Cylinder/piston assemblies
file:///D|/Manuales/Para%20recolocar/MOTOS/DUCATI/DUCATI/M796/wsm/EN/M796_ABS_11_9_5.71.1.html[11/12/2015 18:40:47]
this reason, the piston (9) should be inserted in the cylinder without piston rings fitted and then place the piston ring to
be checked on top of the piston.
Measure the piston ring gap.
Top and second piston ring (nominal): 0.20 to 0.40 mm.
Wear limit: 0.80 mm.
Oil control ring (nominal): 0.30 to 0.60 mm.
Wear limit: 1.0 mm.
Refitting the cylinder/piston assembly
If a new cylinder/piston assembly is to be fitted, make sure that the piston and cylinder are of the same size class.
The letter indicating the cylinder size class is stamped on the cylinder-head mating face; the piston size class letter is
stamped on the crown in between the two recesses.
If the pistons have been separated from their cylinders, before reassembling these components, position the piston ring
gaps at 120° from one another (the markings must always face the piston crown).
Use a universal tool to carefully insert the piston into the cylinder (first lubricate the inside of the cylinder with engine
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