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Re: What is the purpose of the little nubs on the brake pads (2003 MGM)
Hi andrew61987.
They are there to prevent the piston from rotating.
Used mainly on rear brakes with a parking brake built in, but not always. The piston is screwed onto a coarse threaded rod. As the piston moves out the threaded rod rotates and keeps the piston and pad close to the rotor. If you know what I mean!
Andy.
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