CRG Discussion Forum

Camaro Research Group Discussion => General Discussion => Topic started by: wisemanz28 on April 09, 2012, 10:22:24 PM

Title: 1969 Z28 Camaro master cylinder
Post by: wisemanz28 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?

Title: Re: 1969 Z28 Camaro master cylinder
Post by: NoYenko 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

Title: Re: 1969 Z28 Camaro master cylinder
Post by: JohnZ 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.

Title: Re: 1969 Z28 Camaro master cylinder
Post by: 69Z28-RS 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?  :)

Title: Re: 1969 Z28 Camaro master cylinder
Post by: bertfam on April 10, 2012, 05:32:46 PM

UNIVERSAL BLEEDER (http://www.ebay.com/itm/Dorman-Help-Master-Cylinder-Bleeder-Kit-13910-/230764129487?hash=item35ba9d2ccf&item=230764129487&pt=Motors_Automotive_Tools&vxp=mtr)

Ed

Title: Re: 1969 Z28 Camaro master cylinder
Post by: Stingr69 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.

Title: Re: 1969 Z28 Camaro master cylinder
Post by: JohnZ on April 11, 2012, 03:46:09 PM

Quote from: Stingr69 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.

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.  :)

Title: Re: 1969 Z28 Camaro master cylinder
Post by: Stingr69 on April 12, 2012, 03:41:04 PM

Quote from: JohnZ on April 11, 2012, 03:46:09 PM

Quote from: Stingr69 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.

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.  :)

Quote from: JohnZ on April 11, 2012, 03:46:09 PM

Quote from: Stingr69 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.

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.