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Home >> Ford >> 2002 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 264 (Power Brake Actuation - Brake Booster - Excursion & F250-F550 Super Duty) >> General Procedures >> Hydro-Boost Bleeding

Hydro-Boost Bleeding

WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: The Hydro-Boost power brake booster (2B560) 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 (3A697) with MERCON(R) Multi-Purpose ATF XT-2-QDX or MERCON(R) equivalent.
  2. Remove the powertrain control module (PCM) fuse to prevent the engine from starting.
    Fig 1: Removing Powertrain Control Module (PCM) Fuse To Prevent Engine From Starting
    G01543464Courtesy of FORD MOTOR CO.
  3. Crank the engine for several seconds.
  4. Check the fluid level in the power steering oil reservoir and add if necessary. Install the powertrain control module (PCM) fuse.
  5. Start the engine.
  6. With the engine running, turn the steering wheel (3600) from stop-to-stop twice. Turn the engine off.
  7. Depress the brake pedal (2455) 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 (when the foaming stops).