TA to you because thats a little different system. I have to go now, hope this sheds some light on it for you.

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Ernie Bob

01-28-2005 22:23:49




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 Re: Non working TA in reply to JJK, 01-28-2005 19:55:14  
The mechanical TA's experience the same problems as the hydraulic TA's. The low side is usually the problem and with them it's the ramp and roller assembly. The rollers get flat spots in them and they won't roll up and wedge properly to lock. They also get gummed up from the use of the heavier oil that they used to use in them. I've replaced 2 TA's and rebuilt one and they all had the problem in the ramp and roller setup. As was stated earlier, using the TA to downshift for slowing down or attempting to use it to hold you back going down a hill will cause it to free wheel and they can explode fairly quickly.

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