How to Fix a Torque Wrench

By Richard S. Clark | Last Updated: February 18, 2022

One of the surest ways to know that your tool requires some fixing is the lack of clicking sound. The sound is essential because it gives a guide on how much torque to apply. Without it, you may end up damaging the nut, bolt, or even the wrench itself. When such an event happens, consider fixing it as soon as you can, as long as you are actively using it!

When it stops clicking, then it will also stop functioning well! Consider doing the repairs, either on your own or even by a professional. To understand more about the same, please go through this informative article.

Step By Step Guideline

  • Learn how to do it!

In as much as it appears simple to do the task, it might turn out to be the most challenging thing to do. If you cannot do so, then you should outsource the service to a professional.

  • Disassemble the tool.

Locate the lock knob and loosen the adjuster on the handle. Unscrew as you observe the spring. When the pressure reduces on the spring, then the wrench will feel somewhat flat!

If you are not sure whether there is no tension in the spring, then you can unscrew as far as it can go.

  • The calibration lock nut.

It is usually at the end of the handle, and it is large to notice with ease! Take it from the wrench. The lock nut, if not well in place, can make the tool lack calibration.

  • The calibration sleeve.

Once the calibration lock nut is out, then you can access the sleeve. You will need to remove it from the handle. It is a threaded metal cylinder featuring one closed end.

That is the part that comes into contact with the piston. It applies pressure on the spring when the wrench is in perfect working condition.

To remove this component from the handle, unscrew the sleeve while twisting the handle concurrently. It will lead to a higher torque setting. Do not apply pressure to the spring at this time. When you remove it, all the other components that keep pushing it will no longer hold in one place!

  • The lockout knob.

You will need to remove it also. In the wrench is a piston that has a pin that prevents the lockout knob from unscrewing out wholly. Remove the retainer screw, and you will be able to remove the lockout knob.

After taking out the pin that holds the knob, you can then remove all the other components with ease.

  • Locate the faulty parts.

Since you have all the components out, you will need to check for faulty parts and replace them. Remember to use genuine spare parts while fixing it, or otherwise, it won’t last before re-doing the work again.

For a long-lasting impact, fix all the parts that seem to wear out! Do not reassemble it if you have not replaced all the faulty parts and the ones that appear potential.

  • Reassemble the wrench.

The process is a direct reversal of disassembly. Put everything back in the order of removal. The lockout knob and its components will be the first to go in. Make sure that you place the bearing in its correct orientation. Do not forget to recalibrate your wrench! Make sure that the spring tension is also sufficient. Failure to do so will make the bearing to slide in freely. It will not, then, sit on the groove, and you will not hear it click.

The bearing is a consumable part that will require some cleaning and greasing before putting it back.

Put back the spring, piston, handle, and the retaining pin. Since you will need to calibrate the wrench, you should leave the lock nut out first.

  • The ratchet head.

Make sure that it is in its place before using the wrench. It creates the ratcheting action. The ratchet head covers the internal components from exposure. To fix it, tighten it with two screws. The head should remain sealed at all times since its parts can be somewhat fragile. You should also keep it clean at all times!

  1. Recalibrate the wrench.

As a standard practice, you should calibrate the wrench at all times. Failure to do so will lead to damages to the tool. That is because you will not have the ability to ascertain the amount of force to apply when using it.

Calibration will enable your wrench to adhere to international standard practices. When doing quality inspections, you can obtain the necessary certifications if your tools meet the qualifications.

Calibration also will help keep the wrench in excellent working condition for a very long time.

  • Test the tool.

Put it to use and wait for the click sound. If you hear one, then the task is complete, but otherwise, you will need to re-do the work again.

Conclusion

Fixing a torque wrench is a simple task, provided you have experience. If the task becomes complex, then you should outsource the work. Follow all the steps as in the article. Make sure that you can hear a click sound eventually!

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