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Home >> Porsche >> 2015 >> Boxster Base, Automatic DCT Trans >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> 47 - Brakes - Hydraulic Brake System, Regulator -- (981) BOXSTER/CAYMAN >> WM 477019 Removing And Installing Brake Booster (All Models) >> Preliminary Work

Preliminary Work

  1. Remove cover over the brake components (brake booster, brake master cylinder and hydraulic unit). → 852219 REMOVING AND INSTALLING COVER - section on "Removing".
    1. Brake fluid reservoir
    2. Brake master cylinder
    3. Brake booster
    4. Hydraulic unit
      Fig 1: Identifying Brake Components
      G10026678Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    1. 1.1. Unclip cover at the left and right -arrows-  and remove it.
      Fig 2: Removing Brake Components Cover
      G10026679Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  2. Remove alarm siren.
  3. Remove brake master cylinder → 471519 REMOVING AND INSTALLING BRAKE MASTER CYLINDER  - section on "Removing".


  1. Remove cover over the brake components (brake booster, brake master cylinder and hydraulic unit). → 852219 REMOVING AND INSTALLING COVER - section on "Removing".
    1. Brake fluid reservoir
    2. Brake master cylinder
    3. Brake booster
    4. Hydraulic unit
      Fig 1: Identifying Brake Components
      G10026686Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    1. 1.1. Unclip cover at the left and right -arrows-  and remove it.
      Fig 2: Removing Brake Components Cover
      G10026687Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  2. Remove alarm siren.
  3. Remove brake master cylinder → 471519 REMOVING AND INSTALLING BRAKE MASTER CYLINDER  - section on "Removing".
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