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

Power Brake Booster

Brake Booster - Vacuum

 

Brake Booster - Vacuum

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.

Hose and Check Valve

 

Hose and Check Valve

    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:

    Accelerator Cable Bracket - 4.6L (2V)
    Removal and Installation 1. Disconnect the speed control cable from the throttle body and the bracket. For additional information, refer to Section. 2. Disconnect the accelerator cable from the throttle body by rotating the throttle body full open and align ...

    Camshaft Position (CMP) Sensor - 4.6L
    Removal and Installation 1. Disconnect the battery ground cable. For additional information, refer to Section. 2. Remove the bolts and position aside the power steering pump reservoir. 3. Remove the camshaft position (CMP) sensor. Disconnect ...

    Installation
    WARNING: To reduce the risk of serious personal injury, read and follow all warnings, cautions and notes at the beginning of the removal procedure. 1. Install the passenger air bag module. 1. Position the passenger air bag module into the instrume ...