change the rubber brake lines.
they are flexing?
ron
On Mon, Oct 22, 2012 at 7:15 PM, <fiat500f@aol.com> wrote:
> UGH! A cliff...is what I need to push this thing over.
>
> Early BN4.
>
> First, thanks to all for the many brake bleeding/air removal suggestions.
>
> Today, I bled them again, and...no joy. I took the drums off and checked that
> the shoes were radiused to the drums, which they are. All six wheel cylinders
> in the car are new and correct. The shoes are new also. The drums have been
> cut very slightly, they are not oversized. The master cylinder is rebuilt,
> correctly, and has a perfect bore. It is a 3/4" diameter cylinder and is
> correct. First, I bled the brakes the traditional way, master cylinder to
> wheels, with a helper pushing the pedal, and me opening and closing the valves
> at the cylinders. The rears went well, no air at all after bleeding. The
> fronts are pure evil. I bled them master to wheel, then reverse bled them
> wheel to master. I STILL have a pedal that I need to press 1 1/2 times to
> achieve a solid pedal. When I hold the pedal there, it does not sink, it is
> firm and stays firm. But that first press of the pedal goes to the floor. I
> can tell that I am moving fluid, and if I spin a wheel by hand, and have the
> helper step on the pedal, the wheel stops instantly. I then did the clamping
> off of brake hoses thing. When I clamped the rear hose, there was a very
> slight improvement at the pedal, but not much. When I clamped one of the
> front wheels, I then had a pedal that got firm with 1/2 of a push. Same with
> the other front wheel, so, I'm thinking the problem lies at the front wheels.
> But, I've bled AND reverse bled them! I don't know what else to do, though it
> certainly seems that there is still air in the system. How that is even
> possible, I don't know. I have no leaks at any of the lines or hose fittings.
> But I've now bled through six pints of brake fluid and it seems pretty much
> the same as it was when I started. Anyone have any other thoughts?
>
> Thanks,
> Paul B.
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