You can apply the park brake, deplete the vacuum reserve in the vacuum booster by applying the brake pedal 3 times or until the brake pedal becomes firm, remove the electrical connectors for the DOD sensor and the active booster connector, the vacuum hose from the check valve, the 2 master cylinder nuts, position the master cylinder aside and secure with heavy mechanics wire or equivalent, remove the
Brake Booster pushrod retainer bolt, the brake booster pushrod retainer, the stop lamp switch, the brake booster nuts, the power vacuum brake booster, and discard the brake booster gasket.