5-88
CRANKSHAFT
ENG
CAUTION:
EAS00395
CHECKING THE CRANKSHAFT
1. Measure:
S crankshaft runout
Out of specification ! Replace the crank-
shaft.
Crankshaft runout
Less than 0.03 mm (0.0012 in)
2. Check:
S crankshaft journal surfaces
S crankshaft pin surfaces
S bearing surfaces
Scratches/wear ! Replace the crankshaft.
CHECKING THE CRANKSHAFT JOURNAL
BEARINGS
1. Measure:
S crankshaft-journal-to-crankshaft-journal-
bearing clearance
Out of specification ! Replace the crank-
shaft journal bearings.
Crankshaft-journal-to-crankshaft-
journal-bearing clearance
0.034 X 0.058 mm
(0.0013 X 0.0023 in)
Do not interchange the crankshaft journal
bearings. To obtain the correct crankshaft-
journal-to-crankshaft-journal-bearing clear-
ance and prevent engine damage, the crank-
shaft journal bearings must be installed in
their original positions.
a. Clean the crankshaft journal bearings,
crankshaft journals, and bearing portions of
the crankcase.
b. Place the upper crankcase upside down on a
bench.
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