Porsche 2012 911 GT3 CUP Technical Manual page 76

5.10.5. Setting the 4-point bearing preload
5.10.6. 4 th gear setting dimension
1. Refit the previously removed washer (if not damaged) in the gearbox
housing
2. Position the drive shaft including 4-point bearing without washer H2 in
the gearbox housing
3. Position the pre-mounted clamp plate (selector barrel with SW1, drive
shaft) on the gearbox housing and tighten bolts
4. Determine the axial play of the 4-point bearing
The 4-point bearing requires an axial preload of 0.01 – 0.07 mm (try to
achieve the average value 0.04 mm)
The value for setting washer H2 is calculated as follows:
Thickness H2 = axial play 4-point bearing + 0.04 mm
Example: Measured play: 1.06 mm
H2 = 1.06 mm + 0.04 mm = 1.10mm
Place the H3 washer on the 4-point bearing
Only use ONE spacer! Two spacers must not be used to achieve
the dimension 44.35 mm (see gearbox scheme drawing)!
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