Crankshaft And Crankcase Inspection; Crankshaft And Crankcase Installation - Carter Talon 150 FX Series Service Manual

CRANKSHAFT AND CRANKCASE INSPECTION

Replace the whole set of the crankshaft if serious wear is found while inspecting. Measuring the
axial trend clearance of the big end of the connecting rod.
When measuring, put the large end of the connecting rod close to the crank, and insert the feeler
gauge between the other side and the crank, for the correct end play.
Measure the radial trend (X,Y) clearance of the big end of the connecting rod.
Measure the main shaft journal jump of the crankshaft.
If the crank journal jump is too much it will cause the engine to shake abnormally, and shorten the
lift of the engine, so it must be examined carefully when inspecting.
Examine if there is any loose, or unusual sound when the crank journal bearing turns, if there is,
the whole set should be changed.
After cleaning the crankcase, inspect if there is any damage.
Inspect if the joint face of the crankcase is smooth and clean, and notice if it will affect the sealing
performance between the left and right crankcase while reassembling.
After the above inspection, if the crankcase has some surface damage, use oilstone to refinish it.
If damage is too severe, replace the cover.
Because the right and left crankcase axle hole must be concentric, they
should be replaced at the same time.

CRANKSHAFT AND CRANKCASE INSTALLATION

• Mount the crankcase oil seal.
• Put the cam chain into the left crankcase.
• Put the crankshaft into the left crankcase.
Pay attention to avoid damaging the oil seal with the cam chain.
Service Limit
Service Limit
Service Limit
0.55mm
0.05mm
0.10mm(A=90)
0.10mm(B=105)
13