Thanks for reminding me of glazing and explaining it well.
That is what I really really like about this list. Good advice from
inteligent thinking people. In fact it's the only list I'm on.
I learn a lot here !
--- In
DSN_KLR650@yahoogroups.com, "April Neave & Norm Keller"
wrote:
>
>
> If you don't have a small stone or the like jammed between the
calliper and
> rotor, it is most likely that you have glazing of the pads and
rotor.
>
> This is a common problem when some sort of material such as dust,
mud, etc.
> becomes cooked to the brake lining and disk rotor. The change in
the surface
> composition of the lining and rotor provides an interaction which
makes
> audible sound rather than sound which is in the in-audible range as
the
> designers intended.
>
> Several solutions:
> 1) Ignore the sound.
> 2) Hose the rotor and calliper with water then ride gently to
attempt to
> remove/change the coating. Repeat.
> 3) Remove the calliper and sand the rotor and pad surfaces with 200
grit or
> so sand paper to remove the glaze.
>
> DO NOT USE EMERY PAPER OR CARBORUNDUM TYPE PAPER!
>
> It is important not to use harder abrasives which are likely to
imbed into
> the lining and eat the rotor! Wet sanding is even better than dry.
In either
> case use a swirl pattern rather than sanding straight across or
axially.
>
> 4) Above then, apply an anti-squeal material to the pad and calliper
> surfaces and/or apply a surface preparation such a BG to the lining
surface.
> DO NOT CONFUSE THE LINING SURFACE PREPARATION WITH THE ANTI-SQUEAL
MATERIAL
> INTENDED TO GO BETWEEN THE CALLIPER AND THE PAD'S STEEL BACKING!!!
>
> HIH, if you need more or if this isn't clear please advise.
>
> Norm