Crankshaft Inspection - Sym Mio 50 Service Manual

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11. Crankcase / Crankshaft

Crankshaft Inspection

Measure left and right clearance of connecting rod
big end.
Service limit: Replace when it is more than
0.55 mm.
Measure the radical clearance of the big end at
the vertical directions.
Service limit: Replace when it is more than
0.05 mm.
Place the crankshaft onto a V-block and measure
run-out of the crankshaft with dial gauge.
Service limit: Replace when it is more than 0.10
mm.
90 mm
60 mm
Bearing Inspection
Clearance
Rotate the bearing with fingers and make sure the
bearing can be rotated smoothly and quietly.
Clearance
Check if the inner ring is connected onto the
crankshaft tightly.
Replace crankshaft as a set when noise or
looseness is detected.
11-5