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Rear end clunking on turns

Transmission and Drivetrain

  1. Cudakiller70

    Cudakiller70 Well-Known Member

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    618A0F42-2FBA-4357-AC75-6F6DE628802E.jpeg 3:23 gear, 742 case, Rebuilt, clutch type sure grip
    I’ve added more friction modifiers, done figure 8’s but noise isn’t going away. Can turn pinion and axle flange by hand easily, It’s smooth and no noise. BUT CANNOT turn one wheel while holding the other. Pulled third member see nothing obvious only a couple of heat marks. Not sure what they mean. See photo. This third member sat for about 3-4 years after installation. Haven’t done this before, but I’ll try an take it apart and reassemble. Something is too tight?
     
  2. 704406

    704406 Well-Known Member

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    If you take it apart, an old time trick I used to use was soaking the clutch plates in a pan, in a mixture of gear oil and friction modifier before assembling the clutches it the case. It's critical that the beveled clutch plates and the steel spacers are installed the correct way as well. A service manual would come in handy.
    With a sure grip you likely can't turn one wheel while holding the other by hand.
    The sure grip case half bolts are LEFT hand thread, I believe, don't break them.
    How was the axle end play when you took it apart?
     
    Last edited: Jul 29, 2020 at 10:30 PM
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  3. Cudakiller70

    Cudakiller70 Well-Known Member

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    Thanks for the rebuild info that helps.
    And the left hand bolts, no doubt I would have broken them!
    No axle play using green bearings.
     
  4. 704406

    704406 Well-Known Member

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    I'm mistaken about the case half bolts being left hand, it's the ring gear bolts that are left hand thread.
    Sorry, my memory isn't what it once was.
     
  5. Cudakiller70

    Cudakiller70 Well-Known Member

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    Ok got it ! Thanks
     
  6. john-9

    john-9 Member

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    case half bolts on an original CHRYSLER POWER LOCK (clutch type)like the one shown in the picture are --- LEFT hand thread same as the ring gear bolts --- aftermarket power locks are right hand thread.
     
  7. Cudakiller70

    Cudakiller70 Well-Known Member

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    Thanks for the info, disassembly today.
     
  8. moparleo

    moparleo Well-Known Member

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    The heat marks are just showing areas that were induction hardened after machining to strengthen that area.
    Did you do the rebuild and set-up yourself or was it done for you.
    True, "Green Bearings" have no end play, also not really designed for side loading like the original taper/roller bearing set-up. Tapered bearing still used on all trucks and HD applications because of their strength. Did you do a disc conversion that required "Green Bearings" or did yours come that way used ?
    Moparts on the Web - Main Index
     
    Last edited: Aug 1, 2020 at 3:48 PM
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  9. Cudakiller70

    Cudakiller70 Well-Known Member

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    Good to know on the heat marks.
    Rebuild was done by others, it’s been awhile since I bought it maybe as long as 5 years. IIRC it was supposed to of been rebuilt.
    Good video on the sure grip. Thank you
    Just took it apart clutch discs don’t look good.

    8DA6ABBD-D82E-44EF-B51C-E22358BECA8E.jpeg

    B916B1B0-67F6-474B-BF11-9CB5E124D960.jpeg

    774AF327-D67E-4E26-92CB-FC3779201A89.jpeg
     
  10. moparleo

    moparleo Well-Known Member

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    Did you also click on the Moparts on the Web link right above the video ? Gives more good info.
     
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