Crank Assy is an abbreviation for "crankshaft assembly." The crankshaft assembly is an essential component in an internal combustion engine that converts the reciprocating motion of the pistons into rotational motion. It consists of the crankshaft and all its associated parts, such as bearings, connecting rods, and flywheel. The crankshaft assembly plays a crucial role in the engine's operation, ensuring smooth and efficient power delivery.Example sentence: "The mechanic diagnosed the issue with the engine to be a faulty crankshaft assembly, which would need to be replaced."