15-11
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CRANKSHAFT/PISTON/CYLINDER
CRANKPIN BEARING
Do not interchange the bearing inserts. They must be
installed in their original locations or the correct bearing
oil clearance may not be obtained, resulting in engine
damage.
Remove the crankshaft (page 15-5).
BEARING INSPECTION
Check the bearing inserts for unusual wear or peeling.
Check the bearing tabs for damage.
OIL CLEARANCE INSPECTION
Clean the mating surface of the connecting rod and
crankpin bearing cap with cleaning solvent and blow
them with compressed air.
Clean off any oil from the bearing inserts and crankpins.
Carefully install the crankshaft onto the upper
crankcase.
Set the connecting rods onto the crankpins.
Put a strip of plastigauge [1] lengthwise on each
crankpin avoiding the oil hole.
Do not rotate the crankshaft during inspection.
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