S&R 1/2-inch 28-210 Nm Torque Wrench Set Instruction Manual

1. Introduction

Thank you for choosing the S&R 1/2-inch 28-210 Nm Torque Wrench Set. This manual provides essential information for the safe and effective use, setup, operation, and maintenance of your new torque wrench. Please read these instructions carefully before use and retain them for future reference. This tool is designed for precise torque application in automotive, motorcycle, and industrial settings, ensuring fasteners are tightened to their specified values.

2. Safety Information

Always observe general safety precautions when using hand tools. Failure to follow these instructions may result in injury or damage to the tool or workpiece.

• Wear appropriate personal protective equipment, such as safety glasses, to prevent eye injury.
• Ensure the workpiece is stable and secured before applying torque.
• Do not use the torque wrench as a breaker bar or for loosening seized fasteners.
• Avoid exceeding the maximum torque setting of 210 Nm.
• Keep the tool clean and free from oil or grease to maintain a secure grip.
• Store the torque wrench in its protective case when not in use, and always set it to its lowest torque setting (but not below the minimum) before storage to relieve spring tension.
• Regular calibration is recommended to maintain accuracy.

3. Package Contents

Verify that all items listed below are present in your package:

• 1x S&R 1/2-inch Torque Wrench (475 mm length)
• 1x 1/2-inch Extension Bar (125 mm)
• 1x Socket 17 mm
• 1x Socket 19 mm
• 1x Socket 21 mm
• 1x Storage Case
• 1x Calibration Certificate (DIN 6789)

Image 3.1: The S&R 1/2-inch Torque Wrench Set, including the torque wrench, extension bar, three sockets (17mm, 19mm, 21mm), and the protective storage case.

4. Setup

4.1 Attaching Sockets and Extension

1. Select the appropriate socket (17mm, 19mm, or 21mm) or the 125mm extension bar for your task.
2. Firmly push the chosen accessory onto the 1/2-inch square drive of the torque wrench until it clicks into place.
3. Ensure the accessory is securely attached before use.

Image 4.1: Demonstrates how to attach a socket to the square drive of the torque wrench. The image also highlights the Cr-V steel head and the audible click mechanism.

4.2 Setting the Torque Value

The torque wrench features a dual-range scale for precise adjustment.

1. Unlock: Rotate the locking knob at the end of the handle counter-clockwise to unlock the adjustment mechanism.
2. Adjust: Rotate the handle to set the desired torque value. The main scale on the body provides major increments (e.g., 28, 42, 56 Nm), while the smaller scale on the handle allows for fine adjustments (0-12 Nm). Add the value from the handle scale to the main scale value to get the precise setting. For example, to set 100 Nm, align the 98 Nm mark on the main scale with the edge of the handle, then rotate the handle until the '2' mark on the handle aligns with the center line, resulting in 98 + 2 = 100 Nm.
3. Lock: Once the desired torque is set, rotate the locking knob clockwise to secure the setting.

Image 4.2: Illustration of the torque adjustment process: Unlock the handle, rotate to adjust the desired torque value, and then lock the handle to secure the setting.

Image 4.3: Close-up of the torque wrench's dual-range scale, showing both Newton-meter (Nm) and Meter Kilogram (M. KGS) measurements. The laser-engraved markings ensure clear readability.

5. Operating Instructions

5.1 Applying Torque

1. Ensure the torque wrench is set to the correct torque value and locked.
2. Place the socket firmly onto the fastener.
3. Hold the torque wrench by the handle and apply steady, increasing pressure in the tightening direction (clockwise for most fasteners).
4. Continue applying pressure until you feel and hear a distinct "click" from the wrench. This indicates that the preset torque has been reached.
5. Immediately stop applying force once the click is felt/heard. Do not continue to tighten the fastener beyond this point.
6. Remove the torque wrench from the fastener.

Image 5.1: Examples of the torque wrench in use for various applications, including tightening wheel nuts, general auto repair, industrial tasks, and motorcycle maintenance.

5.2 Ratchet Head Direction

The ratchet head allows for both clockwise (CW) and counter-clockwise (CCW) operation. Use the switch on the ratchet head to select the desired direction for tightening or loosening. For torque application, ensure the switch is set to the tightening direction (usually clockwise).

Image 5.2: Detailed view of the ratchet head, showing the internal 24-tooth mechanism, the sealing ring for lubrication retention, and the switch for adjusting the direction (clockwise/counter-clockwise).

6. Maintenance

6.1 Cleaning and Storage

• After each use, wipe the torque wrench clean with a dry, soft cloth. Do not use solvents or harsh chemicals.
• Before storing, always reset the torque wrench to its lowest setting (28 Nm) to relieve tension on the internal spring mechanism. This helps maintain the tool's accuracy over time.
• Store the torque wrench and its accessories in the provided protective case in a dry, clean environment.

6.2 Calibration

The S&R torque wrench is factory calibrated according to DIN 6789 standards with an accuracy of ±4%. To ensure continued precision, periodic recalibration by a qualified service center is recommended, especially after heavy use or if the tool has been dropped.

Image 6.1: The S&R torque wrench with its calibration certificate, emphasizing its adherence to DIN 6789 standards and the robust, sealable storage box.

7. Troubleshooting

If you encounter issues with your torque wrench, refer to the following common problems and solutions:

8. Specifications

Image 8.1: The S&R 1/2-inch Torque Wrench and extension bar with key dimensions indicated: 475 mm for the wrench and 125 mm for the extension.

9. Warranty and Support

S&R products are manufactured to high-quality standards. For information regarding warranty coverage, please refer to the warranty card included with your product or visit the official S&R website.

For technical support, service, or inquiries about recalibration, please contact S&R customer service through their official channels. Ensure you have your model number (465.012.210) and purchase details available when contacting support.