What’s a torque wrench? It’s a specialty tool essential for some construction and auto repairs. When it is calibrated, the device can supply rotational force or torque to fasten a nut or a bolt without too much effort from the operator. It provides them with more accuracy than what they’d get from a standard type of wrench.
Buy one that you’re sure is properly calibrated. You must get one from an auto supplier or store. If you bought a pre-used torque, you must take it to the auto parts store for recalibration.
- There are four different types of torque wrench – click adjustable, beam, digital electronic and dial gauge.
- Use a beam-style torque wrench if ease of use and low cost is essential for you.
- Use a click-adjustable one if you value repeat use and accuracy.
Based on application or purpose, you must research on the torque specifications. You can check it out based on the number of ft-lbs, which is recommended. For instance, a range between 30 and 100 ft-lbs may be what you need for a specific bolt or nut.
Look up for the information online if you cannot find the specifications in the instructions.
Check on the pattern on how to tighten the fasteners on the instructions. In some cases, you may find a starting in the center, or it may be alternating between the two sides. Or it can be a star pattern.
Check that the bolts and nuts are in excellent condition, dry and clean. Remember, torque won’t correctly work on any damaged threads. Or else, you might have a hard time removing the fasteners when needed later.
Do not oil the threads to use in advance because it will reduce the friction and also increase the bolt’s load.
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Start by tightening the bolts onto the threads with a socket or a wrench until they’re snug enough. Next, you can use or follow up with the torque wrench.
Hold the torque wrench’s handle and place it center on the pivot. To ensure accuracy, you should avoid having the handle in contact with the bar.
Put the device’s end. Find a comfortable position that lets you read the beam correctly, not at an angle.
Start fastening or tightening clockwise until you achieved the correct torque. Using the same technique, you can 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 a wrench until they’re tight.
Set the torque wrench and loosen its adjustable dial. Begin turning the handle until you achieved the right torque recommended before tightening the adjustable dial.
Grip onto the handle, and put its tip on the fastener using the left side handle.
Turn the torque wrench clockwise continuously and stop when you hear the ticking sound. Perform the same procedure on the same handle, and then stop when you hear another ticking noise, ensuring you have reached the right torque.
Start moving around the project by tightening the bolts and nuts or fasteners in the specified pattern.
When done, you should reset the torque wrench to reduce the pressure on its internal spring. Doing so will also keep your device calibrated.
There you have the simple steps needed to use a torque wrench correctly. Follow them and keep it calibrated as well as perform your tasks with better precision.