What is the primary function of a torque wrench?

The primary function of a torque wrench is to apply a specific torque to fasteners. This tool is essential in ensuring that nuts, bolts, and other fasteners are tightened to the manufacturer’s specified torque settings. Proper torque application is crucial for the integrity and safety of assemblies, especially in vehicles where components need to withstand considerable forces during operation. Over-tightening could lead to thread stripping and material failure, while under-tightening might cause loose connections that can result in parts becoming dislodged during use.

The torque wrench's ability to measure and indicate the applied torque ensures that fasteners are tightened correctly, allowing for optimal performance and reliability of mechanical systems. Understanding the correct use of a torque wrench is fundamental for any technician working in the truck and transport field, as it directly affects the longevity and safety of the equipment being serviced.