Nevermind, i think i found something at AZ that'll work. It's a 1.5" diameter rubber seal. There's a nut on the end, i think it's to expand the rubber. This just might do it.

http://www.autozone.com/images/produ...tr02603003.jpg

Any thoughts, please comment. Otherwise i'm gonna try this when i get off today. I'll keep you guys posted.

 

Do the splines go all the way back? I couldn't tell from the pic. If frost plug doesn't work I would ask a transmission shop. Question is why did the original end come out? Is the slip yoke going to far into the extension housing forcing the output shaft to push out the plug?

Regards

Jean Marc Chartier

 

Truck was recently hit from the rear. Not too bad, but the dumbass hit the rear DS tire. It popped, bent the leafs, bent that front hanger, and pretty much pushed my axle toward the front a little. I'm thinking that did it. It did give me a good reason to slap a bunch of new parts on there though.

Yes, the splines do come all the way out. But the output shaft doesn't slide that far in, and i think the rubber plug will do the trick without inhibiting the sliding movement of the shaft. So long as it's agreed that there should be a plug there.

 

I cannot tell you how far the plug should go in but I should mention that if the rear was hammered hard enough to pop that cover you may have other damage that is not yet evident. Have you checked the U joint? It is not made to endure that kind of stress. It is built to withstand twisting motion not pushing. Is the bushing inside the extension housing OK? Once the slip yoke bottomed out the output shaft had to be taking a beating. Did it do unseen damage inside the tranny when it was pushed? Again the output shaft is not meant to be pushed but twisted.

Regards

Jean Marc Chartier

 

It wasn't pushed in that far, definitely not to the point of "bottoming out". Bushing looked fine when i had the driveshaft off, i even tried to wiggle the output shaft, but it was as stiff as should be. Trust me, i was looking for any kind of damage in there. I like to cover all bases when doing repairs.

I have already purchased new U's from NAPA. I just wanted to get this minor leak taken care of first. Driveshaft is easy enough to drop by myself, so i can do the U's at any time.

 

I would revisit the idea of welding a cap on to cover the hole up. I had to do that on an old Toyota truck I had. Mine was actually suposed to have a vent hole but as the truck got miled up the yoke wore and fluid starting moving down the shaft and out the vent hole. I could not find a replacement yoke at that time. They just were not made. I welded the hole shut and put another 80,000 miles on the truck with no issues. A rubber plug will eventually leak even if you could get it to seal against the splines. If you don't want to get a new yoke, weld a cap on the old one. IMO it is a more permanent solution.

 

Thanks Grizz, i'm not going to seal it up as it is a breather hole. This weekend i'm going to drop the driveshaft and figure out why it's actually leaking. Other advice leads me to believe that the rubber ring that goes around the output shaft is not in place where it should be. I'll post back with results.

BTW, my buddy has a 89 'yota pickup. Good parts are hard to find for those trucks. Makes me happy when i see the abundance of parts for our rigs. Good ole Fords.

 

I would pull the extension housing and check for cracks or other damage.

Regards

Jean Marc Chartier

 

From what JMC posted in post #11 the yoke has or in your case had a solid metal plug over the hole you now have. I am assuming that when your truck was rear ended it was punched out. Unless you can purchase that OEM yoke plug I would cut out a filler plug and weld it on. That was my conclusion by what has been posted so far. Let us know what you find out I am interested to hear what is going on there.

 

First off, i wanna say thanks to you guys for taking the time to try and help me out. Much appreciated!

I will get to the bottom of this, one way or the other! I could do it the easy way and just buy a new slip yoke w/ a sealed end. But i'd rather dismantle it and see what's wrong, because it didn't always leak. It really could be something as simple as a rubber ring not being in place on the output shaft.

Whatever it is, i'll be sure to post back with results. Thanks again.

 

Ok leak is stopped for now. That ring that goes around the output shaft was pushed too far back. I couldn't get to it though without doing some damage to the new slip shaft seal. So i just cleaned the slip shaft up and applied some grease to the splines. Seems to have stopped it. Thanks for all the help guys.