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Subject:Re: Aaaaargh! Brake failure (long)
From:Lawrence Johnson
Date:Mon, 17 Apr 2000 20:27:14 -0400

Late braking news:

When new brake pads are installed and the disks have neither been replaced nor
turned, it is essential that the new pads be seated. A racing car driver that I
respect, told me that his preferred method of seating pads was to bring his car
up to 100 km/h (63 mph) and then apply the brake firmly, at the threshold just
before locking up, and keep the brakes applied until the vehicle comes to a
full stop. He immediately releases the brakes so that they will not 'burn' and
the disk will cool without warping. He waits some 10 minutes or so and repeated
this exercise twice more with the same rest in between.

If the new brake pads are not seated properly, then they tend to come in
contact with the disk at just the 'high' points. This causes some very high
local heating and glazing. The next time the brakes are applied, these glazed
points meet and you get reduced braking. This might be what happened here.

Dem da brakes,
-Larry

harald_nancy wrote:

> Maybe your brakes fade and glaze, because of leaking brake fluid,
> or oil or grease contaminating the rotors or pads, since it appears you
> replaced everything, and the brakes should be in top notch shape.
> Maybe something is still leaking somewhere.
> <snip>