maintain a torque wrench

Ask any technician what the tool they use the most is, the answer you’ll hear the most is torque wrench. A torque wrench is necessary for multiple parts of airframe manufacturing and aircraft maintenance. These tools need to be reliable. Torque wrench maintenance can prevent equipment damage and minimize the chance of accidents. To ensure tool performance, technicians should learn how to maintain a torque wrench. Follow the tips below:

Inspect Before Use

The first step you need to take to maintain a torque wrench is regular inspection. Take a look at the torque wrench before performing work. Look for any signs of wear or cracks. Replace any parts that are worn. Lubricate the torque wrench regularly.

Preventing Damage

One of the most common causes of equipment damage is impact from dropping onto a hard surface. Equipment settings were not designed to withstand this type of impact. After dropping, a torque wrench may be out of calibration. Opinions differ as to how fast this can throw off accuracy. Some managers and technicians believe that a single drop can render a wrench useless, while others think that damage only results after multiple incidents. Even though these opinions differ, most people agree that impacts from falls will damage accuracy.

The best way to prevent damage is by minimizing instances when a torque wrench could be dropped. Avoid leaving the torque wrench on the ground or on an insecure surface. Don’t leave the wrench in locations that where it could get bumped or fall. Use a tool belt or tool chest to move equipment between jobs or locations. It may be an adjustment to transport a torque wrench in this way, but it goes a long way towards preventing damage.

If your torque wrench sustains damage, let someone know. You may need to schedule torque wrench calibration testing to ensure everything is still working correctly. Make sure to keep the torque wrench in a secure place when not in use.


Most torque wrench manufacturers stress the importance of minimizing spring wear on click type torque wrenches. The recommendation is to set the torque wrench to the minimum setting before storage. This may take some getting used to, but it will become habit after some time. If the torque wrench is being transported between facilities, use the package that the torque wrench was shipped in. If that isn’t available, make sure that the torque wrench is secure.

Torque Wrench Calibration

The best way to ensure that a torque wrench is working correctly is by calibration. During the calibration process, the wrench is checked to determine if it is within standards. If the tool is not within spec, the company is notified. The calibration lab will adjust or repair the wrench to make sure that it meets necessary standards.

Although there is a routine calibration cycle for this type of tooling, calibration needs may differ on use. Technicians that use their tooling more frequently often shorten calibration intervals on their equipment. If equipment is thought to be damaged or out of calibration, it can always be sent in for inspection. If you need information about maintain a torque wrench or torque wrench calibration, contact the team at e2b calibration.