Rear axle seal thickness

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Atmobil
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Rear axle seal thickness

Post by Atmobil » Tue Jul 11, 2017 4:59 am

I need to replace the outer rear axle seals and I managed to find a supplier that has these seals in stock. They are the correct inside and outside diameter but they are not as thick. Check out the pictures.
Can I use these?
Or what seals should I order and from where?

Image
Old seal on the left, new seal on the right

Image
Old seal

Image
New seal
Gaute Halsaunet

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wally426ci
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Re: Rear axle seal thickness

Post by wally426ci » Tue Jul 11, 2017 10:14 am

I don't have an answer, but can you mark where to press them to and stop short of the inner collar? Or use a spacer?

Atmobil
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Re: Rear axle seal thickness

Post by Atmobil » Tue Jul 11, 2017 4:42 pm

I have been thinking of a spacer, the difference is only about 3mm so I could see if I can make a sort of washer as a spacer. The question then is whether I should put the spacer on the inside or the outside of the seal?
Gaute Halsaunet

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Hobcobble
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Re: Rear axle seal thickness

Post by Hobcobble » Tue Jul 11, 2017 7:37 pm

The seal pictured on the right side looks like the ones I've installed
in 3 different 8 3/4 axles over the years. :study :2cents
John

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Re: Rear axle seal thickness

Post by Atmobil » Wed Jul 12, 2017 4:48 am

Interesting, and I guess they all worked fine?
Did you do anything special or did you just drive them in?
Gaute Halsaunet

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Hobcobble
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Re: Rear axle seal thickness

Post by Hobcobble » Wed Jul 12, 2017 10:36 am

Atmobil wrote:Interesting, and I guess they all worked fine?
Did you do anything special or did you just drive them in?
No puddles on the garage floor yet.... :lol:
If you look at the backside of the seal, you'll see a
circular spring around the rubber seal. I applied some
bearing grease to that seal so it wouldn't pop off when
installing [tapping with hammer / wood dowel] it into the axle tube.

I think the FSM describes a MoPar installation tool for
this procedure that probably presses it in. You might
be able to utilize the studs on the axle tube and make
your own basic press.... :thinking :idea The last
thing you want to happen is for that spring to pop off
the inside of that seal.... :banghead Pressing is probably
better than tapping in this case.... I took my chances
for my installations.

John

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Re: Rear axle seal thickness

Post by Atmobil » Wed Jul 12, 2017 12:57 pm

Ok, I will see what I can manage to do. I used a 46mm socket to drive out the old seals from the back. I was thinking of using that to drive the new ones back in aswell but maybe that is not so smart.
Gaute Halsaunet

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