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Author Topic: 1969 Z28 Camaro master cylinder  (Read 1118 times)
wisemanz28
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« on: April 09, 2012, 05:22:24 PM »

I have my orginal master cylinder thats off my 1969 camaro Z28. What is the proper procedure for bench bleeding this master cylinder with bleeder screws?
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NoYenko
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« Reply #1 on: April 09, 2012, 08:16:18 PM »

The way I bench bleed the master is with 2 old cut off brake lines with hoses attached going back into a full master reservoir. You can see the air pumped out of the hoses as you depress the piston several times. Then you mount the master on the car and flush & bleed the system go back and open the master bleeder screws for any residual air.  George
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JohnZ
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« Reply #2 on: April 10, 2012, 10:31:27 AM »

Here's a photo of the bench-bleed setup I use on my '67 Corvette master cylinder. Forget the bleeders on the master cylinder - just use the setup as shown and stroke the piston until the fluid runs free of air bubbles.
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'69 Z/28
Fathom Green
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69Z28-RS
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« Reply #3 on: April 10, 2012, 12:17:29 PM »

Nice setup JohnZ!    Smiley

Where does one find those neat little hose adapters?   or did you have to make them yourself?  Smiley
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Gary W.  /  69Z28-RS, 72 B 720 cowl console rosewood all tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe (2), 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55 Nomad, '57 Nomad, '57 B/A Sedan
Ed Bertrand
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« Reply #4 on: April 10, 2012, 12:32:46 PM »

UNIVERSAL BLEEDER

Ed
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Ed Bertrand
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Stingr69
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« Reply #5 on: April 10, 2012, 01:52:05 PM »

I believe the bleeder screws on the original master cylinders were only used for production line purposes and never used in service.

-Mark.
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JohnZ
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« Reply #6 on: April 11, 2012, 10:46:09 AM »

I believe the bleeder screws on the original master cylinders were only used for production line purposes and never used in service.

-Mark.

We didn't use them in production, and we didn't use the bleeders at the calipers and wheel cylinders either; we evacuated and filled the brake system through the little compensating port in the bottom of the master cylinder reservoir.  Smiley
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'69 Z/28
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Stingr69
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« Reply #7 on: April 12, 2012, 10:41:04 AM »

I believe the bleeder screws on the original master cylinders were only used for production line purposes and never used in service.

-Mark.

We didn't use them in production, and we didn't use the bleeders at the calipers and wheel cylinders either; we evacuated and filled the brake system through the little compensating port in the bottom of the master cylinder reservoir.  Smiley
I believe the bleeder screws on the original master cylinders were only used for production line purposes and never used in service.

-Mark.

We didn't use them in production, and we didn't use the bleeders at the calipers and wheel cylinders either; we evacuated and filled the brake system through the little compensating port in the bottom of the master cylinder reservoir.  Smiley

Thanks for the correction John.  I am sure you are right.
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