Brake/Caliper question.....how can this happen.......
08-21-2011, 10:28 AM
#41
Its gotta be the pins. Even if the caliper was bad and dragging, the pins would balance the force between the inner and outer pads. If the inboard pad is wearing and the outboard is not, the pins must not be doing the job (braking force) or something with the pad or rotor surface is not consistent from the inside to the outside (reduction of friction).
Maybe something other than the grease was binding the caliper bracket and keeping it from moving?
Maybe something other than the grease was binding the caliper bracket and keeping it from moving?
Can a worn rotor play a role? I wonder if the front rotors need to be replaced....all 4 have 160,000 miles now.
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08-23-2011, 03:23 PM
#42
If the inner rotor surface was irregular as hell it could have contributed, but I don't think in the amount of uneven wear that you saw.
There is a slight reduction in brake line pressure when you let off the brake pedal, which should cause the pistons to move back slightly. It is the pull from less pressure, plus slight push of the pads.
This may remain a mystery. If your old pins weren't jammed and the pistons weren't jammed then I think the most likely thing is a defective pad that started to disintegrate. It isn't common, but isn't unheard of either.
There is a slight reduction in brake line pressure when you let off the brake pedal, which should cause the pistons to move back slightly. It is the pull from less pressure, plus slight push of the pads.
This may remain a mystery. If your old pins weren't jammed and the pistons weren't jammed then I think the most likely thing is a defective pad that started to disintegrate. It isn't common, but isn't unheard of either.
