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Gear Noise in Mack rears

Discussion in 'Mack Forum' started by akhonaker, Dec 10, 2017.

  1. Dec 10, 2017 #1
    akhonaker

    akhonaker Bobtail Member

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    Dec 10, 2017
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    I recently bought a 93 R Mod with Mack Rears, when you are Giving it Fuel everything is fine but, when you let off the Throttle, it makes one of the Loudest "Roaring" noises I've ever heard come from a Truck! Pulled the Inspection cover off the Rear, rear, and turned the drive shaft by hand to check the Back lash and there is very little play in the Pinion but, play from there down,....any Ideas?
     
    akhonaker, Dec 10, 2017
    akhonaker, Dec 10, 2017
    #1
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  3. Dec 10, 2017 #2
    Mark Kling

    Mark Kling Technology Contributor

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    My jeep did that when the yoke and wheel bearings were going out.
     
    Mark Kling, Dec 10, 2017
    Mark Kling, Dec 10, 2017
    #2
  4. Dec 11, 2017 #3
    Jazz1

    Jazz1 Road Train Member

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    If you are lucky it’s a pinion bearing.
     
    Jazz1, Dec 11, 2017
    Jazz1, Dec 11, 2017
    #3
  5. Jan 14, 2018 #4
    rolls canardly

    rolls canardly Road Train Member

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    mt. pocono. pa.
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    find it now or you will find it in pieces. Hope you're in a warmer place.
    Right now I am getting a vibration in my driveline - and its just too cold to mess with.
    Felt for play everywhere and do not see anything.
    Hope that don't end up in pieces.
     
    rolls canardly, Jan 14, 2018
    rolls canardly, Jan 14, 2018
    #4
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