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Leaky 8.75
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Author:  mopar_nocar [ Sun Jan 01, 2023 7:46 pm ]
Post subject:  Leaky 8.75
The 8.75 W100 leaks around the carrier. I have taken it out before and replaced the gasket...that lasted a few months.

Any tips or tricks about making this thing stop leaking?

Thanks

sb
Author:  DadTruck [ Mon Jan 02, 2023 10:58 am ]
Post subject:  Re: Leaky 8.75
The machined face of the differential housing should be fairly flat and true, but give it a good look over.
The mating face of the axel housing can be warped and distorted.
I don’t put any RTV on the differential side, it gets a dry gasket. I do put a smear of RTV on the housing side to prevent leaks.
It is also important to tighten the differential mounting bolts in a cross pattern to get it set squarely.
I tighten all the bolts hand tight.
Then do 12:00 and 6:00 then 9:00 and 3:00 and continue with that pattern around the differential. Bringing it up to 30% of torque, then 70% then 100% of torque.
Make sure the threads on all the studs and bolts are good. I use grade 8 washers under the nuts.
This is what has worked for me.
Author:  mopar_nocar [ Mon Jan 02, 2023 11:22 am ]
Post subject:  Re: Leaky 8.75
Appreciate it.

Got a new gasket on order....I will implement your tips....one thing for sure, no washers are present.
Author:  Rick Covalt [ Mon Jan 02, 2023 4:55 pm ]
Post subject:  Re: Leaky 8.75
I do similar to Dadtruck. Silicone the casket to the housing. But then I add a thin film of grease to the pumpkin side. That way the rear comes out and leaves the basket behind, since I change rears more than most. :D
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