Troubleshooting and Installation Tips...

Remove Residual Valve

The residual valve holds ten pounds on a drum brake system when the brakes release to keep the spring on the shoes from collapsing the wheel cylinders. Residual valves can be found in the end of the cylinder in ford fruit jar single master cylinders, where the brake lines screw into the master cylinder on some dual cylinders, one in the rear line only on front disc rear drum systems, or in the combination valve rear line only. You can remove the residual valve from the master cylinder where the brake line screws in with a sheet metal screw. Screw it in and then pull. It will come right out.