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Technical Ford 9" Axle Seal Replacment

Discussion in 'Traditional Hot Rods' started by Auslander, Mar 7, 2016.

  1. Auslander
    Joined: Apr 1, 2015
    Posts: 73

    from Austin, TX

    So rear end starts leaking on the drivers side rear. So I pull the half shafts, remove the old seals, drift in new seals, clean everything up, repack bearings, and button it all back up. Anything else I should/should have done? Differential was full to the level of the axle tubes and bearings seem solid. Any need to drain and refill the differential? Thanks! IMG_1913.JPG IMG_1914.JPG IMG_1915.JPG
  2. Drain and refill is worth the effort IF you have 50,000 miles on the axle since the last change/rebuild. Otherwise, how often have you changed your daily?

    Then be sure to apply gasket seal to both sides of the backing plate to keep the oil in.
    Auslander likes this.
  3. oj
    Joined: Jul 27, 2008
    Posts: 6,263


    Check the axle tube vent, if its' plugged that could cause the original leak.
    Auslander likes this.
  4. Marty Strode
    Joined: Apr 28, 2011
    Posts: 6,018

    Marty Strode

    Make sure the vent is not plugged or restricted.

    PS, I see my pal OJ beat me by a minute !
    oj and Auslander like this.

  5. seb fontana
    Joined: Sep 1, 2005
    Posts: 7,081

    seb fontana
    from ct

    Repacked the bearing? How?
  6. Make sure you put grease on the axle where the seal rides so that when you first start out it does not run on a dry axle!!
  7. 302GMC
    Joined: Dec 15, 2005
    Posts: 6,926

    from Idaho

    No emergency brake ? Pull the extra parts hooked to the trailing shoe ...
    and I'm wondering how you repack a sealed rear wheel bearing ..
  8. aaggie
    Joined: Nov 21, 2009
    Posts: 2,531


    Interested to know what you are using for a parking brake. Texas inspection requires it.
  9. LOL he has a door in the floor and he puts his feet down. :D
  10. How is the axle bearing? I'll call it the leading cause of a seal gone bad.
  11. Jibs
    Joined: May 19, 2006
    Posts: 1,616


    X3, how did you pack the bearing?
  12. Fast Bill
    Joined: Jan 2, 2011
    Posts: 40

    Fast Bill

    Surprised no one noticed that the backing plate is on the wrong side. The one in the pic is for the left side and it's on the right side. Short shoe goes in front, parking brake lever should be to the rear.
  13. Fast Bill
    Joined: Jan 2, 2011
    Posts: 40

    Fast Bill

    Oops, I guess he did both sides. Disregard

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