General Maintenance And Adjustments; Work On The Front Or Rear Axles - Porsche 911 GT3 Cup 2008 Technical Handbook

General maintenance and adjustments

Work on the front or rear axles

Repair
Anti-roll bar adjustment:
Changing the wheel bearings:
Centre lock wheel nut:
In the event of an accident or any other damage occurring to the
suspension, every component NOT directly affected MUST be
inspected. In this case, inspected means measured, crack
detected and replaced
wishbones, wheel carrier and suspension arms, rod-end bearings
and joints, mounting bolts and wheels).
The anti-roll bar stiffness can be infinitely adjusted by rotating the lever
arm at the end of the anti-roll bar. The M6 cap head screw on the front
face must be loosened to turn the lever arm. The maximum stiffness of
the anti-roll bar is achieved by setting the lever arm parallel with the anti-
roll bar drop link. The minimum stiffness of the anti-roll bar is achieved
when the lever arm is positioned at 90° to the anti-roll bar link. The lever
arms should be adjusted together and set equally on each side. When
rotating the lever arm do not damage the material with unsuitable tools.
Grooves or notches or any other type of damage can lead to the lever
arm braking.
When replacing faulty wheel bearings please note the following points:
Press the wheel bearing out of the upright.
Heat the upright to 110°C before fitting the new wheel bearing
Drop the wheel bearing in by hand.
The wheel bearing should be seated correctly on the bearing face of the
upright after fitting.
Tighten the wheel bearing cover to the given torque.
Check wheel bearing cover bolt torque after approximately 200
km.
Wheel nut tightening torque 460 Nm
The centre bolt and wheel nut must be cleaned regularly.
After cleaning the wheel nut re-grease the threads and mating face.
When remounting or fitting a new centre bolt, smear a small quantity of
grease on the mounting faces and the internal threads.
Tighten the centre bolt to 470 Nm torque, continue tightening till the
lugs in the safety ring lock into the grooves in the hub.
Use only 'Optimoly HT – Paste' to grease the centre lock components.
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where necessary (e.g. steering,