Sealing Rings; Removing The Piston; Specific Tooling - APRILIA SCARABEO 125 Service Manual

SCARABEO 125 - 200
NOME SIGLA
Cilindro/Pistone A
Cilindro/Pistone B
Coupling categories with cast-iron cylinder
NAME ABBREVIA
TION
Cylinder/Piston M
Cylinder/Piston N
Cylinder/Piston O
Cylinder/Piston P
Inspecting the piston rings
Specification
Compression ring (top)
Compression ring (middle)
Oil scraper ring
Top ring maximum value
Middle ring maximum value

Removing the piston

- Install piston and pin onto the connecting rod, with the piston arrow aligned facing the exhaust.
- Fit the pin retainer ring on the appropriate tool.

Specific tooling

020705Y Piston seeger ring fitting
- With the opening in the position indicated on the
tool, set the retainer ring into position with the
punch.
- Fit the pin stop ring using the plug as shown in
the figure.
NOTE
THE TOOL FOR INSTALLING THE RETAINER RINGS MUST
BE USED MANUALLY.
CAUTION
USING A MALLET TO SET THE RINGS IN POSITION MAY
DAMAGE THE RING SEATS.
CILINDRO
min max
62,970 62,980
62,980 62,990
C -
YLINDER PISTON COUPLING CLEARANCE
CYLINDER
min max
63,010 63,017
63,017 63,024
63,024 63,031
63,031 63,038

SEALING RINGS (125 / 200)

PISTONE
min max
63,000 63,010
63,010 63,020
200 ³
CM
PISTON
min max
62,958 62,965
62,965 62,972
62,972 62,979
62,979 62,986
Desc./Quantity
0.2 / 0.35 mm (0.0079 / 0.014 in)
0.2 / 0.35 mm (0.0079 / 0.014 in)
0.2 / 0.7 mm (0.0079 / 0.027 in)
0.45 mm (0.18 in)
0.45 mm (0.18 in)
Engine
GIOCO AL
MONTAGGIO
min max
0,020 0,040
0,020 0,040
FITTING
CLEARANCE
min max
0,045 0,059
0,045 0,059
0,045 0,059
0,045 0,059
ENG - 103