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Farmall & IHC Tractors Discussion Forum
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Torque Amplifiers

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tim

02-13-2004 17:15:45




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What are these, how do they work, and what are the effects? What did they come on, and what can you put them on?




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Hugh MacKay

02-14-2004 03:05:03




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 Re: Torque Amplifiers in reply to tim, 02-13-2004 17:15:45  
Tim: The list of tractors having TA is quite long. Remember also it was considered an option so any of the given models may or may not have TA. It was first introduced on the SMTA in 1954. After that time it was available on just about all American built IH tractors except Cub, 100, 130, 140, 200, 230, 240, 404 and a few of the large tractors. Not sure on 600 or 650. The big articulated tractors never had it, nor did hydros. The three largest 88 series tractors had a different system also.

TA would have been introduced on British and German built tractors around 1972, and again tractors under 40 hp did not have TA.

After the CaseIH merger it was gone except for British built tractors and I have no idea how long it remained on those, or if indeed CaseIH continued to build those in Britain. In this group I am refering to 84, 85 and 95 series.

I have probably missed a few but, that is close. You already have good directions to see how it works, so I'll not get into that.

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scotc

02-16-2004 21:47:14




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 Re: Re: Torque Amplifiers in reply to Hugh MacKay, 02-14-2004 03:05:03  
the 2+2's had t/a, the steiger-built ones did not. Our 4240 (CIH not deere) has a t/a, not sure about CNH though, think maybe mccormick is using them now.



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gauger

02-13-2004 19:20:42




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 Re: Torque Amplifiers in reply to tim, 02-13-2004 17:15:45  
The TA is a planetary gearset that changes the input shaft speed to the transmission effectively doubling the number of speeds. Go to www.howstuffworks.com to see a great illustration of a planet/sun gear system.



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