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Possible replacing Alternator pulley without taking out the alternator?

Discussion in '2nd Gen Tundras (2007-2013)' started by Emire221, Dec 13, 2022.

  1. Dec 13, 2022 at 5:38 PM
    #1
    Emire221

    Emire221 [OP] New Member

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    Seems like the alternator pulley is seizing and chewing up my belt. I replaced the tensioner assembly and installed a new belt hoping that was the issue, however once started with new belt and tensioner you can smell rubber and see smoke coming out of the alternator pulley and rubber shavings on it. Just trying to not replace the whole alternator because I see Toyota sells the pulley by itself. It did spin by hand when I had the belt off.
     
  2. Dec 13, 2022 at 8:00 PM
    #2
    blackdemon_tt

    blackdemon_tt Battery Slayer

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    damn, I don't think you have the space for it... If you're doing the radiator, yes, or pulling the alternator... Verify other pulleys
     
    Emire221[OP] likes this.
  3. Dec 13, 2022 at 9:35 PM
    #3
    landphil

    landphil Fish are food, not friends!

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    The pulley itself won’t be the cause of seizing - that would be the alternator armature bearings causing that. The pulley does not have it’s own bearing(s), but instead it drives the alternator armature that is supported by the 2 bearings.

    With the belt removed, try spinning the alternator while pushing the pulley it the direction that the belt pulls it, I expect it won’t spin so freely.

    OR, the belt is slipping on the alternator pulley because of incorrect belt routing or tension.
     
  4. Dec 14, 2022 at 11:12 AM
    #4
    Emire221

    Emire221 [OP] New Member

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    Thanks for the information I took the belt off again and the pulley is definitely seized not turning I was trying to avoid replacing the alternator but that is the only solution.
     
    2mchfun likes this.

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