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1967 - 1978 Ford Disk/Drum Brake Pressure Differential Valve Rebuild

This document describes how to rebuild 1967 - 1978 Ford disk and drum brake pressure differential valves (made by Weatherhead) by replacing the internal parts that typically wear out after years of service. Note that there are minor internal differences between the two versions of these valves, but the basic procedures are the same. Tools needed:

1969 - 1971 Ford Rev Limiter Upgrade

This document describes how to replace the electronic circuit board found in a 1969, 1970, and 1971 Ford electronic engine governor (also called a rev limiter) with a modern circuit board manufactured by Pertronix and installed in their digital rev limiter product. The project requires disassembly of both limiters and modification of the Pertronix circuit board to work inside the Ford case. Basic soldering skills are required.

1967 - 1969 Wagner Brake Pressure Differential Valve Rebuild

This document describes how to rebuild the Wagner brake pressure differential valve (sometimes called a "distribution block") and front disk brake pressure control valve (sometimes called a "proportioning valve") used on Ford and Lincoln/Mercury vehicles by replacing the internal parts that typically wear out after years of service. Tools needed: