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Old 04-23-2009, 03:46 PM   #1
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Diff question

Greetings. I have a 99 with the stock 30 diff in it. I'm leaking fluid right behind the diff, just in front of where the driveshaft meets it. Any clues? And also is it a easy fix? Thanks.

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Old 04-23-2009, 04:23 PM   #2
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Sounds like your Pinion Seal is bad.
It's not too bad, the hardest part is breaking the Nut loose on the Pinion since the pinion will want to move/rotate.

Just remember that there are crush sleeves/washers there so it has to be tighten back to spec.

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Old 04-23-2009, 05:42 PM   #3
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Quote:
Originally Posted by snwchris View Post
Sounds like your Pinion Seal is bad.
It's not too bad, the hardest part is breaking the Nut loose on the Pinion since the pinion will want to move/rotate.

Just remember that there are crush sleeves/washers there so it has to be tighten back to spec.

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http://www.wranglerforum.com/f5/rear...eal-18538.html

Thanks.

By the way, where are you at in Ohio?
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Old 04-23-2009, 05:47 PM   #4
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Mine has been doing that for about 6 month's. Decided to check my fluid a couple days ago and it was still full to the top, a little oil makes a big mess. I'm going to jump into mine one of these days.
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Old 04-23-2009, 08:56 PM   #5
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I'm in the NE corner near OH/PA Stateline
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Old 04-24-2009, 04:25 AM   #6
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AD, if you can help it pull the yoke off the front axle before you go get a new pinion seal. There are two different styles of pinion seal that came in the 30. You'll want to make sure that you get the same style that you have.

It's not a "hard" job, there are just a couple things you are going to want to pay attention too. The first is not fawking up the housing when pulling the old seal out. The second as someone stated before is not to crush the crush sleeve anymore than it already is.

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