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Brakes slam/thumping after hubs replaced.

Discussion in 'Gen 2 Prius Main Forum' started by kenoarto, May 25, 2024.

  1. kenoarto

    kenoarto Senior Member

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    Front hubs/bearings replaced by Car-x. The usual 7mph transition slip became an inreasing, very noticeable clunk/thump/slam/squeak. Cleaned rear brakes. Replace one brake line. Thump is less but stii very wrong. Ideas?
     
    #1 kenoarto, May 25, 2024
  2. mr_guy_mann

    mr_guy_mann Senior Member

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    If brake operation was "normal" before Car-x performed work, why not take it back there?

    Drive the car at 30 or so. Shift to neutral then apply the brakes. (this disables regenerative braking so you only use the hydraulic friction brakes). How do the brakes sound or feel?

    Posted via the PriusChat mobile app.
     
    #2 mr_guy_mann, May 26, 2024
  3. Mendel Leisk

    Mendel Leisk EGR Fanatic

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    Sounds coming from front, back, hard to tell? You've looked all the calipers over thoroughly?

    First thought is someone forgot (or didn't torque) one of the caliper bolts, either the ones going into the slide pins, or the mounting bracket bolts.

    Just for giggles try raising the rear and see how free the wheels spin? (see link in signature; on a phone turn it landscape to see signatures)
     
    #3 Mendel Leisk, May 26, 2024
    kenoarto likes this.
  4. kenoarto

    kenoarto Senior Member

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    Ya. Brought it back to the shop 3 times! Charged me another $270 to replace a leaking brake line that they somehow missed the first 2 times???). I know exactly what the smooth transistion release/slip at 7 mph should feel like. This is a soft thunk/bang.
     
    #4 kenoarto, May 27, 2024
  5. kenoarto

    kenoarto Senior Member

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    Sounds like rear… but not sure. Will have calipers, slide pins and bolt torque triple checked.

    Please explain"signatures".
     
    #5 kenoarto, May 27, 2024
  6. kenoarto

    kenoarto Senior Member

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    Found your signature links. Thx!
     
    #6 kenoarto, May 27, 2024
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