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Home >> Ford >> 1990 >> Bronco II 4WD, Standard, M5OD-R1 >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Disc & Drum >> Removal & Installation >> Power Brake Booster >> Installation

Power Brake Booster: Installation

  1. Prior to installing power brake unit, ensure that booster rubber reaction disc is properly installed. See Fig 1 . if master cylinder push rod is remove or accidentally pulled out, a dislodged disc may cause excessive pedal travel.
  2. The reaction disc is Black compared to the Silver-colored valve plunger that will be exposed if push rod and seat are removed. To install power brake unit, reverse removal procedure. Adjust push rod (if adjustable). Start engine and check brake operation.
Fig 1: Checking Brake Booster Reaction Disc Installation
G30568Courtesy of FORD MOTOR CO.