TUBE AS-DRAIN 4N6159 - Caterpillar

Illustration 1 g00807823
(1) Crankshaft
(2) Main bearing
(3) Thrust plate Crankshaft (1) changes the combustion forces in the cylinder into usable rotating torque which powers the driven equipment.Pressurized engine oil is supplied to all main bearings (2) through drilled passages in the webs of the cylinder block. The engine oil then flows through drilled passages in the crankshaft in order to provide lubrication to the connecting rod bearings. The 3508 has five main bearings. The 3512 has seven main bearings and the 3516 has nine main bearings. Two thrust plates (3) on the sides of the center main bearing controls the end play of the crankshaft.The crankshaft drives a group of gears on the front and the rear of the engine. The front gear group drives the engine oil pump, the jacket water pump, and the accessory drives. The rear gear group drives the camshafts.
Illustration 2 g00807826
Cross sections of the crankshaft seals and wear sleeves
Seals and wear sleeves are used at both ends of the crankshaft. Engine oil is sealed by the lip seals and the wear sleeves help prevent wear on the crankshaft. The seals and wear sleeves are units that provide easy replacement and reduction of maintenance cost.
Illustration 3 g00929007
Typical example of a side view of the vibration damper
The vibration damper is bolted to the front of the crankshaft in order to reduce torsional vibrations (twist) that can damage the engine.