Paccar TX12 Noise

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Big Road Skateboard, May 16, 2024.

  1. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Hey guys. I haven't worked on any of these, but an old customer has one with a noise in all even gears. Any thoughts or ideas I can pass along?
     
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  3. Goodysnap

    Goodysnap Road Train Member

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    Lower counter shaft bearing cups will spin in the case with age. There are updates to prevent this. If it’s still under warranty get it in before it expires. Might just get a new trans. Should have 5 yr 750.
     
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  4. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    I have passed that along. Thanks for the info
     
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  5. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    So he took that info to the dealer. Dealer test drives and says they can't hear it, no codes, run it.

    He gets ahold of Paccar CS and suddenly they have found that this race spinning has ruined the case and bell housing, and is the cause of his noise.

    They quoted him parts (new trans and bell housing) and labor at 25k$!

    Not sure what he'll do from here, but thought I'd update.

    Thanks again for the info
     
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