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Old 10-12-2005, 01:52 PM   #1 (permalink)
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Question transfer case rear oil seal replaced but still leaks

Ahoy!!!


I have a problem with my 1995 jeep grand Cherokees transfer cases rear oil seal.
It started when my girlfriend drove the jeep and the rear u-joint went out.
No big replace the U-joint. Than I noticed the oil seal was leaking.
Replace that, it still leaked.
Thought maybe the guy did give me the wrong oil seal for the NP242 transfer case
replaced it again, still leaks. Checked for burs and found none.

any ideas on what's wrong?

Note I search the forums first to see i this was already asked
thanks
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Old 10-12-2005, 02:49 PM   #2 (permalink)
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Groove

Did you look for a very small groove in the tail shaft where the seal rides I have had axles that have done the same thing it seems like it dosnot take much. Sometimes when brake the factorey seal its hard to seal them back up hope this helps.
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Old 10-12-2005, 03:16 PM   #3 (permalink)
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Quote:
Originally Posted by Piratejeeper
Ahoy!!!


It started when my girlfriend drove the jeep and the rear u-joint went out.
Failed how? If the joint gave out while driving and the d-shaft was banging around you could have bent the output shaft.

Check for play, and check for debris in the mounting surface, and check surface the seal rides on for debris/rust/pitting.

...and dont let the GF drive your junk!
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Old 10-12-2005, 03:26 PM   #4 (permalink)
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drive shaft slip yoke leaking from the pressed in disc on the ujoint end happens all the time. check there.

Wayne
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Old 10-12-2005, 04:38 PM   #5 (permalink)
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check your tail shaft housing it could have a small crack on it. its just pot metal and it breaks real easy. and that crack just might be were your seal is.
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Old 10-13-2005, 03:33 PM   #6 (permalink)
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What brand of seal did you use? I know it sounds weird, but ive had "autozone" seals fail on three seperate occasions on my XJ...one worked for about a day...the other 2 failed within minutes of install. Got a Federal/Mogul one from AdvanceAuto and the leak went away and havent had any issues with it since. Go with a QUALITY brand from a place like Napa or your other better auto part stores...id be willing that will probably eliminate your problem.
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Old 10-14-2005, 09:46 AM   #7 (permalink)
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everyone
thanks for advice
I will check into them all.

I did check to make sure it was not leaking at the transfer case and oil seal

Jeffro600 i used autozone, first that one sucked,
than I bought one from Autovalue that work the best (Federal/Mogul I think)
The current one is from NAPA.
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