Question 214General Subjects - QMED

The correct answer is B) torque wrench. To tighten the bolts of a crank pin bearing to the exact tension specified by the engine manufacturer, a torque wrench is the appropriate tool to use. A torque wrench allows you to precisely control and measure the amount of torque applied to the bolts, ensuring they are tightened to the manufacturer's recommended specifications. This is crucial for ensuring the proper functioning and safety of the engine. The other options (offset box end, dial wrench, and hook spanner) are not suitable for this task, as they do not provide the precise torque control required to meet the manufacturer's specifications.