Chapter
2
Basic Engine
7. Crankshaft and Main Bearing
14LHA Series
7.
Crankshaft
and
Main
Bearing
The
crank pin and crank journal have been high-frequency
hardened for superior durability, and the crankshaft is
provided
with
four balance weights for optimal balance.
The
crankshaft main bearing is of the hanger type,
with
the upper metal (cylinder block side) provided
with
an oil
groove,
and
with
no oil groove on the lower metal (bearing
cap
side). The bearing cap (location cap) of the flywheel
side
has a
thrust
metal which supports the
thrust
load.
,
Balance
weight
Crank
shaft
Main
bearing metal (basic) /•
Thrust metal
Main
bearing cap (basic)
Main
bearing
bolt
7-1
Crankshaft
(1) Color check of shaft
Perform
a color check after cleaning the crankshaft,
and
replace the crank shaft if there is any cracking or
considerable
damage.
Main
bearing metal
(intermediate)
Main
bearing cap
(intermediate)
Main
bearing
bolt
2-28