MTA- has anyone heard of a non free-wheel TA?

Bryce Andreasen · Aug 13, 2012

Have an MTA i baught from a guy. He found it strange it didn't free wheel in low side. I drive it around the place and it doesn't freewheel. Even in 5th going down hill, put the throttle to idle and it keeps RPM. Anyone heard of such a thing or is something stuck disguising itself as this?

400Dtractorman · Aug 13, 2012

Have you pulled the TA back when going uphill to see if it shifts into low range. Sounds like your TA clutchs is stuck and keeping it on the hight side.

mkirsch · Aug 14, 2012

When you pull the lever there should also be a VERY noticeable reduction in speed.

I suspect it is not shifting at all.

ihjason · Aug 14, 2012

I have an MTA that has an anti freewheel TA in it. The guy I bought it from had just replaced the TA. I don't know exactly how they work but he said the normal TA has I belive it is nine rollers and the anti free wheel has twenty seven rollers in it.

Bryce Andreasen · Aug 14, 2012

I know it downshifts and works. I'm fairly certain the brakes aren't hanging up. I just found it odd that the engine RPM would stay up when downshifting going down hill. Had a 400 i put a brand new TA in and it definetly freewheeled. Just didn't know if there was such a thing out there, i've never heard of one.

mkirsch · Aug 15, 2012

We haven't heard of one either.

I'm fairly confident in saying that there is no such thing. If there were, it would be the only type available today due to safety issues.

You're looking at a red herring, or a fluke, or a major problem.

I suspect that if you put a load behind that tractor and/or take it down a bit steeper of a hill, it will freewheel.

Janicholson · Aug 15, 2012

On level ground, no load on pavement, with the TA back, in 4th gear, start from a stop and let the tractor get to its full speed. Now put the TA ahead. If it shifts and goes faster, I think all is well. If the lever does not change the speed, the TA is out of adjustment and the TA clutch is dragging. Unless dramatic changes and radical engineering were done to the TA, there is no way for it to hold back when the lever is back. It would require a second mechanical clutch to apply in the TA back mode to hold on deceleration, or down a hill. The big frame tractors with hydraulic clutches have this multi-disk clutch. And it is supplemented with a sprague (One way clutch) for engine power flow. Jim

MTA- has anyone heard of a non free-wheel TA?

Bryce Andreasen

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400Dtractorman

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mkirsch

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ihjason

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Bryce Andreasen

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mkirsch

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Janicholson

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