This system is primarily found on trucks equipped with gasoline engines. Two types of vacuum boosters are used, the single diaphragm type and the tandem diaphragm assembly.
REMOVAL & INSTALLATION
- Remove the two nuts holding master cylinder to power cylinder and position it away from the power cylinder. Do not disconnect hydraulic brake lines; be careful not to bend or kink pipes.
- Disconnect the vacuum hose from the vacuum check valve on the front housing of the power head. Plug vacuum hose to prevent dust and dirt from entering hose.
- Disconnect the power brake push rod from the brake pedal.
- Remove the four nuts from the mounting studs which hold the power brake to the cowl.
- Mount the power brake booster to cowl and tighten retaining nuts.
- Connect the power brake push rod to the brake pedal.
- Connect vacuum hose to vacuum check valve.
- Connect master cylinder to booster and tighten nuts.