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Dana 44 Flanged Axle - 30 Spline - Inner Seal Question

Discussion in 'Early CJ5 and CJ6 Tech' started by Elvislives, Mar 9, 2012.

  1. Mar 9, 2012
    Elvislives

    Elvislives Member

    College Station, TX
    Joined:
    Jan 22, 2012
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    186
    1970 CJ5 with a rear dana 44 flanged 30 spline axle.

    Disasembled/Pulled axles and found it had inner seals. Ordered new bearings and inner & outer seals but Randy's Ring & Pinion said this axle set-up did NOT require the inner seal as the bearing is lubricated by the gear oil. There's no grease fitting on this axle housing so I'm inclined to NOT replace the inner seal and let the gear oil do it's job.

    I've discussed this in a prior thread but this info from Randy's has me thinking double time. To replace the seal & pack the bearing or not???? :?
     
  2. Mar 9, 2012
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    Sep 23, 2002
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    12,529
    The factory installed the inner seals. There were reasons for that. The outer seal primarily keeps debris out and the grease in. The job of the inner seal is to keep the gear oil out of the axle bearings. These Jeeps were meant for off road use. If you get water or other debris in your gear oil it will work it's way out to the axle bearings if you do not have the inner seals. That means the axles would need to come out to repack them each time it happens. I'd put the inner seals in as the factory did.
     
  3. Mar 9, 2012
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
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    Apr 29, 2007
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    and you'll find gear oil will make it's way out to your rims and tires, quite a mess
     
  4. Mar 9, 2012
    Elvislives

    Elvislives Member

    College Station, TX
    Joined:
    Jan 22, 2012
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    186
    Thanks guys. The seal will have a home. Assuming regular bearing grease is used and pack it before it's pressed on.
     
  5. Mar 9, 2012
    80cj

    80cj Member

    Hawaii
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    Sep 1, 2003
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    554
    Not to mention the brakes.
     
  6. Mar 10, 2012
    sterlclan

    sterlclan Member 2024 Sponsor 2022 Sponsor

    exploring the...
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    yes and the cavity gets some grease as well
     
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