In a message dated 2/16/00 5:58:53 PM US Eastern Standard Time,
tpdwinch@yahoo.com writes:
<< I do have a question that came to mind while reading
about silicone and air bubbles. Even in a closed
system, also a shaken bottle on the shelve, if a car
encounters a rough road the fluid in the master
cylinder could produce air bubbles. If these get in
the lines won't these cause a continued problem of
trying to get them out? >>
Hi,
I would say that anything is possible, but I'd wager that if bubbles do form
in the master cylinder portion from road bumps, they'd stay suspended toward
the top of the reservoir. I think the bubbles that cause most of the
problems are the one's that are further into the system that have nowhere to
escape to unless they get bled out of the system. That's why it's usually a
good idea to bleed the brakes every so often if you feel that you might have
this problem. The bubbles that are in the system need to be purged out, and
they should eventually work their way out.
I normally use a Ball jar filled half way with clean brake fluid, then a
piece of vinyl tubing pushed tightly over the bleeder, and the other end "in"
the brake fluid. When you bleed the system, you can typically see the
bubbles coming out into the fluid in the ball jar. Of course don't let the
MC run dry while doing so.
Scott Helms
'76 TR6
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