Disc Brake Metering Valve for 1969 Cadillac Deville

[karrdocc]

Just replaced front calipers/hoses and pads on 1969 Cadillac Sedan Deville.
Now after pumping up brake pedal the front wheels are locked and wont release until I open the bleeder screw. I suspect a bad metering valve. Does any one have any other ideals or where I can find one of these valves?

[chrisntam]

I think they are only available used.  or eBay.  There were a bazillion '69s made, they are around.

try here: http://www.cadillacville.com
or
Honest Johns Caddy Corner (website is down) Phone:(940) 648-3330
or
http://www.caddydaddy.com/

You'll find one.

Why do you think it is bad?  Did the brakes work prior to you working on it?  What else did you change?

We'll figure it out....

[karrdocc]

Thanks for the two sources.

The reason I believe the metering valve is bad- After the front wheels are locked, I open he bleeder screw on one caliper and it frees both front wheels. I then work my way back until I get to the metering valve and when I open the inlet line, both front wheels stay locked.

The rear wheel cylinders was also changed and the system was bled/flushed thru gravity bleeding and a suction bleeder thru the bleeder screw.

Thanks again for the info.

[Jeff Rosansky CLC #28373]

When the fronts are locked are you sure the rears are still free? If you are sure it is the valve then I would remove it and see if you are able to just clean it....... Cant hurt.
Only real question is why did changing the fronts effect that valve? Is it possible you have a bad brake hose that is holding pressure in the system?
Jeff

[Scot Minesinger]

The shop manual should be a help.  Jeff is right, bad rubber brake hoses cause problems.  If they look original or questionable, they probably should be replaced.  Usually when I'm working brakes in an older car, I change them.  Don't forget the one in the back.