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-   -   Transfer Case Seal Leaking, Full Time 4 Wheel, Quadra Drive System (http://www.jeepgarage.org/f203/transfer-case-seal-leaking-full-time-4-wheel-quadra-drive-system-16543.html)

oscar 12-21-2010 11:29 AM

Transfer Case Seal Leaking, Full Time 4 Wheel, Quadra Drive System
 
Hello everyone, my 99 Jeep Grand Cherokee has the 4.7 V-8 and full time Quadra Drive system that works great. The rear seal on the transfer case started leaking at about 99k miles about 2 years ago. At 101k it had to be replaced again because it started leaking again. The Jeep dealer replaced the seal this time, at no charge, and filled the transfer case with synthetic as now recommended by Jeep. It used ATF before changing to synthetic fluid. My Jeep now has about 104k miles on it now and the transfer case has been leaking again. In about 3,000 miles it leaked about 4 ounces of fluid. I purchased the vehicle with about 79K on it, it has the up-country suspension. I have not done any towing with it myself but do not know how much it may have been used for towing by the original owner. If anyone has some ideas or suggestions please let me hear them. Some options I am thinking about are as follows; Do I need a new transfer case, should I try an after market seal instead of the factory replacement seals that have installed. Is there a problem with the synthetic Mopar transfer case fluid that I am now using.
Thank you for your comments and suggestions....Oscar

cheapjeep 12-21-2010 06:45 PM

Re: Transfer Case Seal Leaking, Full Time 4 Wheel, Quadra Drive System
 
Rear output seals as well as front pinion seals are the scurge of the wj world. I don't think I've ever looked under a wj where 1 or both weren't leaking to some degree though yours seems a little excessive.Those leaks usually look way worse than they usually are. You might want to check your front yoke where it slides into the rear output for any grooves or burs in the seal area. As far as fluid that's ALL they recommend now.

Frango100 12-21-2010 07:43 PM

Re: Transfer Case Seal Leaking, Full Time 4 Wheel, Quadra Drive System
 
You could have a look at the T-case breather, to see if it is not blocked. It would in that case build up pressure when heating up and you could loose oil at the point where its most fulnerable, the shaft seals.


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