Sym Quad Raider 600, Service Manual

Page: 155 / 247

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12. CRANKCASE / CRANKSHAFT
Crankshaft Inspection
Use a thickness gauge to measure left and right
clearance of connecting rod big end.
Service limit: 0.6 mm
Measure the clearance of the big end at the
vertical directions.
Service limit: 0.05 mm
Place the crankshaft on a V-block, measure
run-out of the crankshaft.
Service limit: 0.10 mm
Check crankshaft bearing
Use hand to crank the bearing to see if it moves
freely, smoothly and noiseless.
Check the inner ring to see if it links firmly on the
bearing.
If any roughness, noise and loose linkage are
detected, replace the bearing with new one.
Caution
The bearing shall be replaced in pair.
Special tool: outer bearing puller
Measure point for the crank
big end of the connecting rod.
60 mm 90 mm
Crank bearing
12-5