5.0stang123

Hey i noticed over the winter the garage is covered in oil from my stang . I had the rear end rebuilt a year and a half ago and they did a bad job and had to redo it to get rid of the whine. It still wines at certain speeds though...Anyways ive recently found that its leaking from the front of the rear end and i believe its the pinion seal..

Has anyone done this how hard is it to do? What tools will i need ect..Ive read up on it and seems i cant get a clear answer, everyone tells me something different.

5.0stang123

No one has experience with this?

mjr46

patience my friend^^^^^^ it's daytime..most are at work , including me............pinion seal is posibble, however, the flange sealing surface needs to be inspected for a groove, in theroy if you ever remove the pinion nut or back off the preload, you need to install a new crush sleeve and reset the crush/preload = proper way but that involves removing the differential and pinion....I have done it the quick way before by removing the nut and using a puller to remove the flange, then remove seal, install new seal and reassemble and when it comes time to install nut, I use a new one as it has a seal coating on the bottom, then I tighten it down by hand until it stops and then give it a small blip or two with an impact, not much though or it'll crush the sleeve even more and preload will be wrong.

5.0stang123

Ya but don't you have to measure preload with a torque wrench or something? Or i also heard if marking it and counting the threads but that seems inaccurate. I want to be as accurate as possible and not **** my rear end up.

mjr46

inch lbs beam or rotational torque wrench is needed...you can try the marking methood, I don't do it that way, I use a rotational torque wrench to measure it

5.0stang123

Ok,guess ill have to go spend money on a torque wrench...all i ever see is the click kind though. How come i cant use the click style? And how exactly do you measure preload? is it just the amount of friction to turn the gears? Guess the drums have to come off then? What about axles? Also no idea what spec is.

mjr46

^^^^click kind doesn't measure rotational drag/preload, that'll just measure break away

mjr46

this :http://www.google.com/products/catal...d=0CE8Q8wIwBQ#

this is what I have/use:
http://completeoffroad.com/i-159807-...wdfx150in.html

5.0stang123

Oh ok thanks, i dont think ill use an impact gun as im scared ill over torque it. Can i just use a breaker bar or something? What is the preload spec i should measure? And is it ok if its a bit more then it was? Don't wanna take any chances on this.