M-ta clutch trouble-Need suggestions-Please

Restoring it.Put new clutch and pressure plate from HyCapacity.Removed the bolts that keep the pressure off after it was bolted to the flywheel.I started the tractor.Ive got a working pto,but tranny gears arent turning.You can shift it to any gear without the clutch.There was no tranny trouble when the tractor quit,so it must be something silly Ive done,most likely.Anybody had a similar experience? Ive redone several and never had this happen.Thanks

I don't know what you did or didn't do but the first thing I would do is take the little four bolt cover off the ta and get hold of the input shaft. That should help determine your next step.

good idea Pete.Any idea why I have working live pto,and no gears in tranny turning?

The PTO is driven before the TA gets power. The TA could be toast. The TA clutch could be toast. Jim

Thanks Jim.Im trying to remember how they are in there. Its been 30 years since its moved on its own power.Its been 10 years since I did my 400 TA,but it at least had the hi side working.This booger has neither.If that TA Clutch is shot would thatcause the gears not to turn?

I took the whole top cover off the TA . Everything looks great,clutch works right,sun gears lock in and turn.It all looks new in there,but the kicker is,that the shaft coming through the center of the TA UNIT IS SLID BACK AND DISCONNECTED FROM THE DRIVE GEAR IN THE FRONT.I can see all splines and end of the shaft when the TA is forward.Aint no wonder I got no tranny power(its disconnected)Looks like that shaft has good as new splines.Any thoughts as to why it'd be slid back and disconnected? Thanks,Rob

If you mean the shaft from clutch plate to the t/a sun gear shaft? May have pushed the pilot bearing apart in the flywheel when joining the split. Or somehow pushed the splined coupler on the clutch shaft forward on the shaft. Can you see splines on the clutch shaft behind the coupler? coupler should be far enough back when looking through top to not see splines on the shaft.
Even if the pilot bearing is apart I can't remember if the clutch shaft will slide far enough forward to disengage the coupler with the pto drive shaft and gear in place. Can't remember if it was 300 size or the bigger tractors that IH started turning the clutch shaft down closer to the coupler after problems with the bigger diameter contacting the PTO drive shaft. They are pretty close. That's why I'm not sure the shaft would go forward enough to disengage with pilot bearing bad.
Also would take a good bit of pressure to push the T/A shaft back. Pretty stout snap ring or bearing would need to give. Anything could happen if bolts were used to draw together.
Later IH added a internal ring to the splined coupling to keep it more centered on the splines. SMTA didn't come with the ring. Never saw one get completely off the splines without the ring though. Sure sounds like the clutch shaft pilot bearing is damaged even though I can't remember if the shaft will slide that far forward.
Just things to check since I can't remember the clearances.

I can try to get a pic,but this shaft is coming from the back,up through the middle of the TA unit facing forward.The gear in the front that slings all the oil and drives the bottom shaft is turning,but the shaft in the middle of the TA looks like it slid back toward the rear of the tractor.It HAS to come forward somehow?

If its the transmission input shaft that goes up into the T/A unit that is to far to rear? It has the belt gear box drive gear and also drives the constant mesh gear? Also the transmission main shaft pilot bearing goes inside it? If that's it the only way to get rearward I can think of is a bad bearing, retaining ring failed, retaining bolts for the t/a unit housing broke or backed out, or something is broken. If rear shaft going into t/a bearing is okay a retaining ring keeps shaft from sliding in the bearing and the bearing has a retaining ring on the outer race.
Shaft can't move to far to rear before main shaft pilot bearing bottoms or belt drive gear contacts the constant mesh gear.
Or maybe I still misunderstand.

Its not the shaft the belt drive gear is on.Its the shaft behind that.It looks like there should be a coupler right near where the TA throwout bearing is.Thats where the split is,and where its disconnected at

That's the place I was posting about in the first post. Yes there is a splined coupling that joins the clutch shaft and the t/a sun shaft. Maybe when you split the tractor you moved the clutch shaft forward enough for the coupling to fall off into the bottom of the t/a clutch compartment. Can't remember if normally the shaft will move forward enough for the coupling to fall out with the pto drive gear in place though, unless something else give. If there's no coupling look in the bottom for it or pieces of it.

I bet you're right.I took that entire shaft out of the front to put in a new front tranny seal.I'll take a look.Im sure anxious to make her move again.Thanks a lot guys!

I'll bet that he is right when you pulled the shaft the coupler must have fell off. Good luck

Thanks Tom,,I bet he is right too..Stupid me!!LOL. Im gonna try to get after it the next 2 days,an maybe figure something out.Thanks Everybody