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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> 46 Brakes - Brake Mechanism 3.0L (Eng Code MDK.Ca) -- 992 - 911 CARRERA (992) >> WM, 465319 Removing And Installing Brake Disc Rear >> Installing Brake Disc Rear >> Installing Rear Brake Disc

Installing Rear Brake Disc

Information 

New brake pads and brake discs require a bedding-in period of several hundred kilometres! Only then do they achieve their best friction coefficient and wear value!

The sightly/reduced braking effect must be compensated for by increased pressure on the brake pedal.

Information 

  1. Prepare for installing the brake disc.
    1. 1.1  Check that all components, including the electric parking brake, are in perfect condition (visual inspection) and replace if necessary.
    2. 1.2  Clean the flat and centering surfaces on the brake disc and wheel hub.
    3. 1.3  Coat the centering surface on the wheel hub with a very thin coating of Optimoly TA (aluminum paste) (not on GT3 vehicles).
  2. Wheels with wheel bolts:

    Install brake disc -1-  .

    1. 2.1  Position brake disc -1-  on the wheel hub.
    2. 2.2  Fit and tighten new  brake disc centering screws -2-  .

      > Tightening torque 5 Nm (3.7 ftlb.) 

      G15519992Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Rear brake disc

  3. Wheels with centre lock (not GT3 vehicles):

    Install brake disc -1-  .

    1. 3.1  Position brake disc -1-  on the wheel hub.

      Note the bores on the brake disc at the wheel hub!

    2. 3.2  Fit and tighten new  wheel driver bolts -2-  .

      > Tightening torque 31 Nm (22.9 ftlb.) 

      G15519993Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Brake disc with wheel driver bolts

  4. Wheels with centre lock GT3 vehicles:

    Install brake disc -1-  . Do not grease the centering surfaces on the wheel hub.

    G15519994Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Brake disc GT3

    1. 4.1  Position brake disc -1-  over the drivers -2-  on the wheel hub.
    2. 4.2  Fit and tighten new centering screws -3-  .
  5. Move electric parking brake (EPB) into installation position.
    1. 5.1  Connect PIWIS Tester  to the vehicle; switch on PIWIS Tester. 
    2. 5.2  Switch on ignition.
    3. 5.3  Start diagnostics.
    4. 5.4  Select 'Porsche Stability Management (PSM)'  control unit.
    5. 5.5  Select 'Drive links/tests'  tab.
    6. 5.6  Select menu item 'End brake pad change mode'  ; press F12  to continue.
    7. 5.7  Follow the instructions in the Tester.
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