Changing D30 axle seals
Thread Starter
Honorary Moderator
Joined: Mar 2010
Posts: 8,135
Likes: 16
From: Gilbert AZ/Las Cruces NM
Year: 1996
Model: Cherokee
Engine: 4.0 upgraded
So today while changing my axle seals I screwed up both of them 
I tried doing the extensions with a socket method:


I tried the all-thread method:


and I could not get the seal to seat properly no matter what I did. So now i need to pick up 2 more seals..... and try again.
I want your opinions on how to get these to seat right so they dont get ruined again.
Have any of you replaced yours?

I tried doing the extensions with a socket method:


I tried the all-thread method:


and I could not get the seal to seat properly no matter what I did. So now i need to pick up 2 more seals..... and try again.
I want your opinions on how to get these to seat right so they dont get ruined again.
Have any of you replaced yours?
CF Veteran



Joined: Apr 2009
Posts: 18,786
Likes: 14
From: CT.
Year: 88
Model: Comanche (MJ)
Engine: 4.0 HO
I've done mine and had 1 leak and had to go back in and do it over.
All I did was use the socket and extension hammer trick and done so on other vehicles with rarely a problem.
hmmmmm..... have a friend there to watch and make sure they go in straight?
All I did was use the socket and extension hammer trick and done so on other vehicles with rarely a problem.
hmmmmm..... have a friend there to watch and make sure they go in straight?
aka Wade-O
Joined: Dec 2008
Posts: 3,703
Likes: 10
From: IN
Year: 1989 Comanche
Model: Cherokee
Engine: 4.0
i just hammer them in with a punch or something like that. just go easy all the way around the seal until it seats. i never had a problem with them leaking.
Thread Starter
Honorary Moderator
Joined: Mar 2010
Posts: 8,135
Likes: 16
From: Gilbert AZ/Las Cruces NM
Year: 1996
Model: Cherokee
Engine: 4.0 upgraded
i tried that... I cant get the darn thing to seat strait. the seals i just bought are ruined so until I can get new ones I cant try anything. I have been looking for an inner axle seal tool but noone carries them anymore...

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one thing also to remember, is that if you drag the threaded rod against the seal, you run the chance of ruining the seal. Wrap the un-used thread in electrical tape to to prevent tearing the seal.
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
you could try this guy's method - seems bulletproof
http://www.stu-offroad.com/axle/d30seals/seal-2.htm
http://www.stu-offroad.com/axle/d30seals/seal-2.htm
CF Veteran
Joined: May 2010
Posts: 1,680
Likes: 5
From: Western Michigan
Year: 1993
Model: Grand Cherokee
Engine: 4.0l inline 6
He makes it look easy, geuss haveing a buddy help on that kind of thing would greatly improve the install ( just the extra cost of drinkables). To bad theres not a way to test the seal before you put things back together, to make sure the leak is fixed.


