Benelli TRK 502, Service Station Manual

Page: 298 / 408

5 - 45
CRANKCASE
INSTALLATION OF CONNECTING ROD AND CONNECTING ROD BEARING SHELLS
NOTE:_________________________________
Do not mix up the connecting rod bushings and the con-
necting rods. To achieve the correct clearance between the
connecting rod support and the big end main bearing shells
and to prevent engine damage, the big end bearing shells
must be installed in their original positions Fig. E
According to the bushing type, make the envisaged couplings,
see table:
CONNECTING ROD MAIN BEARING SHELL
STD COLOUR THICKNESS
A Green 1.503~1.506 mm
B Blue 1.506~1.509 mm
C Yellow 1.500~1.503 mm
Ø std seat A green
Ø 33mm (+0.008/0)
Ø std seat B blue Ø 33 mm (+0.008/+0.016)
Ø std seat C yellow Ø 33 mm (-0.034/-0.041)
According to the class, shown on the side of the connecting rod
Fig. F combine the different types according to the table below:
SELECTION TABLE
Connecting rod internal Ø
1 2
33.000 ~
33.008 mm
33.008 ~
33.016 mm
Crank pin
external Ø
A Ø 30 A (yellow) B (green)
B Ø 30 B (green) C (brown)
After all of these checks, install the fastening screws (6) Fig. G
and tighten to the following torque:
T.R.
Torque 25 N*m
NOTE:_________________________________
Every time that the big end is installed, it is necessary to
replace the fastening screws.
K4/
102600
E
A B
C
K4/
102600
F
K1
G
6
6
-0.034
-0.041
-0.041
-0.048
+0.003
0
-0.006
-0.003
-0.006
-0.003
-0.009
-0.006
COPY - Moto GB - Grant Martland - grantmartland@motogb.co.uk