IMPORTANT NOTE ABOUT CRANKCASE SERVICING
NOTE: Read through this paragraph before begin-
ning work, then determine the reassembly sequence
so that the crankcase halves can undergo a single
heat treatment for the replacement of the bearings.
If necessary, use drifts of suitable diameter to remove the
bearings. Remove the reference bushings and place the
crankcase halves on a flat surface. The prevent damage to
the crankshaft sealing surfaces, the support surface should
be large enough to allow the crankcase sealing surfaces to
rest completely on it. A wooden surface is recommended
for the purpose. If a suitable press is unavailable, fit the
bearings and the seal rings with the greatest care using
suitable tools. Cold-working bearings fall almost sponta-
neously into their respective seats when the crankcase hal-
ves reach a temperature of 150° C.
If the bearings are not firmly in place after the crankcase
has cooled down, the subsequent heating would probably
cause them to turn in their seats. In that case the crankca-
se will have to be replaced.
29
6 - Motore Release 01 Date 09/2007
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