Hairich 1/2-inch 40-210 Nm Torque Wrench Instruction Manual

1. Introduction

Thank you for choosing the Hairich 1/2-inch 40-210 Nm Torque Wrench. This precision tool is designed for accurate torque application in various mechanical tasks, ensuring fasteners are tightened to their specified values. This manual provides essential information for the safe and effective use, setup, and maintenance of your torque wrench.

This torque wrench is TÜV SÜD GS certified, indicating high quality and safety standards. It is constructed from robust chrome-vanadium steel, offering reliable control for tasks such as tightening wheel nuts, changing tires, and working on brake components. Its versatile design makes it suitable for automotive workshops, garages, and general maintenance.

2. Product Overview

The Hairich 1/2-inch 40-210 Nm Torque Wrench set includes the following components:

• 1 x Hairich 1/2-inch Torque Wrench
• 3 x Impact Sockets (17mm, 19mm, 21mm) - Color-coded for easy identification
• 1 x 125mm Extension Bar
• 1 x 1/2-inch to 3/8-inch Socket Adapter
• 1 x Protective Storage Case

Image: The complete Hairich torque wrench set, including the wrench, three color-coded impact sockets (17mm, 19mm, 21mm), an extension bar, a socket adapter, and a protective storage case.

Image: An overhead view of the Hairich torque wrench, its accessories (sockets, extension, adapter), and the protective case, alongside an inspection certificate.

3. Safety Information

• Always wear appropriate personal protective equipment, such as safety glasses, when using tools.
• Ensure the workpiece is securely fastened before applying torque.
• Do not use the torque wrench as a breaker bar or for loosening overtightened fasteners.
• Avoid dropping the torque wrench, as this can affect its calibration and accuracy.
• After use, always reset the torque wrench to its lowest setting (40 Nm) to relieve spring tension and maintain calibration accuracy over time.
• Store the torque wrench in its protective case in a dry, clean environment.
• Regularly check the wrench for any signs of damage or wear. Do not use if damaged.

Image: The TÜV SÜD GS (Geprüfte Sicherheit - Tested Safety) certification logo, indicating that the Hairich torque wrench meets German and European safety standards.

4. Setup

1. Unpack: Carefully remove the torque wrench and accessories from the protective case.
2. Select Socket: Choose the appropriate impact socket (17mm, 19mm, or 21mm) or adapter for your application.
3. Attach Socket: Firmly attach the selected socket or adapter to the 1/2-inch square drive of the torque wrench. Ensure it clicks into place.
4. Adjust Torque Setting:
   • Unlock the adjustment knob at the end of the handle by pulling it down.
   • Rotate the handle to align the desired torque value on the main scale with the zero mark on the micrometer scale.
   • For fine adjustments, continue rotating the handle until the exact desired value on the micrometer scale aligns with the main scale line.
   • Release the adjustment knob to lock the setting. Ensure it is securely locked before use.

Image: A diagram illustrating key features of the torque wrench, including the quick-release head for easy socket changes, the simple locking ring for secure torque setting, the reversible ratchet head for clockwise and counter-clockwise operation, and the "Click-Stop" mechanism indicating when the preset torque is reached.

5. Operating Instructions

1. Prepare Fastener: Ensure the fastener and mating surface are clean and free from debris.
2. Position Wrench: Place the socket firmly onto the fastener.
3. Apply Torque: Apply steady, smooth pressure to the handle in the desired direction (clockwise for tightening, counter-clockwise for loosening if using the reversible ratchet for initial break-away, but always tighten with the torque function).
4. Listen for Click: Continue applying pressure until you hear and feel a distinct "click" from the wrench. This indicates that the preset torque value has been reached.
5. Stop Applying Pressure: Immediately stop applying pressure once the click is heard. Do not overtighten.
6. Repeat if Necessary: For multiple fasteners, repeat the process for each one.

The 72-tooth reversible ratchet allows for precise operation in both clockwise and counter-clockwise directions, even in confined spaces. The clear and sensitive click signal ensures accurate torque application without over-tightening.

Image: A person demonstrating the use of the Hairich torque wrench to tighten lug nuts on a car wheel, highlighting its practical application.

Image: The Hairich torque wrench displayed with visual examples of its wide application, including use on bicycles, motorcycles, cars, and general machinery, emphasizing its versatility.

6. Maintenance

• Cleaning: Wipe the torque wrench clean with a soft, dry cloth after each use. Do not use solvents or harsh chemicals.
• Storage: Always reset the torque wrench to its lowest setting (40 Nm) before storing it. This relieves tension on the internal spring mechanism, preserving its accuracy and extending its lifespan. Store the wrench in its protective case in a dry, temperature-controlled environment.
• Calibration: Torque wrenches are precision instruments and should be periodically checked for calibration by a qualified service center. The frequency of calibration depends on usage, but annual checks are generally recommended for professional use.
• Lubrication: The internal mechanism is factory-lubricated and generally does not require user lubrication. Avoid disassembling the wrench.

7. Troubleshooting

8. Specifications

The Hairich 1/2-inch 40-210 Nm Torque Wrench is engineered for precision and durability.

Image: A graphic highlighting the precision of the torque wrench, stating "Precision Torque Measurement ±3%".

Image: A reference table detailing strength ratings and corresponding torque values (in N.m) for various bolt sizes (M2 to M27) and material types, useful for determining appropriate torque settings.

9. Warranty and Support

The Hairich 1/2-inch 40-210 Nm Torque Wrench comes with a 24-month warranty. For any questions, technical support, or warranty claims, please contact Hairich customer service. Our friendly customer service team is available to assist you.

Please retain your proof of purchase for warranty purposes.