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Thread: Rear End Leak from Pinion Seal/Driveshaft Side Easy Fix

  1. #1
    Moderator only5.0s's Avatar
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    Jan 2010
    New England
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    Rear End Leak from Pinion Seal/Driveshaft Side Easy Fix

    Explore Kenny Brown Performance today!!
    So I noticed gear fluid leaking from the rear end of my Fox about a week ago. I figured the Pinion Seal let go as it was leaking near the U-joints.

    I called my friend's shop and asked them to order me a Pinion Seal so I could fix it by Ford Fest next weekend. The "old man" told me to check and see if I can tighten the Pinion Nut and see if that stops the leak.

    So...I jack up the car, remove the driveshaft (12mm wrench for those bolts), inspect the Pinion Seal and it looks dry. I grab the 1 1/16 socket and I get about 1/10 of a turn out of it.(you need some tool or long screwdriver to hold the pinion flange while you tighten the nut)

    Took it out for a rip last Thurs and then it sat all weekend as I was away.

    ..Result no more rear end Leak...
    Last edited by only5.0s; 08-01-2011 at 09:54 PM.
    1984 T Top Coupe-Coyote 5.0, 4R70W, Modified BBK Long Tubes, 3.73s

    *Formerly only90s, but all the 90s are gone..

  2. #2
    Smokin 1500HP - Member TorchRedSVT's Avatar
    Join Date
    Jan 2010
    Chelmsford, MA
    the easy fixes are always the best ones!!!
    --- Ian ---
    2003 SVT Cobra 10th Anniversary Edition -- The Show Car
    1989 LX Vert -- The Cruiser - Sold But Never Forgotten
    2010 GMC Terrain -- The Daily

  3. #3
    Home of the SmokinStangs - Northeast Mustang Rally!
    Good info to know Mark Thanks, just in case it happens to mine.


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