Author Topic: 1969 Z28 Camaro master cylinder  (Read 1721 times)

wisemanz28

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1969 Z28 Camaro master cylinder
« on: April 09, 2012, 10:22:24 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?

NoYenko

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Re: 1969 Z28 Camaro master cylinder
« Reply #1 on: April 10, 2012, 01:16:18 AM »
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

JohnZ

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Re: 1969 Z28 Camaro master cylinder
« Reply #2 on: April 10, 2012, 03:31:27 PM »
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.
'69 Z/28
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69Z28-RS

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Re: 1969 Z28 Camaro master cylinder
« Reply #3 on: April 10, 2012, 05:17:29 PM »
Nice setup JohnZ!    :)

Where does one find those neat little hose adapters?   or did you have to make them yourself?  :)
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

bertfam

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Re: 1969 Z28 Camaro master cylinder
« Reply #4 on: April 10, 2012, 05:32:46 PM »

Stingr69

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Re: 1969 Z28 Camaro master cylinder
« Reply #5 on: April 10, 2012, 06:52:05 PM »
I believe the bleeder screws on the original master cylinders were only used for production line purposes and never used in service.

-Mark.

JohnZ

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Re: 1969 Z28 Camaro master cylinder
« Reply #6 on: April 11, 2012, 03:46:09 PM »
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.  :)
'69 Z/28
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Stingr69

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Re: 1969 Z28 Camaro master cylinder
« Reply #7 on: April 12, 2012, 03:41:04 PM »
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.  :)
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.  :)

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