Porsche 911 GT3 Cup 2008 Technical Handbook page 26

Separate input shaft
Pull the input shaft out of the mounting plate.
Limited slip differential:
The limited slip differential has a basic locking torque of 40%
(power) and 60% (braking). (Locking rate dynamic).
Notice:
In the event of repair work being carried out always replace
the complete clutch pack.
Change individual plate's is not permitted.
When reassembling the differential smear all the friction faces,
pressure plates and the axles with gearbox oil.
To check the basic locking torque, a flange with two bolts
should be mounted in a vice; the second flange with the connection piece should be fitted to the differential.
Turn the diff with a torque wrench. A basic torque of between
90 Nm and 180 Nm should be achieved.
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