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Thread: Axle hum

  1. #1
    Join Date
    Apr 2017
    Location
    NC
    Posts
    19

    Default Axle hum

    I have 97 Jeep cherokee the rear axle seems like a high-pitched hum when I'm driving normally around 40 to 50 to 60 but when I'm on the highway kind of disappears. Any ideas?
    The gears look fine last time I cleaned the diffs out if that helps

    I'm hoping for a wheel berring but figured I would ask to see if anyone has any other ideas !?
    Last edited by 97reillyxj; 04-22-2017 at 08:01 AM.

  2. #2
    Join Date
    Mar 2013
    Location
    Portland
    Posts
    1,430

    Default Re: Axle hum

    My guess would be bearings.
    Not too hard to swap them out.

    I had a bearing start to go once, but didn't hear it at hey speeds - till I drove past a long section of wall and heard the echo to let me know it was
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  3. #3
    Join Date
    Aug 2009
    Location
    Asheville, NC
    Posts
    7,962

    Default Re: Axle hum

    Yeah, I'd agree that son long as the gears look good... that it'd most likely be bearings going out... And as Dave said... they're not too hard at all to change out.. get em swapped out and see if it takes care of the issue.. if nothing else you'll know you got new bearings in there
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  4. #4
    Join Date
    Mar 2013
    Location
    Portland
    Posts
    1,430

    Default Re: Axle hum

    Often, I only know I've fixed the issue...
    ...because I've replaced every possible piece.

    And then you start on the next issue
    Be strong when you are weak.
    Be brave when you are afraid.
    Be humble when you are victorious.
    But be a badass everyday!
    . . . . . . . . . . . . . . .

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