Anybody had any experience with changing the master cylinder/hydraulic booster? I have to change mine because it leaks power steering fluid in the cab and has soaked the carpet.
Any hints would be appreciated.
Thanks in advance

 

Here is some reading for ya.I have threatened several times to change my hydroboost because of mushy brake pedal but never have.I would like to hear a success story on this and have not read one yet that says ''man my brake pedal is high after the hydroboost change''...

https://www.ford-trucks.com/forums/1...-guidance.html

 

Instructions taken from Ford manual on dvd:
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.

With the engine off, depress the brake pedal (2455) several times to discharge the accumulator.
Disconnect the battery ground cable (14301). On vehicles equipped with dual batteries. For additional information, refer to Section 414-01 .
Remove the left side battery (10655). For additional information, refer to Section 414-01 .
Remove the air cleaner housing. For additional information, refer to Section 303-12 .
Remove the brake pressure switch electrical connector.

Disconnect the power steering hoses.

Remove the brake master cylinder nuts.

Remove the power steering hose mounting bracket and the brake master cylinder (2140), and position aside.

Remove the instrument panel steering column opening cover.

Remove the self-locking pin.

Remove the brake pedal position (BPP) switch (13480) and the brake booster push rod from the brake pedal pin.

Remove the power brake booster nuts, and remove the power brake booster.

To install, reverse the removal procedure.
Install new O-ring seals on the power steering pressure fittings.
Bleed hydro-boost. For additional information, refer to Hydro-Boost Bleeding in this section.


Hydro-Boost Bleeding
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.

Fill the power steering oil reservoir (3A697) with MERCON® Multi-Purpose ATF XT-2-QDX or MERCON® equivalent.
Remove the powertrain control module (PCM) fuse to prevent the engine from starting.

Crank the engine for several seconds.
Check the fluid level in the power steering oil reservoir and add if necessary. Install the powertrain control module (PCM) fuse.
Start the engine.
With the engine running, turn the steering wheel (3600) from stop-to-stop twice. Turn the engine off.
Depress the brake pedal (2455) several times to discharge the accumulator.
Repeat Steps 5 and 6.
If foaming occurs, stop the engine and allow the foam to dissipate.
Repeat Steps 5 and 6 as required, until all the air is removed from the system (when the foaming stops).