From gtsbiker@ix.netcom.com Thu Feb 13 23:25:35 1997
Date: Thu, 13 Feb 1997 23:06:05 -0800
From: Robert Taylor <gtsbiker@ix.netcom.com>
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To: ei3666@cnsvax.albany.edu
CC: GTS-1000@MBnet.MB.CA
Subject: Re: rear brake
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Eric Isselhardt wrote:
> 
> I have had a rear brake problem since the beginning with my bike.
> Specifically, there is an air leak somewhere in the system and after
> a few hundred miles I lose the brake completely.  My dealer has
> replaced the slave cylinder seals with a rebuild kit.  This helped a
> little, but did not cure the problem.  Next, we will probably have to
> rebuild the master cylinder.  We'll see.
> 
> Part of the problem is that I only use the rear brake to hold on
> hills or to stop REALLY hard, so the problem develops without my
> being aware of it until I need the brake.  After the rebuild, I had
> been using the rear a little more just to check the works.  But the
> mechanic forgot to reset the ABS so the activation is a little
> abrupt.  Since it was the end of the season, I haven't had a chance
> to reset them myself yet.
> 
> Maybe I should just remove the entire system, including the attendant
> plumbing, and save some weight!
> 
> Eric.


     I had the same type of problem that lasted for about a year until i
figured out a cure once and for all! Somehow, someway air has gotten
into
the hydraulic unit for the abs system and regular brake bleeding helps
for a short time but gradual brake pedal loss always occurs after a
time.
If you take off the right side cover you can see the hydraulic unit as
shown on page III-8 of the ABS supplemental in the GTS shop manual. You
will also note a hex head "plug" in the side of the unit. If you loosen
this plug & bleed the rear brake through this plug it will get rid of
the stuck air in the system! It took me a while to figure this all out
but I haven't had a single problem with the brakes since.
Bob Taylor,gtsbiker