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  • 4WD acting up

    Update on old post

    I lifted the truck off the ground
    the front drive shaft is turning and the left Axel
    The right Axel is not turning
    do I need to replase the front end

    hubs unlocked no grinding
    locked hubs and get a lot of grinding
    that feels like it's comming from the transfer case
    Last edited by SixFtUnd; 02-09-2008, 09:36 PM.
    86 Ford Bronco

  • #2
    If the front end is not locked and diff. is open one tire will spin and the other will not. Sounds like the chain in the case.
    sigpic

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    • #3
      but the front drive shaft is turning if it wasn't ingaging in the case I wouldn't get anything in the front
      86 Ford Bronco

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      • #4
        Are you spinning it by hand, or do you have all of the tires off the ground and putting the trans in gear and spinning the tires that way.

        Assuming the front diff is open, it would be pretty normal for the driveshaft to spin and only one of the front tires to spin. To do some more checks on the front axle:
        - put t-case in 2wd
        - have both front tires off the ground
        - have the hubs locked in
        - spin driveshaft by hand - one or both front tires should spin
        - spin one of the front tires by hand, one of the below will happen
        - if open diff
        the other front tire will spin the opposite way
        the driveshaft will spin, opposite tire will not
        - if limited slip/posi
        the other front tire will spin in same direction
        AND the driveshaft will spin

        Also take a look at the u-joints in the front axle shafts (look through the knuckle) and make sure they are not loose.

        After that look at the u-joints in the front and rear driveshafts for any play.

        If the noise seems to be in the t-case, then it could be the chain. If it's loose or worn it can still engage the front tires, but make noise. Though I commonly see shifter problems also causing a grinding noise...shifter is out of adjustment and therefore not full engaging the gears in the t-case and causing the grinding.

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        • #5
          I got the hole truck off the ground and was able to get out with it running
          I think the nose is comming from the hubs now

          thanks
          86 Ford Bronco

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