Econoline E350 1 Ton V8-5.4L SOHC VIN L (1999)
Hydraulic Brake Booster: Service and Repair
Removal
WARNING: The power brake booster must not be carried by the accumulator, nor should it ever be dropped on the accumulator. The snap
ring on the accumulator must be checked for proper 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, fire or incineration. 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. CAUTION: Do not activate the power brake booster with the brake master cylinder removed.
With the engine off, depress the brake pedal several times to discharge the accumulator.
2. Disconnect the battery ground cable.
3. Disconnect the power steering pressure hoses.
4. Install new Teflon(R) seals on the power steering pressure fittings.
5. Disconnect the power steering return line hose.
