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ENGINE AR-COMPLETE 1399915 - Caterpillar

1399915 ENGINE AR-COMPLETE Caterpillar parts C-10 ENGINE
Alternative (cross code) number:
Caterpillar 1399915 ENGINE AR-COMPLETE

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Compatible equipment models: 1399915:

TRUCK ENGINE  C-10   Caterpillar
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The eight major mechanical components of the basic engine are the following parts:
Cylinder block
Cylinder head
Connecting rods
Crankshaft pulley
Timing gear case and gears
CamshaftCylinder Block
Illustration 1 g02149272
Typical example
The cast iron cylinder block for the four cylinder engine has four cylinders which are arranged in-line. The cylinder block is made of cast iron. The cylinder block provides support for the full length of the cylinder bores. The cylinder bores are machined into the block.The cylinders are honed to a specially controlled finish in order to ensure long life and low oil consumption.The cylinder block has five main bearings which support the crankshaft. Thrust washers are installed on both sides of number 3 main bearing in order to control the end play of the crankshaft. The thrust washers can only be installed one way.Passages supply the lubrication for the crankshaft bearings. These passages are machined into the cylinder block.Cooling passages are cast into the cylinder block in order to allow the circulation of coolant.The cylinder block has a bush that is installed for the front camshaft journal. The other camshaft journals run directly in the cylinder block.The engine has a cooling jet that is installed in the cylinder block for each cylinder. The piston cooling jet sprays lubricating oil onto the inner surface of the piston in order to cool the piston.A Multi-Layered Steel (MLS) cylinder head gasket is used between the engine block and the cylinder head in order to seal combustion gases, water, and oil.Cylinder Head
Illustration 2 g02466936
Typical example
(1) Valve keepers
(2) Valve spring retainer
(3) Valve spring The engine has a cast iron cylinder head (5). The inlet manifold is integral within the cylinder head. There are two inlet valves and two exhaust valves for each cylinder. Each pair of valves (6) are connected by a valve bridge that is controlled by a pushrod valve system. The ports for the inlet valves are on the left side of the cylinder head. The ports for the exhaust valves are on the right side of the cylinder head. The valve stems move in valve guides that are pressed into the cylinder head. There is a renewable stem seal (4) that fits over the top of the valve guide. The valve seats are replaceable.Pistons, Rings, and Connecting rods
Illustration 3 g03728612
Typical example
The pistons (9) have a Quiescent or a Re-entrant combustion chamber in the top of the piston in order to provide an efficient mix of fuel and air. The piston pin (8) is off-center in order to reduce the noise level. The position pin (8) is retained in the correct position by two circlips (3).The pistons have two compression rings (1) and an oil control ring (2). The groove for the top ring has a hard metal insert in order to reduce wear of the groove. The piston skirt has a low friction coating in order to reduce the risk of seizure when the engine is new.The correct piston height is important in order to ensure that the piston does not contact the cylinder head. The correct piston

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