[T3] Trying to Finish My Brakes,,

["Fuhriman, Mark" <mfuhriman@fugro.com>]

I have been doing kind of a piece-meal overhaul of my brakes on my '69.  A
couple of nights ago I finished bolting the last of my replacement parts.
In all, I had replaced all of the rubber hoses, changed the rear cylinders,
and changed one of the hard lines for a rear wheel.  I went to bleed the
system, but I couldn't seem to get all the air out.  I checked my pedal
freeplay, looked around for leaks, and still could not get any pedal
pressure as I pumped.  So I thought the master cylinder had a bad seal.
Strange, I thought, because I didn't have any MC trouble before I got into
the brakes.

Tonight I changed the MC out with a rebuilt unit I had.  The replacement MC
is a factory rebuilt unit.  After the MC swap, I went to try to bleed the
system again, but, again, no pressure build-up in the pedal when I go to
pump.  Just like with the old MC.

Normally when I want to bleed the system, I start by pumping the brake pedal
several times to get pressure built up, the pedal pumps up and gets firm, I
open the bleed screws, and fluid/air gushes out.  This time, I can't get any
pressure in the pedal.  I pump and pump, but no build-up.

I looked around hard to find leaks, but I found none.  The pedal freeplay is
good.  I did open the LF bleed nipple to see if I could bleed that side, I
got little more than a trickle, and the reservoir level did not lower much.
Having had the system open all around, do I have so much air in there that I
can't pump the pedal up?  What is happening?  I *should* have pressure
build-up in the pedal when I pump, right??

-Mark Fuhriman
 '69 Fastback

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