Front Rotor

jah65 · Post by **jah65** » 25 Jan 2004, 19:09

I replace my front brakes and rotors on my 98 S70 and the very next day I notice on the right side the rotor was all gouged up. can anyone tell me what could be the problem. that's why I had to replace them because that same side was rub down to bare metal.

nightshift · Post by **nightshift** » 25 Jan 2004, 19:32

When you say "gouged" are there actual deep scores, or scratches? I would think if anything, sounds like the caliper itself is not retracting all the way.
I would pull that side again, and make sure all the components are working freely and the caliper piston is smooth, all the way back.

ras65 · Post by **ras65** » 25 Jan 2004, 19:44

nightshift wrote:When you say "gouged" are there actual deep scores, or scratches? I would think if anything, sounds like the caliper itself is not retracting all the way.
I would pull that side again, and make sure all the components are working freely and the caliper piston is smooth, all the way back.

They are deep scores for a rotor thats just being on the car for a day. they were scores all around the rotor. How do you know when the caliper is bad? and how do you test them?

nightshift · Post by **nightshift** » 25 Jan 2004, 20:02

Ok, if you did it yourself, the piston should retract all the way when you go to re-install it. Not just back far enough to get it over the disc again, but a little further, so there is "some" room for freeplay. If it is a real tight fit getting it back on, I would think it isn't going all the way back, to release the pad between rotor and piston, causing it to just slowly grind away.
It should have a little freeplay, and be smooth when you squeeze it all the way back and out a little again. Just try and exercise it and see if it's sticking.