Chapter 2 Basic Engine
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3,4JH3(B)(C)E
(2)
Bending
of
the
crankshaft
Support the crankshaft with V •blocks at both ends
of
the journals, Measure the deflection
of
the center jour-
nal with a dial gauge while rotating the crankshaft to
check the extent
of
crankshaft bending.
Dtal gauge
Bend
Deflection
mm
Crankshaft bend
Less
than
0.02
mm
(3)
Measuring
the
crank pin and journal
Measure the extent of journal wear (roundness, taper).
Regrind
it to the proper shape if it is within the outer
diameter limit, and replace
if
not.
I
Crank pin
Outside dia,
Crank pin and bearing oil clearance
Outside dia,
Crank journal
Crank journal and bearing
oil clearance
Fillet rounding of crank pin and journal
Printed
in
Japan
HINSHI-H!\009
2-19
Crank pin
mm
Standard
Wear
limit
f
47.952~67.962
47.91
0.038~0.068
0.25
49.952~-49.962
49.75
0.036~0.068
0,15
3.5D0~3.8D0
~-
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