Sticky Caliper?

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  • aaron_silva
    E30 Mastermind
    • Oct 2003
    • 1785

    #1

    Sticky Caliper?

    I have been noticing that my passanger side front wheel has been dusting a lot more than all of the others. Could this be due to a sticky piston in the caliper? The arent too old (have been rebuilt recently).

    Suggestions would be great.
    Thanks

    Aaron
  • rscheiring
    E30 Enthusiast
    • Jan 2004
    • 1014

    #2
    Been bled lately? Have you removed the caliper and inspected it (check piston seal, guide pin/seal, ensured the pad carrier moves easily and the piston isn't seized)? Are the pads properly resting in the caliper (if one of the springs at the bottom of the pad is poking out, it isn't).
    A great pleasure in life is doing what people say you cannot do- Walter Gagehot

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    • nando
      Moderator
      • Nov 2003
      • 34839

      #3
      yeah that has happened to me twice. take care of it soon, or you'll be buying a new rotor. The first caliper that froze up on me I didn't notice until it ate all the way through the pad and chewed up the rotor. The second one I replaced ASAP. it's also a bit dangerous, I had a couple instances of snap oversteer because of higher braking forces being applied to one of the rear wheels compared to the rest of the wheels. Not sure if a flush will solve it, I just replaced mine (and all the lines too), but it can't hurt to flush it out first and then try to replace or repair the caliper.
      Build thread

      Bimmerlabs

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      • BavarianBimmer
        E30 Modder
        • Oct 2003
        • 951

        #4
        Just like nando said try it with a flush it costs almost nothing and can't hurt your system ;)

        1989 E30 318iS_______________________________1989 E30 325iC M-Technic I
        1997 E36 328iT
        1990 E30 325iT 24v SOLD
        1989 E30 325i 2.7i M-Technic II SOLD

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        • elemental
          Advanced Member
          • Jan 2004
          • 112

          #5
          Brake Carrier's

          If the Pad carreirs do not slide easyly (in and out) would that cause brake chatter? Allso should there be any play side to side or up and down on the Carrier Thanks



          Matt

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