Wheels/Tires - Central Wheel Lock Information
473/10
ENU
4405
Sep 16, 2010
The present document was valid at the time of print. A later version may be available online
Central Wheel Lock: Additional Information When Driving On Race Circuits (73/10)
Model year:
as of 2010
Vehicle Type:
911 Turbo (997)/911 Turbo S (997)
911 GT3 (997)/911 GT3 RS (997)/911 GT2 RS (997)
Equipment:
Central lock (I-no. 422, 430)
Concerns:
Vehicles with central lock on wheels
Information:
Additional information for the use of the central lock components when driving on race circuits
Before a vehicle with central lock on wheels is driven on race circuits, the central wheel bolts must be greased as described below and tightened to a higher tightening torque. Please inform the customer of this information accordingly.
Parts Info:
Tools:
Socket wrench 9796
Assembly aid 9794 (for vehicles with PCCB - Porsche Ceramic Composite Brake)
Torque wrench Nr.91 Pos.2 (300-800 Nm/222-592 ftlb.)
Work Procedure:
1 Grease central wheel bolts in accordance with the following overview before driving the vehicle on race circuits.
To do this, first remove and partly disassemble the central bolts. For details, see 440519 Removing and installing wheel with central bolts.
Overview of central bolt surfaces to be greased
2 Tighten central bolts to a higher tightening torque according to the following sequence before driving the vehicle on race circuits.
Information
When mounting all wheels, the vehicle must never be supported by the wheel to be installed --> Lifting the vehicle.
Use a suitable torque wrench to tighten the central bolt using the three-step tightening procedure.
^ Step 1: Tighten central bolt to Tightening torque: 600 Nm (444 ft1b.) - -1-
^ Step 2: Loosen central bolt by approx. 600 (1/6 turn) -2-
^ Step 3: Tighten central bolt to Tightening torque: 600 Nm (444 ftlb.)+/-30 Nm (+/-22 ftlb.) - -3-
WARNING
Unsecured central bolt
^ Risk of damage to components
^ Danger of accidents
--> After mounting the wheel, make sure that the locking pin is engaged correctly in the central bolt.
If the locking pin -1- is still at the rear position and has not yet engaged in the inner toothing of the central bolt after mounting the wheel, the central bolt is still not secured Bolt not secured and must be secured manually to prevent it from becoming loose (applies to both road and race track use).
To do this, turn the locking pin to the left and right using a square extension until it engages in the central bolt.
When the central bolt is secured, the end of the locking pin -1- will be flush with the inner toothing of the central bolt Bolt secured
997420, 997421, 997450, 997451, 997630, 997631, 997650, 997651, 997810, 997811, 997850, 997851, 997860, 997861
Model year as of 2010
C02, C36
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