Connecting Rod And Piston; Piston Rings; Camshaft - Robin EH09D Service Manual

4-4 CONNECTING ROD AND PISTON

The connecting rod is an aluminum alloy die-cast-
ing and its large and small ends function as bear-
ings.
The piston is an aluminum alloy casting, and car-
ries two compression rings and one oil ring.

4-5 PISTON RINGS

The piston rings are made of special cast iron.
The profile of the top ring and the second ring are
shown in the illustration.
The oil ring is designed for better sealing and less
oil consumption.

4-6 CAMSHAFT

The camshaft is made of special cast iron, and
camshaft and gear are cast together in one piece.
Both sides of the shaft fit into the plain bearings
on the crankcase and main bearing cover.
Model: EH09D
TOP EH09D
1
①
EH12-2D
RING
② EH09D
SECOND
2
RING
③
EH12-2D
EH09D
OIL
3
RING
EH12-2D
Fig. 4-5
- 8 -
Model: EH12-2D
Fig. 4-4
BARREL
TAPER
TAPER
UNDER CUT
CUTTER RING
CUTTER RING WITH
COIL EXPANDER
Fig. 4-6