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Getting Hubs Tight On Tapered D44?

Discussion in 'Early CJ5 and CJ6 Tech' started by Buildflycrash, Sep 21, 2019.

  1. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    I installed new hubs a couple weeks ago then in the past couple days I was hearing some noise from the area. I think the nut torque should be 150lb. Then tighten or loose to the closest slot in the castle.

    So the closest slot I ended up with loose nut and noise. The next slot I can’t get to with my breaker bar and extension. The Brake is on with transmission in gear, the wheel starts spinning on other side when I tighten.

    What am I missing here?

    [​IMG]
     
  2. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Axle or hub worn? Bottoming out instead of wedging on the taper?

    Had a similar issue on '34 Ford and I just shimmed the taper cone with some .002 shim stock. But I'm funny that way.
     
  3. Keys5a

    Keys5a Sponsor

    Do you have access to a big impact wrench? I might put a drop of oil on the back side of the nut too.
    -Donny
     
  4. Glenn

    Glenn Kinda grumpy old man Staff Member

    X 2 on wear. Probably reason they were loose to begin with.
     
  5. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Did you use something like a strip of shim or cut a cone shape? Shim stock from where? I’m not familiar.
     
  6. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    The hubs are new so axle is likely the problem.
    Would the axle in my ‘64 3B be the same? I’m not planning to use that D44.
     
  7. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Replacing axles is not what I was planning on doing today.

    [​IMG]
     
  8. Glenn

    Glenn Kinda grumpy old man Staff Member

    To my knowledge all of the 44 tapered axle shafts for the CJ's are the same. Before pulling the axle out though I think I'd investigate a little deeper. Maybe start by measuring the inside diameter (at the end) of the hub) and compare that with the axle taper. It's a bit weird that at 150 lbs it's still loose but yet you can't get it to the next slot.

    Forgot to mention the spline count is either 10 or 19, both of your's are probably 19. Only one way to know for sure.
     
    Buildflycrash likes this.
  9. Glenn

    Glenn Kinda grumpy old man Staff Member

    Maybe putting the tires on so it will be on the ground (floor) and blocking it from rolling will help to get the final tightening needed.
     
    Buildflycrash likes this.
  10. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    A tapered cone. Machine shop supply, precision thin steel, from my FLAPS.

    For the record I'm not actually recommending this as a legitimate technique.
     
    Twin2 and Buildflycrash like this.
  11. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor


    Gotch Ya!
    Going for swap from spares I have first.
     
  12. NCRenII

    NCRenII yellow fever

    Another thought is to have all parts sparkly clean and polish up the mating surfaces with emery or crocus. With that try with the lube sliding faces, and then rather than shims, use emery or wet or dry to remove material from the shim/washer.
     
  13. 45es

    45es Active Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I once ran into a situation where the key would prevent the hub from seating correctly onto the axle. What was occurring was, as the hub was being installed, it would cause the key to slide to the back of the keyway and slightly up onto the taper at the back of the keyway. This prevented the hub from sliding far enough onto the axle to engage or seat correctly.
     
    Rick Whitson, PeteL and Lockman like this.
  14. TIm E

    TIm E Aggressively average

    On a tapered axle/hub, always put the key in after the hub is on. It doesn't have to be tight, just most of the way on. If the key is in the slot first, the hub will cause it to ride up the ramp and split the hub.

    Also, with the cotter pin, always torque to spec, then only tighten to the next slot for the pin (never loosen from specified torque).
     
    juffer, ITLKSEZ, Focker and 2 others like this.
  15. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    x2.
    I've learned this too.
     
  16. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    I delayed working on the 5 today. I’ll check the keys again before I start pulling axles. Thanks for the replies.
     
  17. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Didn’t have big impact but I did put a dab of anti-seize on the threads and washer. The nut before just stopped at a certain point. After lube it just kept turning and getting tighter. Went out on sandy trail ride for a couple hours after and had no issues. Thanks Donny.
     
    Rick Whitson and Glenn like this.
  18. Rick Whitson

    Rick Whitson Detroit Area 2024 Sponsor 2022 Sponsor

    Great! The thing about tapered shafts is "Clean", there cannot be anything between the tapers, they rely on contact to hold. Glad you got it fixed.
     
  19. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

  20. Glenn

    Glenn Kinda grumpy old man Staff Member

    :watch::shrug: