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While disassembling the rear for replacing the abs speed sensor I noticed a wear mark on the rear bottom of the caliper. I believe it didn't have this wear mark when I replaced the brake pads 7000 miles ago. Not sure how it would get this mark ,as everything is on a fixed point. The pad pins are in place and the pads are not even close to the mark. The rotor doesn't really look worn.
The rotor also appears to have hot spots. Im not a heavy or rear brake only rider. Always front and rear combined. Pads are ebc brand.
I’m just spitballing here, but have you had the wheel off the bike before or loosened it. That mark looks like the rotor is not centered in the caliper. Also noticing the black mark at 2 o’clock on the axle cam maybe should be at 3 o’clock?
Got the bike off the floor and checked the rotor for clearance while turning it. Took the pads out just so they wouldn't drag and make false noise. Put painters tape on the edge of the rotor in 5 different spots. No noticeable wear marks. I did notice that there is some noticeable play in the caliper mounting bolts. You could see the difference in how much it moved up or down. Maybe 2 mm per bolt of up and down movement. Maybe it needs to be mounted in the highest part of the hole. It would move upwards with rotation of the wheel when the brakes are applied anyways. Just a guess
Further inspection reveals that the right side wheel bearing is shot. All kinds of wobble and free play in it. Might explain the marks on the rotor and the abs speed sensor going bad. The sensor has wear marks also. So now the question is should I replace both or just the bad side and also what is good replacement wheel bearing
Further inspection reveals that the right side wheel bearing is shot. All kinds of wobble and free play in it. Might explain the marks on the rotor and the abs speed sensor going bad. The sensor has wear marks also. So now the question is should I replace both or just the bad side and also what is good replacement wheel bearing
That would do it, definitely replace both, can't go wrong with OEM bearings.
While disassembling the rear for replacing the abs speed sensor I noticed a wear mark on the rear bottom of the caliper. I believe it didn't have this wear mark when I replaced the brake pads 7000 miles ago. Not sure how it would get this mark ,as everything is on a fixed point. The pad pins are in place and the pads are not even close to the mark. The rotor doesn't really look worn.
The rotor also appears to have hot spots. Im not a heavy or rear brake only rider. Always front and rear combined. Pads are ebc brand.
Stack up tolerances.. Maybe the holes in the fork legs are on the large side. Don't worry be happy.
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Brake caliper issue
