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 split, steel-backed, copper- lead alloy type. The
bearing caps are joined to the connecting rod
upper and lower halves are interchangeable
at a 45 degree angle to facilitate removal of
when new, but must be replaced as a set.
the piston and connecting rod assemblies through
the top of the cylinder bores. The connecting
rods and caps are marked for identification
and are replaced only as an assembly. A bronze
lined, steel-backed, bushing-type bearing is
The pistons are aluminum- alloy, die cast
pressed into the piston pin end of connecting
castings that are cam ground and tapered to
rod. The bushing is diamond bored for precise
provide an accurate fit in the cylinder bore at
piston pin fit.
operating temperatures. A spherical shaped
combustion chamber (fig. 13) is machined in
12. CONNECTING ROD BEARINGS
the dome of the piston. Each piston accom-
The six connecting rod bearings are the
modates three compression rings and one oil
,
9
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