Wobbly shifter shaft on tf727

I

IHCScout78

Member
Hi,

doin the transmission reseal while I wait for my engine block to come back from the machine shop.

Pulled the shifter shaft seal, but noticed that the shifter wobbles enough that a new seal will have a hard time hanging on.

Does that mean it will only leak while the shaft is pulled to the side when I shift, or is this something that oughta be fixed?

Transmission has been rebuilt twice before (that I know of) and is in it's second vehicle, but bands are tight and it worked like a champ when pulled.
 
Tf727 shift shaft does not normally move up-down, fore-aft, in-out, it only rotates when shifting.
I normally install two new shaft seals if there is room.
 
Scott's right. I think you May have the throttle valve rod linkage confused with the shift linkage. The tv linkage sits above the shift linkage and tends to be a bit wobbly.
 
I think 1975ih200 is referring to the same shaft that is wobbly on my transmission.

It is intended to rotate when changing gears, but 35 years of rotating normally seem to have added a little slop. Hopefully a fresh seal will be flexible enough to accommodate.

The shaft I am referring to mm calls it a shifter shaft and has lovely pictures of it in the diy reseal series. Check the post from 4-24-2009 at 8:06pm.

The service manual calls it a "manual levershaft."
 
Well, if that piece is that wobbly, I doubt very much that a new shaft seal will tighten things up much for you. Any gain there will be short lived. It is only rubber after all. If it were me, I'd be wanting to pull the vb out for a close inspection to determine what is causing the slop. The old seal is much easier to pop out from the bottom with the vb removed anyway. If you need replacement trans parts, search the webs for wit. Whatever it takes...sometimes that's what ya gotta do.
 
Hope springs eternal.

I had another transmission shoved in a corner of the garage. Good news is the shifter shaft does not wobble. Bad news is the spare transmission worked fine right up until it sucked water in a mud pit.
 
Okay here's what I suggest. Setup the spare trans so you can drain the contaminated fluid in a controlled fashion. Pulling the dipstick tube and tipping the case with a large catch pan underneath works well. Once drained you can then remove the pan. Make sure you have either the a727 torqueflite handbook by carl munroe, or an IH service manual on hand before going any further. What you want to do is remove the vb from the spare trans, disassemble it, deuche it out and keep all parts surgically sterile as if your life depended on it, and reassemble according to the steps/pics set forth in the aforementioned literature. Swap the cleansed and assembled piece in place of the sloppy unit. Done and done. Next issue.
 
Another thing you could do that might require less work than my previous suggestion, would be to drop the pan on the working trans, pull the valve body and see why the shift shaft is sloppy. Might be a simple fix. But I think ignoring it will eventually lead to more serious issues down the road...as in failure to engage gears properly. I don't know. I've been into several of these units and have not encountered one like you describe. Sumpun ain't guuder up in thar.
 
You must log in or register to reply here.
Back
Top