MOTO GUZZI Daytona RS Workshop Manual page 65

CRANKSHAFT
Examine the surfaces of the main journals; if they are grooved or ovalized, the journals must be ground (following
the undersize tables), and replace the flanges complete with the main bearings.
The main bearings undersizing scale is as follows: 0.2-0.4-0.6 (see tables on page 64).
The assembly clearances are the following:
■ between main bearing and journal timing side 0.028÷0.060 mm
■ between main bearing and journal flywheel side 0.040÷0.075;
■ between bearing and connecting rod pin 0.022÷0.064 mm.
When grinding the crankshaft journals it is necessary to maintain the value of the connecting throw on the
shoulders that is: 2÷2.5 mm for the connecting rod pin, 3÷3,2 mm for the main journal on the flywheel side and
1.5÷1.8 mm for the main journal on the timing system side.
Diameter of main journal on flywheel side
NORMAL
PRODUCTION
mm
53.970
53.951
UNDERSIZED BY mm
0.2 0.4 0.6
53.770 53.570 53.370
53.751 53.551 53.351
Diameter of main journal on timing system side
NORMAL
PRODUCTION
mm
37.975
37.959
UNDERSIZED BY mm
0.2 0.4 0.6
37.775 37.575 37.375
37.759 37.559 37.359
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