Benelli TRK 502 Service Station Manual

5 - 37
PISTONS
The following procedure is applied to all elastic clips (1).
Check:
• the absence of lines and traces of forcing on each clip Fig.
A.
If outside specifi cation, replace the relevant clips and pistons.
NOTE:_________________________________
Before measuring side clearance between the piston clips,
remove any carbon deposits from the piston clips and
grooves.
Measure:
• the side clearance between piston clips, using a thickness
gauge Fig. B.
If outside specifi cations, replace the piston and the relevant clips
all together.
Clip Piston clip side clearance.
Top clips 0.04-0.08 mm
Clips 0.05-0.09 mm
Measure:
• The thickness of the top clip.
• The thickness of the second clip.
See Fig. C.
Clip Piston clip thickness
Top clips 0.8 -0.01/-0.03 mm
Clips 0.8 -0.02/-0.04 mm
A
B
C
PISTON RINGS CHECK
1
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