I also had the same problem on my 250 after switching to silicone brake
fluif. And my conditions were similar, the master and both calipers had
been rebuilt by Apple Hydraulics. I had also put new stainless braided
hoses on the car at all four corners (blows the aged rubber hose theory),
and also had flushed completely with alcohol (or so I thought!). After a
complete teardown and close inspection, I found evidence that enough of the
(regular) fluid used by Apple to assemble the components of the master
cylinder had reacted with the silicone causing the pistons to bind in the
master cylinder. I can't say why the brakes would 'bleed' off enough to
drive again after 30+/- minutes. However, after a through cleaning and
re-assembly (master and calipers with silicone fluif) and a liberal flushing
of the whole system with silicone, I have not had any further problems in
the 1000 some odd miles I've driven since.
Good Luck,
Dave Brackin
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net]On
Behalf Of TRDOCTOR@aol.com
Sent: Monday, June 26, 2000 7:11 AM
To: 6 Pack Digest
Subject: Locking Brakes
Listers;
I was on a drive tonight with fellow 6-Packer John Phillips when I started
experiencing locking brakes. The master cylinder is new (< 6k miles), the
system was rebuilt at the same time. I flushed the system with denatured
alcohol and converted to silicone brake fluid. There has been no trouble at
all, except for a couple of weeks ago when I backed out of the driveway
after
having the '6 on the incline of the driveway with the e-brake on. When I
hit
the bottom of the driveway the pedal went almost to the floor, but quickly
came back up after a second of frantic pumping! There was no hint of any
problem since and I drive the car on a regular basis, even in the winter.
Being in Oklahoma has it's advantages.
At first I thought it was the back brakes. We jacked the car up and pulled
the drums with no problems and there was plenty of slack in the e-brake
cable
(I carry an adjusting wrench in the trunk and had backed off of the
adjustment). Things eased up and I was able to drive to our destination
where I could feel them locking again. This time I jacked up the front and
found the fronts to be the culprit. AAA came to the rescue and when they
got there (about an hour later) the brakes were completely free. When we
got
the car off of the flatbed I was able to drive the car into the garage with
no problem.
Any suggestions?
Samuel R. Clark
Green Country Triumphs/Jaguar Enthusiast's Club of Oklahoma
VTR South Central Regional Coordinator
TS45355L O
CC82030U O
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