29
Design and Function
Main and crankshaft bearings
The main and crankshaft bearings consist of indium
plated leaded bronze lined steel shells. The bearings
are precision manufactured and ready for installation.
Three under-sizes can be obtained as replacement
parts. The thrust washers for the crankshaft axial
bearings are available in three over-sizes.
Connecting rods
The con rods are of I section and are drilled for pres-
sure lubrication to the gudgeon pin. Late-model con
rods have a trapezoidal gudgeon pin end. Early and
late model con rods can be mixed, however.
The gudgeon pin bushings are steel with bronze alloy
coatings.
Flywheel
The flywheel is screwed to a flange at the rear end of
the crankshaft. It is statically balanced and fully ma-
chined. The starter ring gear is pressed onto the fly-
wheel.
Vibration damper
The vibration damper consists of a hermetically
sealed housing in which a rectangular cross section
flywheel mass is located. The flywheel mass (damper
ring) has a central bearing on a bushing and is sur-
rounded on all other sides by a viscous fluid (silicon).
Vibration damper
1
Crankshaft
5
Bushing
2
Hub
6
Flywheel mass
3
Cover
7
Housing
4
Fluid cavity
Содержание 300 Series
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Страница 96: ...7741725 1 English 10 2001 ...