Casing unit: crankcases
When changing the needle roller bearings (
24
) and the seals (31) on the swingarm shaft, grease the bearing seats
and the seal lips with the specified grease.
Install the inner oil seal (31) with the flat surface facing the casing and against the circlip (30); outer oil seal is to be
fitted in the opposite way.
Use a suitable drift - see figure - to install seals (31) and needle roller bearings (
24
).
Check that the oilways are not clogged or obstructed.
Check centring bushes (19). If apparently distorted or loose in their seats, change them using proper tools.
When the locating bushes (19) are hard to remove from casing, use a left-hand tap to force bushes out.
Caution
Never re-use any bushes (19) that have been removed with a tap.
Overhauling the main bearings
The main bearings have offset inner races so that the balls can transmit the loads from one groove to the other along
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