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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (4X Chassis - General 3.0L (Eng Code MDK.Kb) -- 992 - 911 CARRERA (992)) >> WM, 4X00IN Central Wheel Lock: Component Assessment >> Checking Central Lock Components >> Assessment Of Wheel Adapters, Wheel And Brake Disc

Assessment Of Wheel Adapters, Wheel And Brake Disc

WARNING: This page is about a different car, the 2024 Porsche 911, 2023 Porsche 911, and 2022 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check wheel adapters  > Checking wheel adapters. 
    G15528004Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Checking wheel adapters

    Assessment of wheel adapters  
    Looks normal and seems normal while driving  Excessive signs of wear 
    Light scratches on the surface  > Wheel adapter OK 
    • There are light scratches on the surface of the wheel adapters -Arrows-  .
    • The scratches are caused by removing and fitting wheels and can be deeper scratches or just minor scrapes, depending on how often the wheel has been changed.
    		 Eloxal coating is completely worn down in places 
    > Wheel adapter not OK 
    • The red Eloxal coating on the wide surface is completely worn down on the cylindrical surface of the wheel adapters -Arrow-  .
    • The wheel adapters must also be replaced if they can be turned by hand.
    G15528005Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Wheel adapter OK
    • Additional picture: 
    G15528007Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Wheel adapter not OK
    G15528006Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Wheel adapter OK (1)
    Result/Action required  => The wheel adapters  do not  have to be replaced. => The wheel adapters  and wheel hub  must be replaced.
  2. Check the contact surface for the brake disc on the wheel  (> Checking wheel contact surface). 
    G15528008Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Checking wheel contact surface

    Assessment of wheel contact surface  
    Looks normal and seems normal while driving  Excessive signs of wear 
    Discoloration or slight irregularities on the surface) 
    Wheel contact surface OK 
    • Discoloration or slight irregularities on the surface due to the slightest movements while driving (micro-movements) are OK -Arrow-  .
    • The contact surface is smooth (flat).
    • Material is not worn down.
    		 Material erosion  > Wheel contact surf ace not OK 
    • There is material erosion on the outer edge -Arrow-  of the wheel contact surface.
    • The edge is worn down (eroded) so much that there is a radius on the outer edge -Arrow-  .
    • The wheel contact surface is uneven.
    • Signs of wear can also be seen on the wheel hub  and brake disc  in accordance with the relevant description.
    G15528009Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Wheel contact surface OK
    • Additional picture: 
    G15528010Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    Wheel contact surface OK (1)
    G15528011Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Wheel contact surface not UK
    Result/Action required   
    => The wheel  does not  have to be replaced. => The wheel  and wheel hub  must be replaced.
    => If there are visible signs of wear on the brake disc  in accordance with the description below, the brake disc must also be replaced.
  3. Check the contact surface for the wheel on the brake disc  (> Checking brake disc). 
    G15528012Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Checking brake disc

    Brake disc assessment  
    Looks normal and seems normal while driving  Excessive signs of wear 
    Discoloration or slight irregularities on the surface  > Brake disc OK 
    • Discoloration or slight irregularities on the surface due to the slightest movements while driving (micro-movements) are OK -Arrow-  .
    • The contact surface is smooth (flat).
    • Material is not worn down.
    		 Material erosion  > Brake disc not OK 
    • Material erosion and some crater-shaped cracks can be seen on the wheel contact surface -Arrow-  .
    • The contact surface is uneven.
    G15528013Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Brake disc OK
    • Additional picture: 
    G15528015Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Brake disc not OK
    G15528014Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Brake disc OK (1)
    Result/Action required   
    => The brake disc  does not  have to be replaced. => The brake disc, wheel adapters  and wheel hub  must be replaced.
    => If there are visible signs of wear on the wheel contact surface  in accordance with the previous description, the wheel  must also be replaced.
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