Screeching Brakes!

William,

Just out of curiosity, did you bed the brake pads when they were changed? By guess is, probably not. You may have glazing on the pads. Most of the squealing if probably coming from the front brakes, since that is where most of the stopping force is. Front pads on a Ser. III are easy to remove, and if glazed can be cleaned up on a flat surface with some emery cloth (lay the emery cloth on a flat surface and rub the pad surface on it). Once you have removed the glazing, reinstall them and follow a bedding procedure to transfer pad material to the rotors. Most often, this will cure the squealing and prevent it from coming back.

If it persists, you might want to switch to a different pad, as some of the materials are more prone to squealing than others. Also, virtually all auto parts stores sell "anti-squeal" dressing that you can put on the back of the pads (on the metal backing plate, between the pads and the calipers, NOT on the stopping surface). These help, but are not a substitute for deglazing and properly bedding the pads.

In case you don't know how to bed the brakes, here is a good, basic procedure:

www.zeckhausen.com/bedding_in_brakes.htm

Best of luck.

Steve Weinstein, JTC-NJ
'70 XKE FHC; '69 XKE OTS

BTW, be careful when removing the pads. When you push the pistons back in the calipers, it will force the brake fluid in the reservoirs to overflow. And brake fluid eats paint. Be sure to use a "turkey baster" to remove some of the fluid before you start playing with the pads, and put plenty of rags under the reservoirs, just in case.