1. Product Overview
The GOYOJO Digital Torque Wrench is a high-precision professional tool designed for a wide range of applications including automotive maintenance, motorcycle repairs, bicycle adjustments, and various DIY projects. It combines advanced digital technology with a robust mechanical design to provide accurate and reliable torque measurements.
Figure 1: GOYOJO Digital Torque Wrench and Carrying Case
Key Features:
- Exceptional Accuracy: Provides ±2% accuracy in clockwise direction and ±2.5% in counter-clockwise direction.
- Multifunctional & Adaptable: Suitable for various tasks, from car maintenance to home improvement.
- Innovative Peak & Trace Modes: Easily switch between Peak mode (highest torque reading) and Trace mode (live readings).
- Efficient Design: Built with durable Chromium Molybdenum Steel, featuring a bidirectional ratchet head with 72 teeth.
- Comfortable Grip & Easy-to-Read Display: Ergonomic handle and large, backlit LCD for clear visibility in all conditions.
- Trusted Reliability: Designed for longevity, capable of withstanding 10,000 cycles.
Figure 2: Overview of GOYOJO Digital Torque Wrench Features
2. Setup
2.1 Battery Installation
The GOYOJO Digital Torque Wrench requires 2 AAA batteries, which are included with the product. To install or replace batteries:
- Locate the battery compartment on the handle of the wrench.
- Open the battery compartment cover.
- Insert 2 AAA alkaline batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
2.2 Initial Power On
After battery installation, press the 'P/C' button to power on the device. The LCD display will illuminate.
Figure 3: Control Panel Layout
3. Operating Instructions
3.1 Measurement Modes
The wrench offers three distinct measurement modes:
- 'T' Real-time Mode: Displays live torque readings as you apply force. The value updates continuously.
- 'P' Peak Mode: Records and displays the maximum torque value achieved during an operation. The value remains on screen until cleared.
- 'Pre' Preset Mode: Allows you to set a target torque value. The wrench will provide visual and audible alerts when approaching and reaching the preset torque.
Press the 'M' button to cycle through these modes.
Figure 4: Three Measurement Modes
3.2 Unit Switching
The wrench supports four common torque units:
- N.m (Newton meter)
- lbf.ft (foot-pound force)
- lbf.in (inch-pound force)
- kgf.cm (kilogram force centimeter)
Press the 'U/S' button to switch between these units.
Figure 5: Unit Switching Function
3.3 Bidirectional Measurement and Accuracy
The GOYOJO Digital Torque Wrench is designed for bidirectional measurement, providing high accuracy in both directions:
- Clockwise Accuracy: ±2%
- Counter-clockwise Accuracy: ±2.5%
This ensures precise application of torque regardless of the tightening direction.
Figure 6: Bidirectional Measurement Accuracy
3.4 Setting Target Torque (Preset Mode)
In 'Pre' (Preset) mode, you can set a desired torque value. The wrench will alert you as you approach and reach this value:
- When the torque value reaches 80% of the target, the buzzer will emit intermittent sounds and the LED indicator light will flash.
- When the torque value reaches or exceeds the target, the buzzer will emit a continuous sound and the LED will remain illuminated.
Use the Up (▲) and Down (▼) buttons to adjust the target torque value.
Figure 7: Torque Target Setting Alerts
4. Maintenance
4.1 Cleaning and Storage
- Wipe the wrench clean with a soft, dry cloth after each use. Avoid using abrasive cleaners or solvents.
- Store the wrench in its original carrying case in a dry, cool place, away from direct sunlight and extreme temperatures.
- Remove batteries if the wrench will not be used for an extended period to prevent leakage.
4.2 Calibration
For optimal accuracy, it is recommended to have the torque wrench professionally calibrated periodically, especially after heavy use or if accuracy is suspected to have degraded. Refer to GOYOJO customer support for calibration services.
5. Troubleshooting
Common Issues:
- Display Not Working: Check battery installation and ensure batteries are not depleted. Replace if necessary.
- Inaccurate Readings: Ensure the wrench is properly calibrated. Avoid dropping or subjecting the wrench to severe impacts.
- No Audible Alert: Verify that the buzzer function is enabled in Preset mode.
If you encounter persistent issues not covered here, please contact GOYOJO customer support.
6. Product Specifications
| Specification | Detail |
|---|---|
| Model | GM30 |
| Measurement Range | 0.9-30 N.m (30Nm model) |
| Socket Size | 1/4 inch |
| Length | 230 mm |
| Accuracy | Clockwise: ±2% / Counter-clockwise: ±2.5% |
| Data Storage Capacity | 999 readings |
| Operation Modes | Real-time (T), Peak (P), Preset (Pre) |
| Units | N.m, lbf.ft, lbf.in, kgf.cm |
| Ratchet Head Form | Dual ratchet head |
| Battery | 2 AAA batteries (included) |
| Material | Chromium Molybdenum Steel |
| Color | Yellow and Black |
| Item Weight | 1.59 pounds |
| Package Dimensions | 13.46 x 3.43 x 2.32 inches |
Note: Specifications are subject to change without prior notice.
Figure 8: Product Technical Specifications
7. Warranty and Support
GOYOJO stands behind the quality of its products. The Digital Torque Wrench comes with a 1-year warranty from the date of purchase.
For any questions, technical assistance, warranty claims, or support, please contact our dedicated customer support team:
Email: support@goyojo.com
Please provide your product model and purchase details when contacting support to ensure prompt assistance.
