Benelli TRK 502 Service Station Manual

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
12
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

Benelli TRK 502 Specifications

General

Displacement	500 cc
Transmission	6-speed
Fuel Tank Capacity	20 liters
Seat Height	800 mm
Wet Weight	235 kg
Bore x Stroke	69 mm x 66.8 mm
Compression Ratio	11.5:1
Clutch	Wet multi-plate
Frame	Steel trellis
Wheelbase	1505 mm
Ground Clearance	190 mm
Max Power	47.6 hp (35 kW) @ 8500 rpm
Max Torque	46 Nm @ 6000 rpm
Front Suspension	50 mm upside-down fork
Front Brake	Double floating discs, 320mm, 4-piston calipers
Rear Brake	Single 260 mm disc
Fuel System	Electronic Fuel Injection (EFI)
ABS	Dual-channel ABS
Front Tire	120/70 R17
Rear Tire	160/60 R17
Engine Type	Liquid-cooled, four-stroke, parallel twin cylinder, DOHC, 4 valves per cylinder