Axle seals are leaking again

-
This kit has the original lookin Chrysler inner seals. See how they're rubber coated over the metal? I've even seen some original OEM ones that were all rubber. Just real thick rubber.
 
Yeah, that could certainly cause a leak. I've never seen people leave the outer ones out. I eckon cause they are RIGHT THERE behind the flange, but I've torn down countless ones that were missing the inner seals. Not tore up. Just not there at all.
Dang, i'm going to pull my axles now and recheck for outer seals.
 
OE inner seal... has metal OD..
1969dartcleanupweek9.6 132.JPG


1969dartcleanupweek14 122.JPG
1969dartcleanupweek14 126.JPG
 
Inner seal, is an oil seal. The outer seal is a Grease seal for the bearings. The inner seals are commonly damaged when installed improperly. The axle must be centered when reinstalled and not allowed to drag across the seal. The seal lip should be lubricated with Lithium or similar grease so as to not drag on the bearing surface and get damaged. Follow the Factory Service Manual and you will see exactly what parts go in there and how to properly change them. Not complicated. If something is damaged, replace it once. Don't try to save it twice.

Just a question...when was the last time that you checked/adjusted the axle end play ? If they are loose, they will leak. No matter the axle condition. Grooves in axles are never good. Sleeves are just that, a temporary condom.
 
Last edited:
It is the seal closest to the housing behind the bearing. Almost everybody leaves those out.

View attachment 1715722142
.
Well Rusty I learned something from you today.

All these years I never noticed that outer seal.
And I replaced quite a few axle bearings. A lot of them I replace them with the green bearings so I wouldn't have noticed that anyway. But the only reason I can think there would be a seal out there underneath that adjuster or that axle retainer would be just to keep dirt out of getting into the axle bearings. Because the inner seal should keep all the rear end fluid inside the housing.
So a big thumbs up to you Rusty.
 
.
Well Rusty I learned something from you today.

All these years I never noticed that outer seal.
And I replaced quite a few axle bearings. A lot of them I replace them with the green bearings so I wouldn't have noticed that anyway. But the only reason I can think there would be a seal out there underneath that adjuster or that axle retainer would be just to keep dirt out of getting into the axle bearings. Because the inner seal should keep all the rear end fluid inside the housing.
So a big thumbs up to you Rusty.
Outer seal is there also to keep the grease that you pack in the OEM bearings from getting contaminated and from washing out. Reason most people do not know much about them or routinely replace them is because the bearing has to be removed to replace the seal in the retainer.
 
-
Back
Top