MOTO GUZZI CALIFORNIA JACKAL Werkstatt-Handbuch Seite 385

Main bearing journal diameter, flywheel side
A
PRODUCTION
STANDARD mm
52.970
53.951
B
Main bearing journal diameter, timing system side
PRODUCTION
STANDARD mm
C 37.975
37.959
D
E
F
G
H
I
L
M
N
O
P
70
UNDERSIZED BY mm
0.2 0.4 0.6
53.770 53.570 53.370
53.751 53.551 53.351
UNDERSIZED BY mm
0.2 0.4 0.6
37.775 37.575 37.375
37.759 37.559 37.359
C
RANKSHAFT
Examine the surfaces for the main bearing journals; if
they show signs of grooving or ovality, it is necessary to
recondition the pins (observing the undersize tables),
and to replace the flange together with the main bearing
journals.
The undersize table for the main bearing journals is the
following: 0,2-0,4-0,6.
The assembly backlashes are the following:
• 0.028÷0.060 mm between the bearing and the main
bearing journal, distribution side;
• 0.040÷0.075 mm between the bearing and the main
bearing journal, flywheel side;
• 0.022÷0.064 mm between the bearing and the
connecting rod pin.
IMPORTANT
When reconditioning the crankshaft pins, it is
necessary to make sure that the union's radius
value on the shoulders is:
2÷2.5 mm for the connecting rod pin,
3÷3.2 mm for the main bearing journal, flywheel
side
1.5÷1.8 mm for the main bearing journal, timing
system side.
E
NGINE