911 Turbo Cabriolet AWD (997) F6-3.6L Turbo (2008)
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Component overview - central bolt system
Component overview of central bolt system
1 - Hub cap
2 - Wheel bolt with cone ring (not available separately)
3 - Wheel
4 - Lockable wheel bolt/locking mechanism (not available separately)
5 - Wheel hub
6 - Brake disc (grey cast iron or PCCB)
7 - Wheel driver (only available in a set as spare part/5 ea. No. 7)
Wheels with central bolts will be available for the 911 Turbo in the current model year 2009 (from March 2009/as an option, I-No. 422).
The central bolt system comes as standard on the 911 GT3, as of 2010 model. Technically, the central bolt system is the same as that used on the 911
Turbo. But the wheels are different and the color of the wheel bolts may be different.
Wheels with central bolts -3- are secured with a wheel bolt -2- (wheel bolt with removable cone ring) to the wheel hub -5-. The wheel bolt -2- is made
of high-strength aluminium and has a trapezoidal thread (right-hand thread). The same wheel bolt -2- is used for all four wheels.
The lockable wheel bolt -4- is an assembled component (only available complete), which has toothing that engages in the wheel hub -5- on one side
and in the wheel bolt -2- on the other side (if activated).
The lockable wheel bolt -4- can be pulled out when the wheel bolt -2- is removed in order to remove it from the wheel hub -5-. For safety reasons,
only remove the lockable wheel bolt -4- in order to check it and then re-insert it immediately in the wheel hub -5-.
Check that the lockable wheel bolt -4- is working perfectly before fitting the wheel.
The contact surfaces of the wheel on the brake disc -6- must be clean and free of paint and grease.
The wheel drivers -7- (5 ea.) comprise the driver pin, sleeve and self-locking screw. Only one set (5 ea./for one wheel) is available as a spare part.
Five new wheel drivers -7- (1 set) must be fitted when replacing the brake disc. Tightening torque for the self-locking screws = 6 Nm (4.5 ftlb.).
Removing and installing wheel
Removing wheel with central bolt
