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section
N 9.2
2111098/1098S - M.Y. 2007 - edition 00
Engine
Shimming the gearbox selector drum
A similar procedure is used to establish the total shim thickness “ST” for the gearbox selector drum;
Given that:
LT1 = right-hand side crankcase depth
LT2 = left-hand side crankcase depth
LT = gearbox selector drum shoulder.
Given that endfloat should be 0.10 to 0.40 mm
and taking the mean optimal value of 0.25 mm.
This gives: ST=LT1+LT2-LT-0.25.
Given that ST=ST1+ST2
we obtain ST1=LT1-59-0.125, so that ST2=ST-ST1.
Notes
The method described for the crankshaft can also be used to calculate the shim thicknesses for the gear shafts.
ST2
ST1
LT1
LT2
LT
Contact face
crankcase halves
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