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CAC Gasoline Engine Maintenance And Servicing Manual 14
1.Cylinder block:Made from gray cast iron. Without bibcock. Without cylinder liner.5 main bearing seats. Main Intermediate bearing anti-thrust. Main bearing caps are retained by 2.Cylinder head:Made from aluminum alloy. Intake and exhaust valve seats and valve guides strutting.6 camshaft supports. Without camshaft bushing. with fuel pump, Push rod and 3.Piston:made from eutectic aluminum silicon. Anti-expansion steel-strutted skirt. Ellipse head and skirt. Cone head. Barrel skirt. 4.Piston ring:First compression ring of ductile cast iron. With excircle sprayed molybdenum. Ground ring with barrel surface. 5.Piston pin:Low carbon steel. Surface carbonizing and quenching. Semi-floating structure(Interference fit with small end of connecting rod. Clearance fit with piston pin hole. 6.Connecting rod:Forged steel. Flat insection. Without small end bushing. Connecting rod stem and cover are retained by 2 spring dowels. Piston and cylinder block is lubricated by oil spray 7.Crankshaft:4 balance weight. Ductalloy. Normalizing treatment. made of tin&aluminium duplex metal. Two pieces of thrust washer. They are mounted in 9.Flywheel:It is made of ductalloy. May be fitted with 190 and 210 clutch. Casted with crankshaft speed signal disk. 10.Camshaft:It is made of alloy cast iron. Cam and fuel pump eccentric cam high frequency quenching treatment. 5 supports. Camshaft thrust spacer is made from low carbon steel. 11.Rocker arm:Low carbon steel、Stamping. Surface carbonitriding. Rocker arm stud of 10.9 grade. 12.Hydraulic lifting rod:The surface contacting cam is quenched. The contact face with rocker arm is made of low carbon steel. Surface carbonitriding,Both contact face are circular-arc. 13.Intake valve seat:It is made of alloy cast iron. quenched,With conical surface angle 45°.With large nest seat in the valve head for Exhaust valve:4Cr9Si2-21-4N. With conical surface angle 45°.With smaller end quenched. 17.Gear:Made from iron base powder metallurgy. |