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Posted by Chriscase on Wednesday, February 25, 2009 at 19:51:38 :
In Reply to: 1965 WM300-Locking Brakes posted by mike murray, NJ on Wednesday, February 25, 2009 at 18:43:47 :
Get underneath and pull the pedal while watching the piston end- you'll need to pull the boot back to see. If there is no play, the piston may not be returning enough to allow the fluid back out of the system. About 1/16" is good.
If it is only one axle it might be a bad flex hose. One front cylinder might be that flex hose.
Or, it could be gummy wheel cylinders. So sticky they don't return- pedal pressure pushes them out, but the springs can't push the gunked up pistons back in. Rebuild kits are available.
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