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Rebuilding Brake Proportion Valve

1181 Views 3 Replies 3 Participants Last post by  mustangmark65gt
Does anyone know how to disassemble or rebuild the brake proportioning valve on 67 Disc brake ? The barrel shaped valve above the rearend ? email direct [email protected]
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Dissassemble by holding the round part in a vise and unscrewing the hex end.

68 GT500
68 1/2 CJ Coupe

MCA# 18519
I tried to rebuild one once.... The piston was so badly stuck that I had to force it out with hydraulic presure. The valve contains Metric U-pac seals... Not a rebuild kit avalable (at that time) . I installed an adjustable valve from Wildwood. Seems like Ford had a replacement (1970 part#) for mega-bucks.

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The proportioning valve from my 65 Gt was rebuilt by a specialty brake shop in Southern CA. I believe the kit was about $35 and labor $45. It works like new.

I soaked it in penetrating oil for several weeks before I dismantled it, and realized my skills weren't up to putting a new kit in.

Good luck.
Mark Mosteller
Garden Grove, CA

"Everything that is really great and inspiring is created by the individual who can labor in freedom." Albert Einstein

65 Fastback GT. 65 Convertible. 84GT, 90 5.0 LX Convertible. MCA. Southern, CA
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