Fantic Motor TL 250, Руководство по ремонту

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CHAPTER 18
ENGINE
WORKSHOP MANUAL
TL 250
Measure the outside diameter of the gudgeon pin.
Service limit value: 15.99 mm
Measure the piston-to-gudgeon pin clearance.
Service limit value: 0.025 mm
18.5.5 Install the piston rings
Clean the piston ring grooves.
Install the piston rings.
Do not mix up the top and 2
nd
piston rings. Install the top
and 2
nd
piston rings with the markings facing the piston
head. The piston rings should be able to turn freely once
installed.
The gap in the oil ring should line up correctly with the gaps in
the spacers.
Install the spacers before the oil ring, installing the side rails last.
18.5.6 Install the piston
Install the piston, the gudgeon pin and the new clips.
Install the piston with the side marked "
◄
" facing the
exhaust. The gudgeon pin clip end gap should face down.
Install new clips if they are badly misshapen.