Rear pinion seal 97 Jeep Grand Cherokee Laredo - JeepForum.com
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Unread 09-07-2013, 06:38 AM   #1
discgolfus
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Join Date: Mar 2011
Location: Neenah, Wisconsin
Posts: 18
Rear pinion seal 97 Jeep Grand Cherokee Laredo

Ok guys looking for a little input/ advice. Had some work done 4 months ago at a shop. Work that I could not do myself, seeing it was there even though I could do this one I had them do the rear pinion seal because it was leaking. 4 months later it is leaking again. I bought a new seal yesterday and put it in. Took it for a test spin and the new seal leaks worse then the one I replaced. I made sure it was put in square and everything else. Any thoughts would be great.

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Unread 09-07-2013, 06:54 AM   #2
zjseeker
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1998 ZJ 
 
Join Date: Jul 2013
Location: Springfield, Ohio
Posts: 15
I bought National brand seals for mine, haven't made the repair yet. There are some good guys here I'm sure can help. I'm interested myself on input. Good luck.
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Unread 09-07-2013, 07:01 AM   #3
V65Ozzie
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1998 ZJ 
 
Join Date: Feb 2012
Location: Wilson, nc
Posts: 528
I've seen the pinion yoke develop a groove right where the seal rides, so even a new seal leaks. I don't know if anyone makes a sleeve for the pinion like they do for a crankshaft, also, coat the seal lip in synthetic grease before you install the seal, that way the seal does not have to ride on a dry piece of steel, and allows the yoke to slide cleanly through it when you re-install it.
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Unread 09-07-2013, 08:00 AM   #4
discgolfus
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Join Date: Mar 2011
Location: Neenah, Wisconsin
Posts: 18
Thanks for the input I believe that may be my problem as you can see from the picture I uploaded you can see the grooves. looks like a 46 dollar part for a new yoke which I guess isn't bad at all. any other theories from anybody just in case would be great
dscf0502.jpg

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Unread 09-07-2013, 09:28 AM   #5
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Location: Sweet Home, Alabama
Posts: 6,862
it looks like pitting on the sealing surface. Use some 600 grit emery cloth to clean it up and re-evaluate.
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