E 350 V8-4.6L SOHC VIN W (2005)
Brake Bleeding: Service and Repair
Hydro-Boost Bleeding
Hydro-Boost Bleeding
Material
NOTE: The Hydro-Boost power brake booster is generally self-bleeding, and the following procedure will normally bleed the air from the power
brake booster. Normal operation of the vehicle will further remove any additional trapped air.
1. Fill the power steering oil reservoir with clean automatic transmission fluid.
2. Remove the Powertrain Control Module (PCM) relay to prevent the engine from starting.
3. Crank the engine for several seconds.
4. Check the fluid level in the power steering oil reservoir, and add if necessary. Install the PCM relay.
5. Start the engine.
6. With the engine running, turn the steering wheel from stop to stop twice. Turn the engine off.
7. Apply the brake pedal several times to discharge the accumulator.
8. Repeat Steps 5 and 6.
9. If foaming occurs, stop the engine and allow the foam to dissipate.
10. Repeat Steps 5 and 6 as required, until all the air is removed from the system and the foaming stops.
