Fantic Motor TL 250, Руководство по ремонту

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CHAPTER 18
ENGINE
WORKSHOP MANUAL
TL 250
18.5.4 Inspecting the piston and rings
Remove the piston rings:
Take care not to damage the piston rings during removal.
Measure the piston ring-to-groove clearance.
Service limit value:
Top ring: 0.08 mm
2
nd
ring: 0.08 mm
Oil ring: 0.08 mm
Check the piston for wear or cracks and check the seat for wear.
Install the ring on the cylinder.
Service limit value:
Top ring: 0.5 mm
2
nd
ring: 0.5 mm
Oil ring: 1.4 mm
Measure the inside diameter of the gudgeon pin bore.
Service limit value:
φ
16,015 mm
Measure the outside diameter of the piston 7 mm from the
base of the piston's skirt.
Service limit value:
φ
76.94 mm
Measure the cylinder-to-piston clearance.
Service limit value: 0.1 mm