The bolt and nut connections in the core parts of automobile engines, chassis, etc. have strict requirements on tightening torque. For example, if the torque of the engine cylinder head bolts is insufficient, it will lead to poor sealing, air leakage, oil leakage, and even damage to the cylinder gasket; excessive torque may cause the bolts to stretch, deform, and break, causing serious mechanical failure. The torque wrench can accurately control the applied torque value so that each bolt and nut meets the manufacturer's specified standards, ensuring that the components are tightly connected and evenly stressed. When installing automobile wheels, using a torque wrench can ensure that the bolt torque of the four tires is consistent, avoiding abnormal tire wear due to uneven force, and ensuring driving safety.
It is difficult to ensure that the torque applied each time is the same when tightening bolts and nuts manually based on experience, and there are differences in the operating habits and strength of different maintenance personnel, which easily leads to maintenance risks. The torque wrench displays the torque value through scales or numbers. Maintenance personnel only need to set the value according to the standard to achieve standardized operation. Whether it is replacing brake pads, installing engine pulleys, or repairing gearbox parts, using a torque wrench can eliminate the uncertainty of human judgment, reduce secondary failures caused by improper tightening force, reduce the return repair rate, and improve the quality of maintenance services.
Correct torque tightening helps to extend the service life of automotive parts. When the torque of bolts and nuts is appropriate, the fit between components is in the best state, which can effectively reduce the loss caused by vibration and friction. For example, if the torque of the bolts and nuts of the automobile suspension system is inaccurate, the components will accelerate wear due to abnormal force during driving, shortening the service life of the suspension system. The use of torque wrench for precise tightening can ensure the stable connection of suspension components, reduce unnecessary stress concentration, enable the car to maintain good driving performance under complex road conditions, and extend the service life of each component.
Standardization and normalization of the automobile maintenance industry is a development trend, and the use of torque wrench is an important tool to achieve this goal. Major automobile manufacturers have clear maintenance manuals that specify the torque standards of bolts and nuts for different components in detail. Maintenance personnel use torque wrench and strictly follow standard operations to make the maintenance process more standardized and ensure the consistency of maintenance quality. This not only helps to enhance the professional image of maintenance companies, but also enhances customers' trust in maintenance services and promotes the development of the automobile maintenance industry towards specialization and standardization.
In the process of automobile fault diagnosis, torque wrench can also play an important role. When the vehicle has problems such as abnormal noise and vibration, maintenance personnel can check the torque of the bolts and nuts of the relevant components to determine whether the fault is caused by looseness or abnormal torque. For example, engine shaking may be due to insufficient bolt torque of components such as spark plugs and fuel injectors. Using torque wrench for detection and adjustment can quickly locate the cause of the fault and improve maintenance efficiency. In addition, after the maintenance is completed, using torque wrench to check the torque again can ensure the maintenance effect and prevent new faults caused by torque problems.
Although the torque wrench itself requires a certain purchase cost, in the long run, it can effectively reduce the cost of automobile maintenance. On the one hand, precise torque control reduces the damage of parts caused by improper tightening of bolts and nuts, avoiding unnecessary replacement costs; on the other hand, it improves the one-time success rate of maintenance and reduces the manpower and material consumption caused by rework. At the same time, it extends the service life of auto parts and reduces the overall maintenance frequency, thereby saving maintenance costs and resources, achieving a win-win situation of economic and social benefits.
With the popularization of new energy vehicles, their unique structure and technical characteristics have put forward new requirements for maintenance tools. The core components of new energy vehicles such as battery packs and motors have higher requirements for torque accuracy. Any slight deviation may affect battery performance and vehicle safety. With its high precision and adjustable characteristics, the torque wrench can meet the strict standards for torque control in new energy vehicle maintenance, ensure the safety and reliability of key operations such as battery connection and motor fixing, and become an indispensable tool for new energy vehicle maintenance, promoting technological progress in the new energy vehicle maintenance industry.
