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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> Transmission >> Clutch >> 30 Clutch, Actuation -- 992 - 911 CARRERA (992) >> WM, 302019 Removing And Installing Clutch Master Cylinder >> Removing Clutch Master Cylinder

Removing Clutch Master Cylinder

WARNING: Preloaded or pressurized components
  • Risk of squashing or bruising

    → Do not reach into the danger area.

    → Relieve the tension on components before starting work.

    → Secure components to prevent them from loosening suddenly.

  1. Release electric plug connection on the clutch master cylinder -arrow a-  and disconnect it -arrow A-  .
    G15518928Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Electric plug connection to clutch master cylinder

    NOTE: Aggressive fluids
    • Risk of damage to components and surfaces

      → Do not spill fluids.

      → In the event of contact, wash the component or surface with water.

      → Replace components that are already damaged.

    Information 

    Brake fluid is hygroscopic! Close off all lines immediately using suitable stoppers.

    Brake fluid will flow from the lines. Place a cloth under the clutch master cylinder.

  2. Disconnect the supply and pressure hoses on the clutch master cylinder.
    G15518929Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Hydraulic lines for clutch slave cylinder (removal)

    1. 2.1 Pull off supply hose -1-  (-arrow A-  ) and close it off using a suitable stopper.
    2. 2.2 Release the lock -2-  using a screwdriver -arrow b-  .
    3. 2.3 Pull off pressure hose -3-  (-arrow B-  ) and close it off using a suitable stopper.
  3. Disengage push rod for brake booster (in the footwell).
    G15518930Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Pressing out push rod

    1. 3.1 >T40024 - Unlocking tool-1-  must be inserted ahead of the ball joint on the push rod -2-  from below.
    2. 3.2 Press the unlocking tool together -arrows A-  and separate the ball joint from the retaining clip -3-  (-arrow B-  ).
  4. Remove bearing pedestal screws from outside (plenum panel).
    1. 4.1 Unscrew screws -Arrows-  from above brake booster.
    G15518931Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Installing screws securing mounting saddle to the body from outside (as shown in figure)

  5. Loosen mounting saddle screws -1-  in the passenger compartment.
    1. 5.1 Unscrew collar nuts -2-  from mounting saddle on brake booster.
      G15518932Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Fastening mounting saddle in the passenger compartment

    2. 5.2 Unscrew collar nuts -3-  from mounting saddle inside the body.
    3. 5.3 Remove mounting saddle.
  6. Secure power spring assembly -2-  on the dismounted mounting saddle.
    1. 6.1 Press the clutch pedal -1-  slightly -Arrow-  until the clutch power spring axle -top arrow-  is visible through the bore.
      G15518933Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Clutch power spring assembly (securing)

    2. 6.2 Insert a suitable cotter pin -3-  into the bore on the clutch power spring axle -top arrow-  .
  7. Loosen clutch master cylinder from the clutch pedal -2-  .
    G15518934Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Disengaging push rod

    1. 7.1 Release retaining clip for push rod -1-  on the clutch pedal -2-  using >T10005 - pliers  (-arrows A -  ) and pull out the push rod -arrow B-  .
    2. 7.2 Turn the clutch master cylinder anti-clockwise by approx. 60° -arrow A-  .
      G15518935Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Clutch master cylinder in mounting saddle (removal)

    3. 7.3 Removing clutch master cylinder -arrow B-  .
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