Lubelocker differential gaskets.. Used one?

I've found that a good whack from a rock or stump or whatever will cause even the best of RTV beads to spring leaks. The Lubelocker seems like a good idea, but I can pick up a tube of RTV just about anywhere for next to nothing.

/Peter

I used Permatex #77B Ultra Blue on both my diffs about 13000 miles ago. So far, no leaks.

Tom

I was thinking of going with those gaskets as my rear diff seal has started leaking AGAIN. And I know I got a good seal... the only way I seem to be able to get ALL of the old RTV off is with a wire wheel and a drill. The chemicals never quite work and a putty knife doesn't either...

How do you get it off?

I have good luck with a one edge razor blade, then I finish up with a wire wheel on a drill. :-) I prefer the brass wire wheel because it doesn't scratch the steel.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

Eric wrote:

Maybe that's my problem.. I didn't use a brass wire wheel the first time I did it and scratched the steel. Both surfaces were shiny as new though...

I also prep it with alcohol or acetone or BBQ lighter fluid to get all the grease off. One fingerprint on the metal can cause a leak. The RTV also seals best if allowed to cure the 24 hours the directions say before adding fluid or using it. I even use spot lights on them overnight to keep them warm for a good cure if it is cold out.

Mike

Eric wrote:

Marc: LubeLockers looked like a good idea (D44s in Rubicon - stock diff covers), so I got 4 of them. On front I only got half refilled when bolt at 8 o'clock started to drip that expensive 75/140 synthetic!!! Back to the Mopar orange sealant!! Took LubeLocker out and found even though there is 3 silastic beads between holes, only one is used to encircle each bolt hole. The stock covers bend away from the hole towards the inside too quickly thus decreasing the crush on that single silastic bead enough to cause a leak. A non-stock cover with a wider gasket surface around each hole would fix it (the sealing surface on the diff housing is plenty wide enough). I will go back to the LubeLockers when and if I go to an aftermarket diff cover. LubeLocker said they "never heard of it"!! Sound familiar? Bob

Bob,

Thank you for relating your experience. The only bolt I have leaking (but enough to form a drip after parking in the garage after driving), is the 6 o'clock one. I retorqued to 38ft/lb tonight all around and cleaned the diff with a light degreaser and will check tomorrow night before tearing it off. I hope it keeps it dry this time, but if not I still have 3/4 of a tube of ultra black!

thank you! Marc