Porsche 911 GT3 Cup 2018, Techical Manual

Page: 173 / 477

Version: 4/20/2018
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172
Chassis
911 GT3 Cup (991 II)
MY 2018
3.1.3 Wheel nut
The left aluminum wheel nuts are different to the right wheel nuts and can be
distinguished as follows:
Right vehicle side = left-hand thread, blue color
Left vehicle side = right-hand thread, red color
Wheel nuts/wheel bolts
Loss of wheels
Loss of control over the vehicle
•
The wheel nuts must be replaced following 6
hours of use.
•
The wheel bolts must be checked and
regenerated after 6 hours of use.
Porsche Motorsport recommends also replacing the wheel nuts during a long-distance
race (after approx. 6 hours running time) to verify and regenerate them. Clean the
threads, judge them by visual inspection.
To ensure the correct wheel nut tightening torque and corresponding clamping load is
achieved the wheel nut or wheel cone MUST be lubricated with Optimol TA grease
EVERY time the wheels are changed.
Also, if wheel guns are used, the manometer on the compressed air bottles should be
calibrated to ensure that the tightening torque of 500-520 Nm (368.8 – 383.5 lb-ft)
is correct.
Proceed as follows in order to prevent the wheel nuts from settling:
Tighten the new part 3 to 4 times using an impact wrench ( 500
–
520 Nm ) (369-384 ft-lb),
then loosen and re-grease it.
WARNING