2001 GMC Savana 1500 Brake Master Cylinder

You need to inspect the reservoir, clean the reservoir with denatured alcohol, dry the reservoir, lubricate the new seals and the outer surface area of the reservoir-to-housing barrels, install the lubricated seals, the reservoir to the master cylinder body, the diaphragm, the cover, the master cylinder, and install the master cylinder.

You need to remove the master cylinder, the cover, and the diaphragm, drain the brake fluid from the reservoir, secure the master cylinder in a vise, remove the reservoir body by pulling the body straight up and away, and the seals from the grooves in the reservoir.

You need to apply the parking brake and block the wheels, disconnect the brake pipes from the brake master cylinder, plug the open brake pipe ends, remove the master cylinder mounting nuts and the master cylinder, and drain the master cylinder reservoir of all brake fluid.

The recommended torque is 36 Nm (27 ft. lbs.).

You need to clean the interior and exterior of the master cylinder, the secondary piston, and the return spring, inspect the master cylinder bore, inlet and outlet ports, the secondary piston, and the return spring, dry the master cylinder and the individual components, lubricate the master cylinder bore, the secondary piston, the return spring, and all of the individual overhaul components, assemble the lubricated, new primary seal and retainer, and new secondary seal onto the secondary piston, install the lubricated return spring and secondary piston assembly, install the lubricated, new primary piston assembly, depress the primary piston, install the new piston retainer, the master cylinder reservoir, the reservoir cap and diaphragm, and the master cylinder.