Removing Wheel With Central Bolt

Only use the permitted special tool -1- socket wrench 9796 on the 911 with centre-lock wheel!

Fig 1: Identifying Central Bolt (Socket Wrench)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

IMPORTANT: "Never" use special tool -2- (socket wrench 9451) from the Carrera GT on the 911 with centre-lock wheel.
To avoid confusion, stick an appropriate sticker on socket wrench 9451 (for the Carrera GT)! Order number 000.721.945.11.
Reason: The lockable wheel bolt/locking mechanism will break off because there is no plunger (on the Carrera GT tool) for releasing the lockable wheel bolt.
This means that the wheel will not be secured. This can no longer be detected once the hub cap is fitted!

Raise the vehicle only at the jacking points provided. → 4X00IN01 LIFTING THE VEHICLE . Alternatively, raise the vehicle (handbrake on) until the wheel you want to work on is up off the ground.
Carefully lever the crested hub cap out using a small screwdriver.
To do this, guide the screwdriver deeply into the opening groove and then carefully lift up the cap.

Do not turn the screwdriver to the left or right while doing this!

Stick adhesive tape on the screwdriver if necessary to ensure that the screwdriver does not scratch the surface of the central bolt.

Fig 2: Removing Crested Hub Cap
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Information
- The lockable wheel bolt is only released when special tool 9796 is fitted as far as it will go onto the wheel bolt (safety lock on the central bolt is pushed back).
- The socket locks at this position.
- Get a second person to press the brake pedal to prevent the wheel from turning.
- When loosening the central bolt, make sure that the tool remains fully engaged and does not slide off even slightly (risk of damage to the lockable wheel bolt/locking mechanism).
- A very high torque is required in order to loosen the central bolt. Always turn in the correct direction (anti-clockwise to open the central bolt).
Socket wrench 9796 -1- (socket) must be fitted and pressed on as far as it will go. The socket -1- locks at this position.
The lockable wheel bolt is then released.

If the lockable wheel bolt (locking mechanism) is difficult to move in axial direction (becomes tilted in the wheel bolt toothing/socket cannot be fitted), loosen the locking mechanism using a suitable mandrel (press towards the wheel hub).

To ensure that the socket -1- can then be pulled off the wheel bolt (using an acceptable amount of force), grease the O-ring on the release plunger.

Fig 3: Positioning Tool
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Unscrew the wheel bolt you released using special tool socket wrench 9796. Get a second person to press the brake pedal to prevent the wheel from turning.
When loosening the central bolt, make sure that the tool remains fully engaged and does not slide off even slightly.

Fig 4: Opening Central Bolt (Turning Anticlockwise)
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Unscrew the central bolt and set it down in such a way that the conical area or trapezoidal thread cannot get dirty.

Fig 5: Removing Central Bolt
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In the case of vehicles with PCCB (Porsche Ceramic Composite Brake), screw an assembly aid 9794 (hub extension) -1- into the wheel hub before fitting the wheel.
This prevents damage to the brake disc when taking off the wheel.

Then remove the wheel carefully.

Fig 6: Identifying Hub Extension (Assembly Aid)
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