Porsche 2012 911 GT3 CUP Technical Manual page 74

3. Determine the dimension of the old selector barrel between the
3rd/4th track
4. Set the new selector barrel in position and determine the dimension
as above.
5. Measure the dimension between the base of the axial bearing,
including spacer, of the old selector barrel to the jig.
6. Fit the new selector barrel to the jig and check the dimension as
described above.
7. Calculate the spacer required, place in the new selector barrel and
check the dimension.
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