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Old 05-18-2009, 09:38 PM   #21
lyrikz
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Join Date: Sep 2007
Location: monroe washington
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Re: Brake problem – cant lock them up

Quote:
Originally Posted by lyrikz View Post
I deal with newer cars all day at my shop and they call them proportioning valves. And CPP calls them proportioning valves also.
http://www.classicperform.com/Store/...uck/7172PV.htm

And my technicians call them that. I just want to know if we are talking about the same thing is all? It might just be old school terms your "combination" valve. Never heard em called that. That is if we are talking about the same valve. lol.
Back on topic, what cdowns and i were talking about is the hydraulic control valve (ie combination or proportioning). On that valve there is a metering section on it that must be disabled so you can bleed the front brakes. They do make a tool for that. Part #J23709 for general motors.

Also, just so you know for 1965-1969 brake bleeding procedure is
RR, LR, RF, LF.

Now if you have a 1970-1974 the bleed procedure is.
LF, RF, LR, RR.....
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