Uharbour 3/8" Drive Digital Torque Wrench (Model UHXM022) Instruction Manual

1. Introduction

Thank you for choosing the Uharbour 3/8" Drive Digital Torque Wrench, Model UHXM022. This precision instrument is designed for accurate torque measurement and application in various automotive, bicycle, and mechanical tasks. Please read this manual thoroughly before operation to ensure correct usage, optimal performance, and safety.

Figure 1: Uharbour 3/8" Drive Digital Torque Wrench. This image shows the complete digital torque wrench with its display and handle.

2. Safety Information

Always observe the following safety precautions to prevent injury and damage to the tool or workpiece:

• Wear appropriate personal protective equipment, such as safety glasses.
• Do not exceed the maximum torque capacity of the wrench (99.5 ft-lbs / 135 Nm).
• Ensure the socket or fastener is correctly seated before applying torque.
• Keep the wrench clean and dry. Avoid exposure to extreme temperatures or corrosive environments.
• Do not use the wrench as a pry bar or hammer.
• Store the wrench in its protective case when not in use.

3. Package Contents

Verify that all items are present in the package:

• 1 x Uharbour Digital Torque Wrench (Model UHXM022)
• 2 x AAA Batteries
• 1 x User Manual (this document)
• 1 x Calibration Certificate with Serial Number

Figure 2: Contents of the product package. This image displays the digital torque wrench, batteries, user manual, and calibration certificate.

4. Product Features

• Wide Torque Range: 1.5-99.5 ft-lbs / 6.8-135 Nm, suitable for diverse applications.
• High Accuracy: Delivers ±1% accuracy for precise torque measurement.
• Peak & Track Modes: Peak mode displays the maximum torque applied, while Track mode shows real-time torque values.
• Alert System: Provides vibration, buzzer, and LED light alerts when the target torque is reached.
• Dual-Direction Ratchet: Reversible ratchet head supports both clockwise and counterclockwise operations.
• Multiple Measurement Units: Easily switch between N-m, kgf-cm, lb-ft, and lb-in.
• High-Definition LED Screen: Clear display for easy reading in various lighting conditions.

Figure 3: Key features of the Uharbour Digital Torque Wrench. This banner highlights the wrench's precision ratchet, 1% accuracy, digital display, and sturdy construction.

5. Product Overview (Components)

Familiarize yourself with the main components of your digital torque wrench:

Figure 4: Detailed view of the wrench's interface. This image points out the buzzer, clear LCD screen with backlight, LED indicators, and the five available measurement units.

• Ratchet Head: 3/8" square drive for attaching sockets.
• Digital Display: High-definition LED screen showing torque values, units, and modes.
• Control Buttons: For power, mode selection, unit selection, and value adjustment.
• LED Indicators: Lights that illuminate as target torque is approached and reached.
• Buzzer: Audible alert for target torque.
• Battery Compartment: Located in the handle for AAA batteries.

6. Setup

6.1. Installing Batteries

1. Locate the battery compartment at the base of the handle.
2. Twist or slide the cover to open.
3. Insert two AAA batteries, ensuring correct polarity (+/-).
4. Close the battery compartment securely.

6.2. Power On/Off

• To power on, press and hold the power button (usually marked with ⑂ or a power symbol) until the display illuminates.
• The wrench will automatically shut off after a period of inactivity to conserve battery life.
• To manually power off, press and hold the power button again.

7. Operating Instructions

7.1. Unit Selection

The wrench supports four measurement units: N-m, kgf-cm, lb-ft, and lb-in.

1. With the wrench powered on, press the 'U' button (Unit) to cycle through the available units.
2. Select the desired unit for your application.

Figure 5: Unit selection on the digital display. This image emphasizes instant and accurate readings, and the ability to switch between N.m, lb.ft, lb.in, and kg.cm units.

7.2. Mode Selection (Peak / Track)

The wrench offers two primary operating modes: Peak mode (P) and Track mode (T).

1. Press the 'P/T' button to switch between Peak mode and Track mode.
2. Peak Mode (P): Displays and holds the maximum torque value applied during the tightening process. Useful for verifying the highest torque achieved.
3. Track Mode (T): Displays real-time torque values as they are applied. Ideal for continuous monitoring during tightening.

Figure 6: Peak and Follower (Track) modes on the display. This close-up illustrates the 'Peak mode' (P-Mode) which retains the maximum torque value, and 'Follower mode' (T-Mode) which shows real-time torque values.

7.3. Setting Target Torque

To set a specific target torque value:

1. Ensure the wrench is in Peak mode (P).
2. Press the 'M' button (Memory/Set) to enter the setting interface.
3. Use the up (▲) and down (▼) arrow buttons to adjust the target torque value. Hold the buttons for faster adjustment.
4. Press the 'M' button again to confirm and save the target value.

7.4. Torque Application and Alerts

When applying torque:

1. Attach the appropriate socket to the ratchet head.
2. Place the socket onto the fastener.
3. Apply steady, smooth force to the wrench handle.
4. As you approach the target torque, the LED indicators will light up sequentially, and the buzzer will emit a warning sound.
5. When the target torque is reached, the LED indicators will fully illuminate, and the buzzer will emit a continuous tone, accompanied by vibration. Stop applying force immediately.

7.5. Memory Function

The wrench can store torque values for future reference.

• In Peak mode, after applying torque, the maximum value will be displayed. Press the 'M' button to save this value to memory.
• Refer to the detailed instructions in the full user manual for accessing and reviewing stored memory data.

7.6. Directional Ratchet

The ratchet head can be switched for clockwise or counterclockwise operation.

• Locate the small lever or switch on the ratchet head.
• Slide the lever to the desired direction for tightening (clockwise) or loosening (counterclockwise).

7.7. Application Examples

Figure 7: The Uharbour Digital Torque Wrench in various applications. This composite image shows the wrench being used to tighten bolts on a bicycle wheel, a motorcycle front fork, and a car engine.

8. Calibration

Your Uharbour Digital Torque Wrench comes pre-calibrated with a ±1% accuracy and includes a calibration certificate with a unique serial number. This ensures reliable and precise measurements from the first use.

Figure 8: Close-up of the calibration certificate. This image details the model, style, range, serial number, and measured values, confirming the wrench's accuracy.

For information regarding the calibration process or verification, please refer to the provided certificate or the manufacturer's support resources.

9. Maintenance

• Cleaning: Wipe the wrench with a clean, dry cloth after each use. Do not use abrasive cleaners or solvents.
• Storage: Store the wrench in its original protective case in a dry, temperature-controlled environment. Remove batteries if storing for extended periods to prevent leakage.
• Inspection: Periodically inspect the ratchet head and body for any signs of wear or damage. Do not use a damaged wrench.

10. Troubleshooting

11. Specifications

12. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the official Uharbour website or contact their customer service directly. Keep your purchase receipt and calibration certificate for warranty claims.