Brad,
I'd suspect the brake lines - especially if they're original. Why your
problem should only appear after all of your other work is one of Triumph's
mysteries but, apparently, the interiors of the flexible lines can
deteriorate and swell internally which then prohibits the brake fluid to
flow back any allow the pressure to release after having applied the
brakes. There is no apparent change that can be seen on the outside,
however. I've only read about this, though, so I can't offer much more
advice.
I noticed that you replaced the fluid with DOT 5. Again, I've no direct
experience, but I have read that silicone brake fluid (which I assume DOT 5
is) can badly affect the older rubber brake components. This may be the
cause for the brake line interiors to suddenly collapse. Hopefully, others
on the list can respond with greater certainty.
Rod. '70 TR6 CC55899L
At 20:04 17-05-98 -0700, Brad Begin wrote:
>
>Hello to All!
>
>I need some thoughts on where to start looking for the cause of a
>braking problem that has recently developed on my TR-6.
>
>When I brake it takes approx. 5-6 seconds after I let my foot off the
>brake pedal before the brake hydraulics start to ease off & allow the
>wheels to turn freely again. Both front calipers are affected, not sure
>about the rear drums though.
>
>About 200 miles ago I replaced the following brake components:
>1. New Girling Master Cylinder.
>2. Rebuilt front calipers from BPNW.
>3. New rear wheel cylinders (Lockheed brand I think).
>4. New front pads, rear shoes.
>5. Flushed each brake line thoroughly with Prestone DOT 5 fluid.
>
>All seemed just fine until symptoms started yesterday. Where do I start?
>The brake servo maybe? Or is there something really simple I'm
>overlooking?!?
>
>TIA
>Brad Begin
>Marietta, GA
>74' TR-6 CF12577U
>
|