Piston Pin Check - Benelli TRK 502 Service Station Manual

The following procedure applies to all piston pins.
Check:
• piston pin
If there is blue discolouration or grooves, replace the piston pin
and check the lubrication system.
Measure:
• the outer diameter of the piston pin Fig. B.
If not compliant with specifi cations, replace the pin using the
measuring tool (A).
Measure:
• the inner diameter of the piston pin bore Fig. C.
If outside specifi cations, replace the piston.
Internal bore (A)
Pin bore
5 - 36
PISTONS

PISTON PIN CHECK

Size
Ø17 mm +0.0/+0.006
B
C
A