Crankshaft Inspection - Sym RS-50 Service Manual

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9. CRANKCASE/CRANKSHAFT

Crankshaft Inspection

Measure the clearance of connecting rod big end.
Service limit: 0.60 mm
Measure the radial clearance of connecting rod big
end at X-Y directions as diagram show.
Service limit: 0.04 mm
Place the crankshaft on a V-block, measure
run-out points A and B of the crankshaft with dial
gauge.
B
A
Service limit: A: 0.10 mm
B: 0.10 mm
70mm
37mm
Check the crankshaft bearing by means of turning
it with hand. If any noise and bigger clearance
Clearance
are detected, replace the bearing with new one.
Clearance
Lateral Radial
9-4