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Installed locking diff but it’s not locking!!!

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by JamesMc84, Dec 15, 2020.

  1. Dec 15, 2020 #1
    JamesMc84

    JamesMc84 Bobtail Member

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    installed a locking diff in the rear drive axle, seemed to work before I installed. Put air to it. Sucked in the forks on passenger side. Had to installed it hooked fox air to clear housing. Now it’s in the truck when I put air to it I can’t hear any movement? And it’s definitely not locking the wheels.

    What could be wrong?
     
    JamesMc84, Dec 15, 2020
    JamesMc84, Dec 15, 2020
    #1
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  3. Dec 15, 2020 #2
    Milr72

    Milr72 Medium Load Member

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    ????????
     
    Milr72, Dec 15, 2020
    Milr72, Dec 15, 2020
    #2
  4. Dec 15, 2020 #3
    lester

    lester Midwest's #1 Feed Hauler

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    Not that it would help with it not locking but did you have to cut any clearance out of the housing? On my eaton 404s I had to cut a notch to get it to fit and it wouldn't have had room to unlock without it
     
    lester, Dec 15, 2020
    lester, Dec 15, 2020
    #3
    pushbroom and AModelCat Thank this.
  5. Dec 15, 2020 #4
    AModelCat

    AModelCat Road Train Member

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    Used the proper axle with the longer splines?

    Collar didn't fall out on you? Supposed to install the carrier with the locker engaged.
     
    AModelCat, Dec 15, 2020
    AModelCat, Dec 15, 2020
    #4
    lester Thanks this.
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