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Home >> Porsche >> 2019 >> Cayenne Turbo >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 26 (40 Wheel Suspension Front Drive Shaft 3.0L -- 9YA - Cayenne (9YA)) >> WM, 405041 Repairing Wheel Bearing Housing >> Repairing Wheel Bearing Housing

Repairing Wheel Bearing Housing

WARNING: This page is about a different variant/trim than selected.

Information 

Perform all tasks required during thread repairs manually.

Use cutting oil for thread repairs.

Overview of tools: > VAS 6627A - Brake calliper repair kit 

G15288757Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Overview of tools: Time-Sert basic set 

1  Assembly aid
2  Fastening screw, M12
3  Fastening screw, M14
4  Guide sleeve, M12 - internal diameter: 12.25 mm
5  Guide sleeve, M12 - internal diameter: 10.00 mm
6  Threading die holder
7  Guide sleeve, M14 - internal diameter: 14.50 mm
8  Guide sleeve, M14 - internal diameter: 12.20 mm
9  Cutting oil

Overview of tools: > Nr.122-1 Pos.5 - Time-Sert thread repair set 

G15288758Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Overview of tools: Time-Sert additional set 

1  Drill bit
2  Seat miller
3  Tap
4  Screw-in tool
5  Threaded bush, M14

Information 

The wheel bearing housing can remain installed during thread repairs.

  1. Fit the assembly aid on the intact thread with a fastening screw -3-  . You will be working on the other side with the defective thread.
    G15288759Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Assembly aid 

  2. Drill out the defective thread.
    G15288760Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Thread tools 

    1  Drill bit, Time-Sert thread repair set No. 122-1 Item 5
    7  Guide sleeve, M14, internal diameter: 14.5 mm, Brake calliper repair set VAS 6627
    6  Threading die holder, Brake calliper repair set VAS 6627
    1. 2.1  Drill out installation sequence for the thread.
    2. 2.2  Fit guide sleeve into assembly aid. Drill out the thread as far as the stop using the threading die holder and drill bit.
    3. 2.3  Remove assembly aid. Carefully blow the chips out of the bore hole. Wear protective goggles.
  3. Countersink the bore hole.
    1. 3.1  Using the seat miller, countersink the bore until it is sufficiently deep to allow the stop of the seat miller to sit on the wheel bearing housing (as far as the stop). -2- 
      G15288761Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Bore hole 

    2. 3.2  Bore hole countersunk. -A - 
      G15288762Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Bore hole countersunk 

    3. 3.3  Check the countersink depth of the bore hole

      Fit the M14 threaded bush into the bore hole against the screw-in direction. -5- 

      G15288763Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Checking countersink depth 

    4. 3.4  The collar of the M14 threaded bush must be sitting in the recess up to the first thread. -5- 
      G15288764Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Checking countersink depth as far as the first thread 

  4. Fit the assembly aid with a fastening screw. -3-  .
    G15288765Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Assembly aid 

  5. Cut thread.
    1. 5.1  Cut installation sequence for the thread.
      G15288766Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Tools for thread 

      1  Assembly aid, Brake calliper repair set VAS 6627
      3  Tap, Time-Sert thread repair set No. 122-1 Item 5
      8  Guide sleeve, M14, internal diameter: 12 mm, Brake calliper repair set VAS 6627
      6  Threading die holder, Brake calliper repair set VAS 6627
    2. 5.2  Oil the tap. -3- 
      G15288767Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Tap 

    3. 5.3  Insert the tap into the assembly aid. The guide sleeve is projecting slightly out of the assembly aid. But it has made contact. The guide sleeve will drop during the cutting process using the threading die holder.
      G15288768Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Tap 

      1  Assembly aid, Brake calliper repair set VAS 6627
      3  Tap, Time-Sert thread repair set No. 122-1 Item 5
      8  Guide sleeve, M14, internal diameter: 12 mm, Brake calliper repair set VAS 6627
    4. 5.4  Carefully cut the thread as far as the end of the bore hole (as far as the stop) using the tap.
      G15288769Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Tap as far as the stop 

      1  Assembly aid, Brake calliper repair set VAS 6627
      8  Guide sleeve, M14, internal diameter: 12 mm, Brake calliper repair set VAS 6627
      6  Threading die holder, Brake calliper repair set VAS 6627
  6. Re-mill the bore hole.

    Information 

    Mill in/countersink the bore hole.

    • The collar of the threaded bush must be at least 0.2 mm below the contact surface of the wheel bearing housing in the bore hole. 
    • The collar of the threaded bush must not be projecting out. 
    1. 6.1  Using the seat miller, countersink the bore again until it is sufficiently deep to allow the stop of the seat miller to sit on the wheel bearing housing (as far as the stop). -2- 
      G15288770Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Bore hole 

    2. 6.2  Carefully cut the thread again as far as the end of the bore hole (as far as the stop) using the tap. This removes the remaining milling burrs. The tap must screw out without catching!
    3. 6.3  Check again to make ours that the collar of the threaded bush has disappeared in the recess. If it has not disappeared, repeat the milling process! -5- 
      G15288771Courtesy of PORSCHE CARS NORTH AMERICA, INC.

      Checking countersink depth as far as the first thread 

  7. Clean the thread  (using brake cleaner for example) and carefully blow the chips out of the bore hole. Wear protective goggles.
  8. Insert the M14 threaded bush.
    G15288772Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Threaded bush 

    1. 8.1  Screw in the M14 threaded bush as far as possible by hand.
    2. 8.2  Only oil the screw-in tool! Screw in the screw-in tool as far as possible by hand. Continue screwing until the threaded bush is sitting slightly deeper in the bore hole on the wheel bearing housing.
    3. 8.3  Then, screw the threaded bush in further using the threading die holder and the screw-in tool. -4- 

      Information 

      Mill in/countersink the bore hole.

      • The collar of the threaded bush must be at least 0.2 mm below the contact surface of the wheel bearing housing in the bore hole. 
      • The collar of the threaded bush must not be projecting out. 
    4. 8.4  Once the M14 threaded bush is screwed in so that it is sitting slightly deeper in the bore hole on the wheel bearing housing, you will feel the increased resistance. Continue screwing carefully until there is less resistance again.
    5. 8.5  The screw-in tool must screw out without catching! -4- 
  9. Check that the M14 threaded bush is seated correctly.
    G15288773Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Threaded bush fitted at the correct position, at least 0.2 mm deep er in he bore hole 

    WARNING: Threaded bush sticking out of wheel bearing housing. 
    • Brake calliper can become loose. 
      • The contact surface of the brake calliper must be flush with the contact surface of the wheel bearing housing.
      • The brake calliper must not be supported on the threaded bush.
      • There must be NO gap between the brake calliper and wheel bearing housing.
    1. 9.1  The M14 threaded bush -5-  is inserted at the correct position if the collar of the M14 threaded bush is below the contact surface of the brake calliper -A -  ! The M14 threaded bush must not be projecting out.
    2. 9.2  The M14 threaded bush is at the correct position if it is sitting slightly deeper in the bore hole. -Arrows- 
  10. Clean the thread with brake cleaner after you have completed the repair work. The thread must be free of grease and chips. 
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