Kelly: If you are planning on rebuilding you T.A. I will list what I generally see wrong in most T.A.' I rebuild.
-check all gear teeth on planetaries as well as input&output shafts for flaking. If they are flaking there is not much life left in the gears.-checkneedle bearing surfaces;2 on output shaft and all three shafts in planetaries. I see ANY amount of flaking I replace. -Install NEW needles in planetaries! -I check needle bearings in carrier and primary(input) shaft for play.If I can stick an o-ring pick point well inbetween neeldles, they are worn and need to be replaced. -The thin bearing which fits inside the ramp is fragile. I have broken many just taking them off and I have had one instance where a T.A. I rebuilt had that brearing fly apart after being installed. Use care removing and installing and check outer race for fine cracks running around race. -As mention in previous posts the ramp should be replaced. If you use your tractor hard or often you would be better to install the H.D. ramp(sprague). An extra $100 I know, but money well spent. -as for the clunking noise I doubt very much it is in the T.A. Most T.A.'s I rebuild, if one tooth goes out they all go out together since they are timed and macthed. My Super M has had the inner axle bearings go out several times producing a similar clunking noise. To check, take out the pto, remove bull gear(by sliding axle out of axle housing. You can see if bearing is out and replace. Note: reinstalling bull gear by yourself(aligning the splines) can take some time as well as just the right swear words, but when spoken in just the right tone can do wonders.
Post back with any other rebuiling questions.
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