PIAGGIO MP3 500 i.e. SPORT, Service Station Manual

Page: 200 / 432

- If higher values than those prescribed are meas-
ured, replace the linings.
Check the size of the sealing ring opening:
Compression ring: 0.15 ÷ 0.35 mm. Max. value: 0.5 mm
Scraper ring: 0.25 ÷ 0.50 mm. Max. value: 0.65 mm
Scraper ring: 0.25 ÷ 0.50 mm. Max. value: 0.65 mm
Rings/slots coupling clearances:
Carefully clean the sealing rings housings.
Check coupling clearances by placing a thickness
gauge between the ring and the slot as shown in
the figure.
Top ring: Standard coupling clearance:
0.01÷0.06 mm
Maximum clearances allowed after use: 0.10
mm
Middle ring: Standard coupling clearance:
0.02÷0.07 mm
Maximum clearances allowed after use: 0.10
mm
Oil scraper ring: Standard coupling clear-
ance: 0.01÷0.06 mm
Maximum clearances allowed after use: 0.10
mm
If clearances measured exceed the maximum val-
ues specified in the table, the piston should be
replaced by a new one.
Removing the piston
- Install piston and wrist pin onto the connecting
rod, aligning the piston arrow the arrow facing to-
wards the exhaust.
Engine
MP3 500 i.e. SPORT Business_LT_ ABS-ASR_EU_USA (2015)
ENG - 200