OEM Ford E-250 Brake Booster

Ford E-250 Brake Booster Parts and Q&A

• Brake Booster
  5C2Z-2005-BA
  Q: How to service the vacuum brake booster on Ford E-250?

  A:

  Begin service of the vacuum brake booster when both the engine and brake pedal have been activated multiple times to exhaust brake booster vacuum reserves. Beginning with master cylinder removal you should disconnect the check valve of the brake booster component. The brake booster push rod will disconnect only after removing the cotter pin cover and its corresponding pin. First take away the stoplamp switch and the brake booster push rod bushing before removing the brake booster push rod from the brake pedal pin. Take out the brake booster by unfastening its four nuts and removing the unit from its place. The installation process requires following the opposite steps of removal while tightening brake booster nuts to 25 Nm (18 ft. lbs).
• Brake Booster
  3C2Z-2005-CA
  Q: How to remove air from the Hydro-Boost power brake booster on Ford E-250?

  A:

  Typical operation of the Hydro-Boost power brake booster accomplishes self-bleeding as well as this procedure removes air from the system while additional normal driving operations eliminate remaining trapped air. The first step involves adding clean automatic transmission fluid to the power steering oil reservoir. You need to disable the PCM relay to stop engine start before cranking the engine for multiple seconds. Finally check the power steering oil reservoir fluid level then add appropriate amounts before placing back the PCM relay. Slowly start the engine and perform two stopping-and-starting wheel turns during the engine operation before shutting off the motor. Multiple brake pedal depressions with discharging of the accumulator are needed before performing previous actions. Foaming in the system requires engine power stop followed by waiting until foaming ends. Repetition of these procedure steps should be done until no more air exists in the system and foaming stops.