Bob's Resource Website (2007) 36237 MC prep (click images for more detail)
Editorial changes March 2020 (Procedure is the same / application is modified)
Most all Drum Brake master cyinders HAVE residual valves built into them. Their function is to maintain a certain fluid pressure on the brake lines AFTER you have removed your foot from the pedal. This residual pressure holds the brake linings closer to the friction surface, so you don't have to push the pedal too far, the NEXT time you hit the brakes. Each application is going to be different, due to the strength of the brake springs, whether or not your MC is above or below the brake cylinder, if you're changing to front disk brakes, or just upgrading to a dual MC on any Studebaker, etc. This is the process to remove the residual valves if necessary, on a 36237 master cylinder. On my application, it was for an underfloor MC replacement on a GT Hawk that already had Factory Disk Brakes (now Turner brakes).. Happy motoring/ RJ
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