Will it hurt if the TA is out?

Anonymous-0 · Sep 12, 2009

Have little experience with Farmalls - only had a cub back on the farm - but would like a SMTA or a 400 just for the heck of it. I see here many references to TA on older Farmalls. Have located a 400, well used but straight. Need your help:
1) how to test the TA to tell if working properly, or barely working, or definately out.
2) if it is out, does it make the problem any worse to use the tractor until I get around to fixing it?

thanks

504-2 · Sep 12, 2009

It may not be right but this is how I checked one Tuesday, I stood on the brakes put it in third gear and dumped the clutch. I did it three times foward three in reverse, shifted the TA and did it twice by then I knew the TA was slipping bad in the high side,we agreed on a price and I drove it onto his trailer.

JMOR · Sep 12, 2009

(quoted from post at 21:50:38 09/12/09) Have little experience with Farmalls - only had a cub back on the farm - but would like a SMTA or a 400 just for the heck of it. I see here many references to TA on older Farmalls. Have located a 400, well used but straight. Need your help:
1) how to test the TA to tell if working properly, or barely working, or definately out.
2) if it is out, does it make the problem any worse to use the tractor until I get around to fixing it?

thanks

ine slips, so I never engage it and have been using it like that for over 20 years.

Janicholson · Sep 12, 2009

The 400 or 450 will be cheaper and far more modern than the SMTA. But less classic.
The easiest TA test is to get it on a country road (or smooth field road) put it in fifth gear TA back, 3/4 to full throttle, and let out the clutch rapidly but smooth (assumes the way is clear) if it takes off nicely and pulls the engine down then picks up speed the one way clutch (sprague clutch) is good. Shift it to Direct rapidly (always shift the lever fully and rapidly either direction, no halfway movement ever.) If the engine slows rapidly then picks up and the speed increases well the TA is Good to Go.
They are really good to have operational. Would it hurt it to operate with a bad TA. Only if it had a bad direct clutch and slipped in direct. A slipping Sprague will not cause problems when used in direct only. JimN

dmiller · Sep 13, 2009

So which position is direct, forward, or back???? I've done the test and mine is either fried, or so far out of adjustment it's not functioning. I really don't need it, all I use the tractor for at the moment is baling hay. Just want to leave it in direct and not worry about it.

Will it hurt if the TA is out?

Anonymous-0

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504-2

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JMOR

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Janicholson

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dmiller

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