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Unread 04-26-2010, 11:33 AM   #1
Jeepfan Jeff
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1990 YJ Wrangler 
 
Join Date: Jan 2005
Location: Muskogee, Ok
Posts: 286
Rear output shaft seal

I replaced the rear t-case output shaft seal and 1 week later its leaking. Why, I cleaned everything and didn't see any wear on the yoke portion. The parts store guy said there is a sleeve that you drive onto the yoke, does anybody have any experience with these?

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90 YJ, 4.2, 5sp
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weber 551-38
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Unread 04-26-2010, 11:50 AM   #2
idaholtby
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1991 YJ Wrangler 
 
Join Date: Apr 2008
Location: Meridian, Idaho
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Quote:
Originally Posted by Jeepfan Jeff View Post
I replaced the rear t-case output shaft seal and 1 week later its leaking. Why, I cleaned everything and didn't see any wear on the yoke portion. The parts store guy said there is a sleeve that you drive onto the yoke, does anybody have any experience with these?
The design of the slip yoke lends it'self to leaks. That being said, it should last longer than a week. There is also a bushing in the tail housing that minimizes lateral movement. If the bushing is shot, it will quickly destroy the seal. An S.Y.E. eliminates all of this if your wallet can afford it. Have you any driveline vibes? With a 3" lift you would definitely benefit from having one even if it isn't totally necessary.
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Unread 04-26-2010, 12:01 PM   #3
Jeepfan Jeff
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1990 YJ Wrangler 
 
Join Date: Jan 2005
Location: Muskogee, Ok
Posts: 286
I don't feel any vibes and I crawled under and gave the d-shaft a good grab a hold and shake test and didn't really feel any movement, buy I went ahead and ordered bushing and seal anyway.
__________________
90 YJ, 4.2, 5sp
3" rrrrrough ccccountry lift
custom f/r bumpers w/swingaway tire carrier
weber 551-38
nutered and juiced
Ramsey Pat. 9500
(5)33x12.50x15 wildcats
eagle alloys 058
Missouri Offraod Outfitters over the top axle truss
M.O.O. rock bruiser diff cover
bushwacker cut-out flairs
shrockworks rock sliders
sorry no pics of the Schrocks & Bushies yet(but soon)


personal garb.
[URL=http://photobucket.com/albums/y81/jeepfan00/]http://photobucket.com/albums/y81/jeepfan00/[/URL]
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Unread 04-26-2010, 12:14 PM   #4
idaholtby
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1991 YJ Wrangler 
 
Join Date: Apr 2008
Location: Meridian, Idaho
Posts: 2,554
Be sure to clean up the slip yoke with emery cloth to where it is completely smooth before you install the new parts. Any debris or corrosion on the slip yoke will quickly hamper the seal when the suspension compresses and the yoke slides past your new seal. Again, even with a good seal, and good slip yoke mating surface, you will always have some minimal "sling" leakage, but it should not cause any drops or puddles under your rig due to fluid loss.
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