ADAPTER-CORNER 8J6397 - Caterpillar

Cylinder Block, Liners And Cylinder Heads
The cylinder block is a one-piece casting of heavily ribbed, weldable gray iron alloy. The air inlet plenum runs the full engine length, providing even air distribution to the cylinders.The main bearing caps are fastened to the cylinder block with two studs per cap. The studs are hydraulically tensioned. Each main bearing cap has two saddle bolts, one through each side of the cylinder block. The saddle bolts are used in order to prevent the movement of the main bearing cap. The saddle bolts are also used in order to add stiffness to the lower area of the cylinder block.The cylinder liners are made from high alloy iron castings. The cylinder liners are induction hardened and jacket water cooled over the liners full length. The cylinder liners can be removed for replacement. The cylinder liner seats on the top face of the cylinder block. The cylinder liner is piloted below the liner flange at the top. The cylinder liner is sealed with an O-ring seal at the top and three O-ring seals at the bottom. The O-ring seals provide a seal between the cylinder liner and the cylinder block.The engine has a separate cylinder head for each cylinder. Each cylinder head contains the following components: two inlet valves, two exhaust valves, four replaceable valve seats and one gas inlet valve. The inlet and exhaust valves move in replaceable valve guides which are pressed into the cylinder head.The valves are actuated by the following components: roller type cam followers, pushrods, rocker arms and bridge and guide dowel assemblies. Each pair of inlet and exhaust valves are actuated by separate bridges which contact the rocker arm.A third lobe on the camshaft moves the cam follower, the pushrod and the rocker arm that operates the gas inlet valve.Combustion gas is sealed by a rectangular cross section steel ring gasket that is located between the cylinder liner flange and the head. Rubber O-ring seals are used in order to seal air, water and oil connections between the cylinder head and cylinder block. The seals are located in two plates for each cylinder.Each cylinder head is fastened to the cylinder block by four studs and four nuts. These studs are hydraulically tensioned. The nuts are turned down by hand and the hydraulic tension is released. The entire stud load is carried by the combustion seal ring gasket.
Illustration 1 g00307567
Right Side Of G3606 Engine (1) Covers (for the camshaft). (2) Covers (for the inspection of the connecting rod bearings and the main bearings.Covers (1) allow access in order to inspect and perform maintenance of the camshafts, the valve lifters and the valve lifter guides.Covers (2) allow access in order to inspect and perform maintenance of the crankshaft, the connecting rods, the piston cooling jets and the main bearings.Pistons, Rings And Connecting Rods
The piston is a two-piece unit. A steel crown is held to a forged aluminum body by four studs and nuts. An inner cooling chamber