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T/A on 450

H

Hugh McKinney

Member
Hello all, I hope the weather has cleared where you are. Today is the first "nice" day we've had in about a month in Louisiana. Anyway, might I ask a rather "dumb" question about my 450? I took the T/A lever off a couple of years ago while it was not running, and I misplaced it, and now I'm trying to reinstall it and see if the T/A will work. Do you push it forward or backward to make it "downshift"? And, is it likely to hurt it to try to operate it? It doesn't make any noise as it is, but I don't know if that is a good sign or not. By the way, the email is open. Thanks, Hugh
 
Forward is direct drive. Back is torque amplifier.

The worst that can happen when you test it is the tractor stops moving when you pull the lever. That is NOT a problem that can be "adjusted away" unfortunately.
 
Back is "low" forward is "high". You will need to adjust the linkage before you can test it, I do not know if the procedure for the 450 is the same but my I&T manual shows it for my 300. Janicholson has also posted a helpful method of adjusting them, if you search the archives it should be findable.
Zach
 
And as always, when you do try it, pull the lever "like you mean it", don't baby it or ease it into TA, and try it either with a load or going up-hill, or both.
 
One thing to note if operating with a lever\linkage other then factory. If you pull the lever too far back the throw out bearing can get into the t\a clutch fingers and destroy the t\a. Been there, done that.
 
If the link from the main clutch shaft to the T/A clutch shaft is off or not moving the T/A shaft. Before pulling the lever I would remove the cover over the T/A clutch and check condition of the release bearing and T/A clutch fingers and springs. Also the T/A clutch may be stuck if the link between shafts wasn't operating. Also if the link wasn't working and you don't have a hard time shifting the transmission out of gear at times. The T/A probably doesn't work.
Forgot to say for IH linkage adjusting specs you need to use the one for a 450.
 
Well, thanks to all who wrote back. I did check to see that the rod that goes from the t/a lever to the t'a and main clutch, would move freely, and it would. I asked my older brother about the adjustment on it, and he said the last time it was run, the t/a worked. (I haven't moved the adjustment since I started fooling with it). My next question is, would it hurt it to jack up one wheel and shift it from high to low (say in first gear for safety reasons) rather than having it under a load? I think that it is all right, I just don't want to mess it up when it's this close. Thanks again.
 
Sounds like the T/A clutch was still operating and releasing when the main clutch was disengaged. So the only thing to worry about when trying it is the rod adjustments. Like another poster said the T/A pressure plate fingers can be moved to far with the wrong adjustment.
 
(quoted from post at 19:36:15 12/16/13) Well, thanks to all who wrote back. I did check to see that the rod that goes from the t/a lever to the t'a and main clutch, would move freely, and it would. I asked my older brother about the adjustment on it, and he said the last time it was run, the t/a worked. (I haven't moved the adjustment since I started fooling with it). My next question is, would it hurt it to jack up one wheel and shift it from high to low (say in first gear for safety reasons) rather than having it under a load? I think that it is all right, I just don't want to mess it up when it's this close. Thanks again.
Click to expand...
Pretty hard to see if it's working that way. It will slowly "coast down" a couple RPM on the big tire and hardly be noticeable. Tire will have momentum and that's not good for the TA either. the early TAs were meant as a temporary "through a tough spot" pull, and will coast on the level or down hill, so trying it that way without a load is not the right way to see if it's working.
 
Thanks to you both for the further clarification. And yes, I'm gonna be real careful not to pull it too far back and mess up the t/a throwout bearing. Hope ever'body has a good, safe Christmas. Hugh
 
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