What’s a torque wrench? It’s a specialty tool essential for some construction and auto repairs. When calibrated, the tool supplies rotational force or torque to fasten a nut or a bolt without excessive effort from the user. It provides more accuracy than a standard wrench.
Buy one that’s properly calibrated. Buy one from an auto supplier or store. If you bought a pre-used torque, take it to the auto parts store for recalibration.
- There are four types of torque wrench–click adjustable, beam, digital electronic, and dial gauge.
- Use a beam-style torque wrench if ease of use and affordability is important.
- Use a click-adjustable wrench for repeated use and accuracy.
Based on application or purpose, it’s important to research torque specifications. You can check based on the number of ft-lbs, which is recommended. For instance, a range between 30-100 ft-lbs may suit your requirement for a specific bolt or nut.
Search for information online on how to tighten fasteners if you can’t find specifications in the instructions. In some cases, you may start in the center, or it may alternate between the two sides. It can also be a star pattern.
Check that the nuts and bolts are in excellent condition, dry, and clean. Remember, torque won’t correctly work on damaged threads. Otherwise, you might have a hard time removing the fasteners later.
Don’t oil the threads before use. It reduces friction and increases the bolt’s load.
Start by tightening the bolts onto the threads with a socket or wrench until they’re tight. Next, you can use or follow up with the torque wrench.
Hold the torque wrench’s handle and place it centered on the pivot. To ensure accuracy, don’t let the handle touch the bar.
Position the device. Find a comfortable position that lets you read the measurements correctly, but not at an angle.
Start fastening or tightening clockwise until you reach the correct torque. Using the same technique, start tightening the remaining fasteners in the recommended direction.
How to use a click adjustable torque wrench
Start by tightening the bolts onto the threads using a socket or wrench until tight.
Set the torque wrench and loosen its adjustable dial. Begin turning the handle until you reach the correct torque recommended before tightening the adjustable dial.
Grip the handle and place the tip on the fastener using the left handle.
Continuously turn the torque wrench clockwise and stop when you hear a ticking sound. Follow this procedure on the same handle. Stop when you hear another ticking noise and check that you’ve reached the correct torque.
Tighten the bolts and nuts or fasteners in the specified pattern.
When finished, reset the torque wrench to reduce pressure on the internal spring. This will keep your device calibrated.
These are the simple steps to use a torque wrench correctly. Follow them to keep it calibrated and perform your tasks with better precision.