More Quadtrac Questions (Output shaft movement?)

[tthstrm179]

I have a 1978 CJ7 with the AMC 304 and Quadractrac/GM Turbo 400 . I have posted several questions as I work on this system since it is not familiar to me.

Recently I changed the Transfer Case chain which seemed straight forward. While the case was apart, I changed the seal on the rear output shaft.

Yesterday I found that the seal was leaking and removed the yoke to find the seal leaking. It looked like I had not set it deep enough and it was getting chewed up from the yoke sitting too close to it.

QUESTION:
I noticed that the output shaft can move in and out about 1", maybe more. I did not take it out or remove the snap ring from the bearing in it. I know it is sliding back and forth in the primary gear within the case, but is this normal? Wondering if i messed something up.

QUESTION:
Any advice on the seal? I had it driven in flush with the case on the last one.

Thank you!

 

[lutry]

QUESTION:
I noticed that the output shaft can move in and out about 1", maybe more. I did not take it out or remove the snap ring from the bearing in it. I know it is sliding back and forth in the primary gear within the case, but is this normal? Wondering if i messed something up.

I just checked with my spare one (never taken apart, 15k miles):
Rear Output shaft: more or less zero movement, front roughly 0.1 to 0.15".

Here is a pic of the shafts to check if everything is in place as it should.
e.g. thrust washer.

QUESTION:
Any advice on the seal? I had it driven in flush with the case on the last one.

If the shaft moves for 1", I think this is too much, the yoke might not sit firmly.
Here is a pic about the factory position of the rear seal:



It is about 0.1-0.2" lower than the case.

Also do not forget to use RTV for the outer surface of the seal.

 

[lutry]

BTW, what is the movement of the other (front) side?

 

[tthstrm179]

Figured this one out. Sometimes the answer is the obvious one. The yoke was not seated all of the way down on the splines. It had hung up even though I torqued it down. This was allowed the shafted to slide in and out since the yoke keeps it tight, and the movement killed the seal. But I do have another issue, and the case is again apart. Posting under a new thread.