Removal & Installation
1)Disconnect stoplight switch to prevent battery discharge. Support master cylinder. Remove vacuum hose from booster check valve. Remove master cylinder mount nuts. Pull master cylinder away from booster to allow booster removal.
2) From inside cab, remove cotter pin holding stoplight switch to brake pedal arm. See Fig 1 . Remove bushing and spacers. Remove booster mount nuts, and then remove booster. To install, reverse removal procedure.