Pressurized Brake Bleeder for 1951 200
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Can anyone give me a link to a pressurized brake bleeder for my 1951 200?
Posted on: 2019/7/10 19:00
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Re: Pressurized Brake Bleeder for 1951 200
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If there is a check valve, how does the pressure release when the pedal is released?
Posted on: 2019/7/10 21:25
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Re: Pressurized Brake Bleeder for 1951 200
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It is spring loaded to provide a low ( 5-7 psi) residual pressure in the lines when the pedal is released. Disc brake cars don't usually have this, though the above procedure works well for for them also if the master has been bench bled.
Posted on: 2019/7/11 6:16
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Re: Pressurized Brake Bleeder for 1951 200
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I haven't been able to get the brakes to harden-up correctly. I installed a new master cylinder, wheel cylinders, brake lines and brake hoses. It seems to harden up but its right at the floor. I've had my son call-out when to open/close when he's pumping. I'm about to disconnect all brake lines, plug them with inverted flare plugs and see how the master acts alone. I'll then add back individual wheels and test the master with that wheel only, 4 times.
Posted on: 2019/7/11 9:48
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Re: Pressurized Brake Bleeder for 1951 200
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If you have the Packard master or a suitable single piston replacement I haven't heard of any significant bleed issues but I did have a heck of a time bleeding a system using a dual master during one of my experiments with a modern booster setup. Had to remove that master cyl and pre-bleed it on the bench along with some manipulation to get a trapped air bubble to move where it could be expelled. I suppose it is possible a single piston unit could have a similar problem.
Posted on: 2019/7/11 11:28
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Howard
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Re: Pressurized Brake Bleeder for 1951 200
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I have a simple pressure bleeder that uses spare tire pressure as the pressure source. I made my own pressure bleeder cap from an old mc cap. Weld the vents closed and drill a hole for the hose from your pressure bleeder. There you go.
Posted on: 2019/7/11 14:22
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1953 Clipper Delux Club Sedan, 1953 Caribbean, 1969 912, 1990 Miata
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Re: Pressurized Brake Bleeder for 1951 200
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I shouldn't have thrown out the old MC including the cap.
Posted on: 2019/7/11 18:14
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Re: Pressurized Brake Bleeder for 1951 200
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I started the procedure I described and found that the right front brake let the pedal go past the floor. I took off the drum and inspected everything. It was OK but the star adjustment was bottomed-out. I put the drum back on and saw that the drum/shoe clearance was about 3/16". I adjusted the star and cam to spec. The pedal goes about 40% of the way down and is hard as a rock.
I need to hook-up the rear brakes and adjust the hand brake. I should be driving by tomorrow or NLT Saturday.
Posted on: 2019/7/11 18:31
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Re: Pressurized Brake Bleeder for 1951 200
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Congrats on finding the problem! There is an upper adjustment on each brake drum that you can adjust too.
Posted on: 2019/7/12 6:05
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1953 Clipper Delux Club Sedan, 1953 Caribbean, 1969 912, 1990 Miata
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