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Unread 08-16-2013, 06:24 PM   #1
Johndeere18
Registered User
2000 TJ Wrangler 
 
Join Date: Aug 2013
Location: Evanston, Il
Posts: 6
Rear differential cover leak

Hey fellow jeepers, I am proud to say I am new to the forum as well as jeeps. I just bought (three weeks old) my first 2000 jeep wrangler sport 6 cylinder 4.0L TJ. It has 137,000 miles and runs like a beauty. I have been in the process of fixing up some minor problems (thermostat) and noticed a leak in my rear diff. There is no oil/fluid on the inside of the tire well so I have reason to believe it is not a pinion seal or axle leak? So I believe it is the differential cover. I have read up and wanted to clarify the process! Any help is greatly appreciated. So first you take out plug then slowly undo bolts around cover to drain fluid, then take off cover, scrape it clean with say, a putty scraper? Maybe use some brake cleaner? Then clean the other side and then put permatex ultra black around seal and bolt it together. Let sit 15 minutes then replace fluid. Should I put in an additive? anything else I should know and how urgent should this be taken care of? Thanks everyone appreciate the help!!

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Unread 08-16-2013, 06:34 PM   #2
tyvanwie
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1998 TJ Wrangler 
 
Join Date: Sep 2012
Location: Boone, North Carolina
Posts: 9,472
Leave one bolt loose at the top so the cover doesn't fall in the fluid. I also used steel wool to clean after using a scraper. Worked fairly well. I just recently got into my diff, and I used a lubelocker instead of a sealant.
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Unread 08-16-2013, 07:11 PM   #3
Johndeere18
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2000 TJ Wrangler 
 
Join Date: Aug 2013
Location: Evanston, Il
Posts: 6
Thanks for the info. Will hopefully be giving this a go tomorrow.
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