General Description Of Engine Components; Cylinder And Crankcase; Main Bearing Cover; Crankshaft - Robin EH09D Service Manual

4. GENERAL DESCRIPTION OF ENGINE COMPONENTS

4-1 CYLINDER AND CRANKCASE

The cylinder and crankcase is a single piece alu-
minum die-casting.
The cylinder liner, made of special cast iron, is
molded into the aluminum casting.
The crankcase has a mounting surface on the out-
put shaft side, where the main bearing cover is
attached.

4-2 MAIN BEARING COVER

The main bearing cover is an aluminum die-cast-
ing with thick reinforcing walls and ribs, which is
mounted on the output shaft side of the crank-
case.
Remove the main bearing cover to inspect the in-
side of the engine.
Pilots and bosses are machined on the cover for
direct mounting of the engine onto rammers.

4-3 CRANKSHAFT

The crankshaft is forged carbon steel, and the
crank pin is induction-hardened.
The output end of the shaft has a crankshaft gear
that is pressed into position.
OIL GAUGE
- 7 -
Fig. 4-1
Fig. 4-2
Fig. 4-3