Ford Mustang (1999-2004) Service Manual: Brake Booster - Vacuum (Description and Operation)
Power Brake Booster


The vacuum type power brake booster (2005):
- is a dual diaphragm, vacuum assisted power brake booster
- reduces brake pedal force and travel distance.
- is located on the LH side of the bulkhead in the engine compartment, between the brake pedal (2455) and the brake master cylinder (2140).
- is divided into separate chambers by the diaphragms.
- will not operate if vacuum is restricted or if any of the vacuum related power brake components fail.
- is installed as an assembly.
If the power assist fails, the brake system will continue to operate with increased brake pedal effort.
Hose and Check Valve
The power brake booster check valve (2365):
- is located on the front of the power brake booster.
- is installed separately; (install a new grommet when installing a new check valve).
- is positioned between the power brake booster and the power brake booster hose.
- closes when the engine is turned off.
- in the closed position, traps engine vacuum in the power brake booster
- retains vacuum to provide several power assisted brake applications with the engine off.


Power Brake Actuation
Torque Specifications
...
Brake Booster - Hydro-Boost (Description and Operation)
The Hydro-Boost brake booster is a hydraulically operated brake booster
powered by the power
steering pump (3A674). The power steering pump provides the fluid pressure to
operate both the
power brak ...
Other materials:
Rear Drive Axle and Differential
The axle housing assembly consists of a cast center section with two
steel tube assemblies and
a stamped differential housing cover (4033). The differential housing cover
uses silicone sealant
as a gasket.
The hypoid-design gearset consis ...
Refueling
WARNING: Fuel vapor burns violently and a fuel fire can cause
severe injuries. To help avoid injuries to you and others:
• Read and follow all the instructions on the pump island.
• Turn off your engine when you are refueling.
• Do not smoke if you are n ...
Installation
1. Install the lower intake manifold gaskets.
2. Connect the fuel charging wiring harness to the rear of the lower intake
manifold and install the
manifold.
3. Install the intake manifold fasteners and tighten in the sequence shown.
4. Position the fuel ...
