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Diif leak or cv

Posted: Fri Apr 14, 2017 9:06 am
by Rocrusher
Can anyone tell me if the diff output seal can leak and you don't see it till the inner cv comes out. I have gear oil come out when i lowered the cv on pass side. If there is an opening in the end of the cv i geuss it could be grease oil from seperation. I find it hard to beleieve the diff would leak and only stay behund the cv mount.

Re: Diif leak or cv

Posted: Fri Apr 14, 2017 10:43 am
by Monk
I'm thinking its your output flange seal,

When you change those it's best to change the flange seal and the blue star washer..


Roy just helped me change mine few months ago, pictures might help as the blue start seal is a easier fix.... But for the extra 15 mins both imo should be replaced if leaking


Older thread, but lol your not alone., those leaks drove me crazy


http://www.canadianhummerclub.com/forum/index.php?/topic/4884-differential-seals-output/?hl=leak

Re: Diif leak or cv

Posted: Fri Apr 14, 2017 2:19 pm
by Roy
Correct, the blue seal when worn out leaks thru the nut. Now I put a small amount of sealant on the nut flange when doing this job with a new seal. Added safety

Re: Diif leak or cv

Posted: Sat Apr 15, 2017 9:21 am
by Monk
And lol, like Roy said, "a little" sealant, unlike me who "the first time I ever did it". put a soft ball size of silicone all over the nut/flange lol was trying to cover all bases,

And STILL that bugger leaked when I did it,... Man that days I almost went insane as I couldn't believe there was still a leak...

Re: Diif leak or cv

Posted: Sat Apr 15, 2017 5:13 pm
by Rocrusher
The one thing that needs to be done when you seals things with rtv is clean clean and more clean. I usually clean things 3 time with brake clean before sealing and cant remember the last time something leaked afterwards. Sealed my output flange last night and is now leak free!



Re: Diif leak or cv

Posted: Sat Apr 15, 2017 5:18 pm
by Monk
Awesome!!

I've watched MOAB videos, and seen some of those USA guys didn't use the blue seal, they just filled the output area " the right stuff sealer" and swear by it,..

That's my bad issue, prep/cleaning I tend to rush on that, and that makes or breaks a job, I 100% believe as well

Re: Diif leak or cv

Posted: Sun Apr 16, 2017 2:27 pm
by Rocrusher
I new about these washer before but i have never used them. I have done alot of dana 60 axles and always used rtv with no ossues. I keep it in on the h1 as i make it need less rtv. An yes i love the black " right stuff". I use that shit on everything! Lol

Re: Diif leak or cv

Posted: Sun Apr 16, 2017 3:56 pm
by Monk
Dana 60s that brings me back,

When I was younger I had a street monster truck....

5:13s/ Dana 60 front/ Corp 14bolt rear..

Lockers (noisy around corners)

Lol had 21" total loft on an 87 chev Silverado, was a zamboni body....

Re: Diif leak or cv

Posted: Sun Apr 16, 2017 4:01 pm
by Monk
This was my truck, I built from scratch

Lol was in the movie

Red greens

Duct tape forever movie for a little spoof


This was a movie shot

Re: Diif leak or cv

Posted: Sun Apr 16, 2017 4:03 pm
by Monk
Lol, when we sold our first house the real estate person tell us the parking somewhere else because it made the house look small, haha