Quote:
Originally Posted by engatwork
Can't speak for whether he got air out or not but the way to seat the new pads to the rotors is to get up to around 40 and then get on the brakes down to around 10 mph, speed up and do it again about two or three times. Then get up to 60 and bring it down to 10 braking harder each time. Do this about 10 - 15 times. This should seat the pads in.
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Of course that's assuming he has clean rotors, if they are glazed that may not help much, if at all.
OP, you don't need too much. Just raise and safely support the car one wheel at a time (for whichever ones you replaced). You can use a sanding block on the front side (a power sander is likely to make things worse as you might end up with an uneven surface)...all you want to do is remove the "sheen" from the rotor and leave it looking scuffed-up. Work in a small circular motion. The inside of the rotor is tougher because of the shield, but the gap should be big enough you could wrap the emery cloth around a phillips screwdriver shaft and use that to reach in and rough things up. Work on one area, then rotate the rotor a little. It will take you lots longer that way, but it will work. It will be easier if you remove the pads, since you can reach in to the back with your hand then, but I leave that to you to determine.
I can't judge the wear grooves on your rotor over the net, of course, but if they are significant then after knocking off the glaze, I'd probably then just drive normally (but easy on the brakes) rather than trying to bed them in through a normal procedure which is really aimed at new pads with new rotors.
As with anything else, judge for yourself what you most want to do.
Good luck.