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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 61 (46 Brakes - Brake Mechanism 3.8L (Eng Code MDK.H) -- 992 - 911 CARRERA (992)) >> WM, 465304 Measuring Rear Brake Discs >> Measuring Rear Brake Disc >> Measuring Rear Brake Disc - Lateral Runout

Measuring Rear Brake Disc - Lateral Runout

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  1. Fit > 9510/1 - adapter plate-1-  .
    1. 1.1 > 9510/1 - Adapter plate-1-  must be fitted on the hub of the brake disc -2-  .
    2. 1.2  Screw in and tighten wheel bolts -3-  .
      G15526469Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Adapter plate on rear brake disc

  2. Only for vehicles with central wheel bolts: 

    Fit > 9510/1 - adapter plate-1-  .

    1. 2.1 > 9510/1 - Adapter plate-1-  must be fitted on the hub of the brake disc -2-  .
    2. 2.2  Position wheel driver pins -3-  .
    3. 2.3  Screw in and tighten screws for wheel driver pins -4-  .

      > Tightening torque 14 Nm (10.5 ftlb.) 

      G15526470Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Adapter plate on rear brake disc (PCCB)

    Information 

    The front face of the wheel hub must not be corroded.

    The front face of the wheel hub must be cleaned using a fine emery cloth if necessary.

  3. Measure lateral runout of brake disc -3-  .
    1. 3.1  Secure ball joint arm -1-  from > Nr.147-1 - dial gauge set with ball joint arm  at a suitable position on the wheel suspension.
    2. 3.2  Fit dial gauge -2-  from > Nr.147-1 - dial gauge set with ball joint arm  and adjust it so that the dial gauge -2-is tout hing the outer edge of the brake disc -3-  with slight preload.
    3. 3.3  Set dial gauge -2-  from > Nr.147-1 - dial gauge set with ball joint arm  to zero, turn the brake disc -3-  at the > 9510/1 - adapter plate-4-  slowly by one full turn and check the deflection of the dial gauge -2-  .
      G15526471Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Dial gauge on rear brake disc

  4. If the lateral runout of the brake disc is outside of the tolerance range:

    Measure lateral runout of the wheel hub. 

    Maximum lateral runout of brake disc:  > Dimension 0.07 mm