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24-07-2015
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Newbie
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Join Date: Sep 2013
Location: Newcastle
Posts: 35 What Jeep do I drive?: TJ
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Leaking rear diff
So I was walking back to my car after work the other day and noticed a wet spot on the side of the fuel tank skid and investigated further to see that it was diff oil leaking out the top of the breather. I am away till next weekend so just wanted some ideas. Oil is fairly fresh, can't figure out what's happening. Thanks for any help
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24-07-2015
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CrawlerStar
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Join Date: Jul 2014
Posts: 1,657 What Jeep do I drive?: WJ
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try looking to see if the vent pipe is on and is not split.
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24-07-2015
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Full Flexer
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Join Date: Apr 2011
Location: kincumber south
Posts: 686 What Jeep do I drive?: TJ
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Have you just installed an ARB Airlocker , or have an old one in there?
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It doesn't matter how big a problem you have with your Jeep,it's nothing that money can't fix.
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26-07-2015
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Newbie
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Join Date: Sep 2013
Location: Newcastle
Posts: 35 What Jeep do I drive?: TJ
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Is the vent pipe just the part at the top of the breather? And no haven't opened it since about 12 months ago when I changed the oil, it's all stock inside
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27-07-2015
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Established Member
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Join Date: Apr 2013
Location: western sydney
Posts: 124 What Jeep do I drive?: TJ
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high oil level with aftermarket diff hat puts oil level up to axle. When the axle rotates it slings oil into the fitting causing it to not vent. Soon after it will suck air in through the axle seals and pump oil out through the breather tube. You may have to pull your drums off to check axle seals.
If this is the case, remove vent fitting from diff tube. Grind it down to add clearance away from the axle. Replace axle seals, lower oil level. Use compressed air to clear the vent hose.
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28-07-2015
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CrawlerStar
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Join Date: Jul 2014
Posts: 1,657 What Jeep do I drive?: WJ
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all diffs out of any car need to be checked on LEVEL ground .......as far as I know , so if you have over filled it , the excess oil has to go somewhere . oil expands when hot. MidnightRiders is correct , if you have overfilled it ,
Last edited by bleetnblurt; 28-07-2015 at 09:27 AM.
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30-07-2015
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Newbie
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Join Date: Sep 2013
Location: Newcastle
Posts: 35 What Jeep do I drive?: TJ
Likes: 0
Thanked 2 Times in 1 Post
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I have been driving it for over a year since changing last time and it's only just started leaking so not sure that's it, but I'll pull the drums and check the seals
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