Why Using a Torque Wrench as a Breaker Bar Can Be Risky

Using a torque wrench as a breaker bar is like using a high-tech precision tool for a job it wasn't designed for. While it's possible, it can lead to serious issues, ranging from inaccurate readings to damage to the torque wrench itself.

Why It's a Bad Idea

Calibration Gets Messed Up:

Torque wrenches are finely tuned instruments designed to apply a specific amount of torque to a fastener. Using them as a breaker bar, especially on tough, rusted bolts, can throw off their calibration. This means that when you actually need precise torque, you can no longer trust the readings. Accurate torque is crucial for proper installation and safety in many applications, making this a serious problem.

Weak Points:

Torque wrenches usually have more complex internals compared to breaker bars. Applying a force they weren't designed to handle can damage the torque wrench. For example, breaking the internals of a 100 lb-in torque wrench just because you didn’t want to spend $20 on a breaker bar is more than just an inconvenience—it's a waste of a valuable tool.

Length and Leverage:

Breaker bars are often longer and designed to give you better leverage, making them easier to loosen stubborn bolts. Torque wrenches might not offer the same leverage and force distribution, making the job unnecessarily difficult. This could result in frustration and potential injury.

What You Should Do Instead

Invest in a Breaker Bar:

Breaker bars are not expensive and can save you a lot of trouble. Designed to handle the abuse of loosening stubborn fasteners without damaging critical components, a breaker bar is the ideal tool for the job.

Use Penetrating Oil:

For those really tough bolts, a good penetrating oil can make a world of difference. Apply it and wait a while before attempting to loosen the bolt. This can help break the rusted or hardened fastener’s seal.

Impact Wrench:

If you frequently deal with stuck or rusted bolts, an impact wrench can be a game-changer. Although it's an additional tool, it'll save you time and protect your knuckles from potential injury.

In Summary

Using a torque wrench as a breaker bar is asking for trouble. It's a risk that can damage your expensive tool, which serves a critical function when used properly. Investing in a proper breaker bar is worth the small investment. Your torque wrench and your future self will thank you for this decision.

If you're experiencing inconsistent results with your torque wrench, it might be worth having it calibrated by a professional to ensure it's still accurate and usable. Proper maintenance and the use of specialized tools are key to ensuring the longevity and effectiveness of your precision instruments.