Rev no.01/ page 35of 140
Bearing:
Clear bearing with solvent and lubricate
With engine oil before inspection.
Rotate the bearing inner race by finger to
inspect for abnormal play, noise and smooth
rotation while the bearings are in the
crankcase. Replace the bearing if there is
anything unusual.
Damage to the lip of the
oil seal may result in leakage of the fuel-air
mixture or oil. Inspect
for damage and be sure to replace seal is
found.
.
Crankshaft:
Crankshafts run out:
Support the crankshaft with v blocks as
shown, with the two end journals resting on
the blocks.
Position the dial gauge, as shown, and rotate
the crankshaft to read the run out as shown.
Correct or replace the crankshaft if the run
out is greater than the specified limit.
Service limit
0.05mm (0.002 in )
Excessive crankshaft run out is often
responsible for abnormal engine vibration.
Such vibration reduces the engine life.
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