Brake problem – cant lock them up

[lyrikz]

Originally Posted by cdowns

little bit of smartass but if you read the service manual you'd know what a combination valve is and it's full function is //you WRONGLY call it a proportioning valve

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.

[cdowns]

Originally Posted by lyrikz

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.

chiltons motors haynes and GM service manuals all call them combination valves //reading service manuals is very old school

[lyrikz]

Originally Posted by cdowns

chiltons motors haynes and GM service manuals all call them combination valves //reading service manuals is very old school

I dont really care what its called, you could call it a boombom clang valve for all i care. I just wanted to make sure there wasnt something i was missing.

That is old school. Now its all on the net..

I can honestly say that i did NOT disable the metering valve like they say. My brakes bled fine and are rock solid. I also went with the old school way of doing the brake that is the furthest away first. From what it says in the vintage manual, in a 70-74 its completely different....

[lyrikz]

Originally Posted by lyrikz

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.....