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Discussion Starter #1
I am rebuilding the brakes on my '68 w/ power disks. The proportioning valve has a narrow groove around it near the center. There was some kind of "O" ring in it but it broke apart. Is this a big problem? Can it be replaced? I know what the proportioning valve does but not the details of how it works.
Thanks,
Tom
 

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Just use a o-ring. The is a vent/dirt seal
 
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