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Dana 25 Question

Discussion in 'Flat Fender Tech' started by Downs, Nov 8, 2021.

  1. Nov 8, 2021
    Downs

    Downs Kubota Orange Rattlecan

    Hunt County Texas
    Joined:
    Jul 25, 2020
    Messages:
    478
    Is there not a grease seal in the bell to keep grease from migrating down the axle tube? Or is it just the inner seal to keep 90w out of the tube and bell? Have the front axle out and was inspecting it hoping for a quick diff fluid change clean up and repaint and found the diff housing full of grease.

    There was no outer seal when I pulled the axle shaft and I'm not seeing one in the parts diagrams. So I'm guessing at this point the inner seal failed and grease migrated overtime into the diff housing.

    Thanks for any direction,
    Josh
     
  2. Nov 8, 2021
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
    Messages:
    7,351
    Just the inners.
     
    Downs likes this.
  3. Nov 8, 2021
    duffer

    duffer Rodent Power

    Bozeman, MT
    Joined:
    Sep 17, 2009
    Messages:
    3,360
    It is usually just the opposite. The diff lube ends up in the knuckles and from there, into the brakes.
     
  4. Nov 8, 2021
    Downs

    Downs Kubota Orange Rattlecan

    Hunt County Texas
    Joined:
    Jul 25, 2020
    Messages:
    478
    I'm sure there was some diff oil in the tube/knuckle but didn't see any in the brake drum. Looks like one of the previous owners rebuilt the brakes and did the bearings and seal on the hub at the same time but didn't go further than that.
     
    Ol Fogie likes this.
  5. Nov 9, 2021
    jeepdaddy2000

    jeepdaddy2000 Member

    Eagle Point oregon
    Joined:
    Jun 24, 2004
    Messages:
    623
    If you are going to replace the wiper seals on the balls, it is a good time to inspect the upper and lower king pin bearings. The uppers are usually lube starved and get dry.
     
    Ol Fogie likes this.
  6. Nov 9, 2021
    Downs

    Downs Kubota Orange Rattlecan

    Hunt County Texas
    Joined:
    Jul 25, 2020
    Messages:
    478
    Kingpin bearings look brand new, very good condition and Timken brand. I'll be reusing them.
     
  7. Nov 23, 2021
    Downs

    Downs Kubota Orange Rattlecan

    Hunt County Texas
    Joined:
    Jul 25, 2020
    Messages:
    478
    Forgot to post on here that the inner seal was actually just not there at all.
     
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