CAC Gasoline Engine Maintenance And Servicing Manual
38
Installation of the piston and rod assembly：
Apply engine oil on piston, piston ring and cylinder bore.
Stagger 120°among the first compression ring, the second ring
and oil ring cotter, then install piston rod into cylinder bore. push
the piston an rod assembly by hammer into the cylinder bore.
——Apply engine oil on the connecting rod bushing. Mount
connecting rod cap. Retain connecting rod body and cap with two
elastic retaining pins.
——Tighten connecting rod bolt to 30—36Nm. apply engine oil
on the bolt head and bolt threads before installation.
——The side play of big end is 0.092—0.268mm。
【10】The removal and installation of flywheel assembly and
carrier assembly of real
crankshaft oil seal
1). The removal and installation of flywheel assembly
removal：
——Remove six M10 bolts and replace bolts.
——Remove flywheel. Check if there is crack in the
surface of clutch plate. Check ring gear teeth for
crack ,wear, pitting .
Installation：
——The press fit clearance of gear ring and flywheel is
0.48—0.86mm. The gear ring should be pressed when
heated to 300℃.
——The retaining hole of flywheel and the retaining
journal of crankshaft is of clearance fit. clearance is
0.012—0.074mm. Try to push it lightly after centering.
Don’t strike the crankshaft by the hammer.
——During assembling, align the installation mark hole
and fabrication hole on the crankshaft. Screw in 6 new
bolts by hand. Bolts should have sealant on them.
Tightening torque is 82—92Nm.
Fig.56
Fig.57
assembly
pin
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