Changing Gear; Gearbox Disassembly - Porsche 911 GT3 Cup 2008 Technical Handbook

Changing gear:

Gearbox maintenance:
The car is equipped with a six-speed sequential gearbox, which
means that all gears are selected in sequence. Up shifting is made by
pulling the gear lever rearwards and down shifting by pushing the
gear lever forwards. The shift mechanism is connected to the
gearbox by a push/pull shift cable.
A gear lever force sensor is integrated in the gear knob, which
activates an ignition cut, and therefore a cut in propulsion, when
pulled. This allows full power up shifts to be made.
Attention: It is absolutely necessary to change gear as quickly
as possible. Shifting gear too slowly can cause an increase in
wear or damage to the dog teeth.
Due to wear, always blip the throttle and use the clutch when
down shifting.
The following work should be carried out after a total running time of
approximately 2000 km:
Check gear ratio pairs (gear teeth and dog teeth)
•
Check the dog rings.
•
• Check the gear hub and gear roller bearings for signs of wear and
pitting.
• Check the oil for signs of metallic debris.
• Check the crown wheel and pinion for pitting
• Replace the pinion bearing (4-point bearing)
• Replace the oil filter
• Replace the shift cable
Note: The gearbox disassembly and assembly instructions are
described in this brochure. These give you the possibility to replace
damaged or worn parts. In the event of more comprehensive
damage, which requires the replacement of castings, we recommend
that this work is carried out by Porsche Motorsport. Intricate
measurement and adjustment work, which is not described in these
instructions, is required to ensure that the gearbox works perfectly.
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