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Rear brake cylinder

Discussion in 'Gen 2 Prius Main Forum' started by Ernie stires, Jun 13, 2023.

  1. Ernie stires

    Ernie stires Member

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    Drivers side wheel cylinder hyper-extended again, happened before about 8 months ago. In both cases it seems that braking while in reverse may be the cause. Not sure why this would happen, all hardware is correct. Ideas?
     
    #1 Ernie stires, Jun 13, 2023
  2. mr_guy_mann

    mr_guy_mann Senior Member

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    What do you mean - "hyperextended"? Pictures of the results?

    Posted via the PriusChat mobile app.
     
    #2 mr_guy_mann, Jun 14, 2023
    Ernie stires likes this.
  3. ChapmanF

    ChapmanF Senior Member

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    I don't think that happens when all hardware is correct, so it would spur me to carefully recheck assumptions.

    One thing that can easily happen is adjusters get swapped left for right (or just one gets replaced, and isn't for the correct side). They look almost identical, but the thread directions are different. Any one that's not on the correct side of the car will auto-loosen instead of auto-adjusting.
     
    #3 ChapmanF, Jun 14, 2023
    Ernie stires and Tombukt2 like this.
  4. Ernie stires

    Ernie stires Member

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    The piston (one side) was pushed right out of the cylinder.
     
    #4 Ernie stires, Jun 15, 2023
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