F 250 4WD Super Duty V10-6.8L VIN Z CNG (2003)
Hydraulic Brake Booster: Service and Repair
Brake Booster-Hydro-Boost
Removal and Installation
WARNING: The power brake booster should not be carried by the accumulator, nor should it ever be dropped on the accumulator. Check
the snap ring on the accumulator for correct seating before the power brake booster is used. The accumulator contains high-pressure
nitrogen gas and can be dangerous if mishandled.
WARNING: If the accumulator is to be disposed of, it must not be exposed to excessive heat. Before discarding the accumulator, drill a
1.6-mm (1/16-inch) diameter hole in the end of the accumulator can to relieve the gas pressure. Always wear safety glasses when performing
this operation.
1. With the engine off, depress the brake pedal several times to discharge the accumulator.
2. Disconnect the battery ground cable. On vehicles equipped with dual batteries.
3. Remove the left side battery.
4. Remove the air cleaner housing.
5. Remove the brake pressure switch electrical connector.
6. Disconnect the power steering hoses.
7. Remove the brake master cylinder nuts.
