PLUNGER AS 2Y8509 - Caterpillar

Illustration 1 g01293802
The crankshaft changes the combustion forces in the cylinder into a usable rotating force referred to as torque. A vibration damper is used at the front of the crankshaft in order to reduce torsional vibrations (twist) that can damage the engine.The crankshaft drives a group of gears on the front and on the rear of the engine. The gear group on the front of the engine drives the oil pump, the water pumps, the fuel pump, and the accessory drives.The rear gear group drives the camshaft and the accessory drives.Seals and wear sleeves are used at both ends of the crankshaft. The crankshaft is held in place by the main bearings. A thrust plate at either side of the rear main bearing controls the end play of the crankshaft.