MOTO GUZZI Daytona RS Workshop Manual page 97

Check parallelism of the axes.
Before assembling the connecting rods, check the
quadrature, i.e. check that the little-ends and the big
ends of the connecting rods are parallel and coplanar.
Any minimum deformities can be corrected by
adjusting the connecting rod stem.
The maximum parallelism and coplanar error of the
two axes of the little-end and the big end measured
at the distance of 200 mm must be ±0.10 mm.
FITTING OF THE CONNECTING RODS ON THE
DRIVE SHAFT
The assembly clearance between the bearing and
the connecting rod pin ranges from a minimum of
0.022 mm to a maximum of 0.064 mm.
The clearance between the connecting rod shim
adjustment and those of the crankshaft is 0.30÷0.50
mm. Fit the connecting rods on the crankshaft, tighten
the nuts on the caps with a dynamometric wrench
using a tightening torque of 8,5÷9,3 kgm.
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 table).
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 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
// 0.10 X Y
Y
Y
Torque loading screw
Kgm 8,5 ÷ 9,3
Diameter of main journal on timing system side
NORMAL
PRODUCTION
mm
37.975
37.959
x
x
Note: Accurately determine the
parallelism of axes
X-X/Y-Y = 0,100 over 200 mm
11-82
UNDERSIZED BY mm
0.2 0.4 0.6
37.775 37.575 37.375
37.759 37.559 37.359
11-83
95