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Discussion Starter #1
Greetings all,
I found a Farmall 560 with a loader about 100 miles away.

I haven't looked at it yet, but the owner says it starts and runs well. He also says "The TA works on the high side but not the low side." I'm a bit confused in that I thought the TA was the low side of each gear- the high side being direct drive. What could I be missing here? Anyplace you could recommend to me to learn all about Torque Amplifiers?
Thanks for your comments!
-Keevel
 

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Keevel You are right. The high side is direct. For a better explaination see your friendly Case-IH dealer. At least this will let you know where you stand.
Aaron
 

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When the Torque Amplifier is in direct drive(or the handle is forward) you get the normal 5 speeds of the tractor. When the T/A clutch is disengaged(handle pulled back) then you go into low gear. In the attached picture when you are in direct drive item numbers 1, 16, 31, 32, 35, and 36 all spin at the same time, speed and direction as the engine. When you engage the T/A, you are releasing the clutch disk #35 so that pressure plate #36 and flywheel #32 stop spinning along with the planet carrier #16. The power then goes from clutch disk #35 through the shaft #31 into the planet gears #22, gets reduced by 1.482 to 1 and then comes out the shaft #1. At this point what is supposed to happen is that over-running coupler #11 is supposed to keep planet carrier #16 from spinning opposite of engine rotation. If the planet carrier #16 spins in the opposite direction then no power gets to shaft #1 and the tractor stops.

So the problem that the seller is describing is typical of over-running coupler(#11) failure. Although it's an easy fix, the amount of time to get to it usually makes most people either live with it or replace/rebuild the entire T/A while they have it apart. The tractor will continue to function as a normal 5 speed as long as you don't pull the handle back.

-Leon
 

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Discussion Starter #5
Thanks for the replies- love the attached exploded view Szrachnor- and the explanation. If the rest of the tractor is pretty sound, I'll probably pick it up and do a rebuild over the winter. The other tractor I was looking at was an IH 330 with minimal issues. I'll nose around the redpowermagazine forums and see what else I can learn.
-Keevel
 
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