Ernie rote:
> We have a commercial unit that uses compressed air through a venturi to
> create the vacuum but Mi-T-Vac makes a unit that works with their hand
> vacuum pumps. Just a sealed jar with a port on one side for the pump and
> a port on the other which a hose which goes to the brake bleeder screw
> on the wheel cylinder or caliper fits on.
Well, we tried this, sort of, on my 58. I had an intractable pocket of air
at the rear wheel on the driver's side and, lordy, we tried just about
everything to get rid of it. We used the hand vacuum thingy put it was
ineffective. It was also a struggle to keep the master cylinder
sufficiently full of fluid. By this time we had swapped over to a dual pot
M/C and they were pretty easy to empty, being smaller than the original
single pot.
Once a proper pressure bleeder was found that we could use on the car, my
problems were over in, literally, minutes. The trapped air that resisted
being expelled after so much effort with the brake pedal and an
attempt with an admittedly very small vacuum pump was gone in just a moment
or two.
To be able to apply the brakes with confidence was a major moment for me and
my time with the car, as you might imagine.
Hugh
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