Gearbox assembly: gearbox shafts
Inspecting the fork selector drum
To establish the clearance between fork drive pin and selector drum slot, measure their dimensions with a gauge.
If the service limit is exceeded, establish which part must be changed, by comparing the values with the values of
new components (Sect. C 1.1,
).
Also check wear on drum support pins; they must not show any signs of grooves, burrs and deformation.
Turn the drum in the casing to check the side play. If there is excessive play, change whichever part is most worn.
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