Brake stuff

[dave lowry]

New shoes are on, new pads will be on as soon as we can get the GD front
wheels off, new front bogey wheel cylinders and fresh fluid are next. Just
a couple more questions:

How much brake fluid will we need to completely purge the system? I think 4
pts should be plenty, but can't find confirmation in any of my books. BTW,
we'll be using either Ford C6AZ-19542-AB or Performance Friction #8134 .

Also, we're putting on the 1 1/8" wheel cylinders on the front bogeys but
not sure about part numbers. I have Wagner #F79767, Bendix #33709, or EIS
#EW79767. Is their a GM part number for these cylinders?

Remember, good answers just might keep us from ramming the back end of your
coach. ;-)

___________
Dave (& Dege), '76 Royale /_][__] [_] | "SR JAMES"
Santa Barbara, CA *-0------OO--* (our hobby)

 

[thomas g. warner]

You have the same part numbers that I have.

>New shoes are on, new pads will be on as soon as we can get the GD front
>wheels off, new front bogey wheel cylinders and fresh fluid are next. Just
>a couple more questions:
>
>How much brake fluid will we need to completely purge the system? I think 4
>pts should be plenty, but can't find confirmation in any of my books. BTW,
>we'll be using either Ford C6AZ-19542-AB or Performance Friction #8134 .
>
>Also, we're putting on the 1 1/8" wheel cylinders on the front bogeys but
>not sure about part numbers. I have Wagner #F79767, Bendix #33709, or EIS
>#EW79767. Is their a GM part number for these cylinders?
>
>Remember, good answers just might keep us from ramming the back end of your
>coach. ;-)
>
>
> ___________
>Dave (& Dege), '76 Royale /_][__] [_] | "SR JAMES"
> Santa Barbara, CA *-0------OO--* (our hobby)
>
>
>
>
Tom & Marg Warner
Vernon Center NY
1976 palmbeach
"The beautiful Mohawk Vally"

 

[patrick flowers]

>
> How much brake fluid will we need to completely purge the system? I think 4
> pts should be plenty, but can't find confirmation in any of my books. BTW,
> we'll be using either Ford C6AZ-19542-AB or Performance Friction #8134 .

Dave,

My book says two quarts to purge. If you haven't replaced the master
cylinder or "broken" any hard lines, then you might get by with just
two. I used almost four(as in one U.S. gallon) in getting all the air
out of my entirely new brake system, although some of that could have
been avoided(I still say pressure bleeding is the best way if you have
access to the equipment).

I found that Ford "Hi Performance" fluid was less expensive than
Autozone's price on Performance Friction and it's the same stuff(even
the can is the same, just a different label). I used the new
"synthetic" stuff from Valvoline, because I knew I was going to use a
lot of it to purge my new system and Autozone has it in quarts for about
the same price as a pint of the Ford/PF stuff. The Valvoline's dry
BP(513degF) is slightly lower than Ford/PF(550degF), but the wet BP is
higher(333degF vs 284degF). In practice, I don't know if there's much
difference in performance - if you get your brakes hot enough to boil
the Valvoline fluid, you're already in big trouble(500degF is where
steel begins to lose structural integrity).

Patrick
- --
Patrick Flowers
Mailtoatrick

The GMC Motorhome Page
http://www.gmcmotorhome.com

 

[scott shean]

Dave, I recently changed my master cyl and the rear brake hoses. This
necessitated a complete brake system bleed. The master cyl took only a pint
(mostly for the reservoirs), and the complete job took at least another five
or six pints. By the way, there has been much discussion on the GMCnet
about bleeding brakes. I used a NAPA "bleeder" that included a short hose,
a bottle, and a magnet, that allowed the bottle to be held above the brake
bleeding connection during the process.

Good luck.

Scott Shean
78 Royale
Baton Rouge, LA