Hi Ben,
One thing which can cause the problem that you have encountered is a lack of
free play in the master cylinder push rod.
When the master cylinder is assembled and installed correctly if you fill
the reservoir with fluid, and open all or any bleed screws, fluid should
eventually start to dribble out of the open bleed screw. This is one of the
best ways to bleed brakes, if you have the time, because it completely
eliminates aeration of the fluid.
Check that push rod. If you do not have clearance and you do eventually
manage to bleed the system somehow the brakes will eventually lock on as a
result of fluid expansion.
Michael Salter
www.precisionsportscar.com
-----Original Message-----
From: owner-healeys@Autox.Team.Net [mailto:owner-healeys@Autox.Team.Net] On
Behalf Of Ben Prince
Sent: Saturday, January 15, 2005 4:43 PM
To: Healeys
Subject: Brakes
I just replaced the wheel cylinders and brake hoses on my BN1. I also
rebuilt
the master cylinder.
With everything reassembled, I can't get any fluid into the system. I have
pumped on the pedal with a bleed plug loose, but to no avail. I hooked up a
suction device at a wheel cylinder and created 20 psi vacuum, but it doesn't
draw any fluid either.
Perhaps I screwed up the master cylinder rebuild, but I don't think so. I
did, however, neglect to bench bled the master cylinder before I installed
it,
but it seems that would not be insurmountable. Any suggestions on how to
get
fluid into the system and bleed it? Is there a cap adapter so one can
pressurize the fluid reservoir?
Many thanks,
Ben
54 BN1
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