All of the following components are connected to the crankshaft EXCEPT:

• A. Flywheel
• B. Oil pump
• C. Water pump
• D. Timing gear

Answer: (C)

The crankshaft serves as the main drive for several engine accessories that must rotate with the engine. The flywheel is mounted directly to the crankshaft, so it is a direct connected member that stores rotational energy and helps smooth torque. The oil pump is also driven from the crankshaft through a drive gear or shaft, delivering pressurized oil as the engine runs. The timing gear is connected to the crankshaft to synchronize the camshaft and valve timing, ensuring the valves open and close at the correct moments in relation to piston position. The water pump, on the other hand, is typically driven by a belt from the crankshaft pulley (or by the timing belt/chain in some designs) and is not directly bolted to or driven by the crankshaft itself. So it isn’t connected to the crankshaft in the same direct way as the other components.