1. Introduction and Overview
This manual provides detailed instructions for the safe and effective use of your GEARWRENCH 85079 1/2" Flex Head Electronic Torque Wrench with Angle. This electronic torque wrench is designed for precise fastener torque and angle measurements, featuring a 72-tooth thin-head flex ratchet for improved access in confined spaces.
Figure 1: GEARWRENCH 85079 1/2" Flex Head Electronic Torque Wrench.
The wrench provides multi-notification feedback including handle vibration, audible beeps, and LCD alerts as the target torque is achieved. Its handle is designed to be oil and solvent resistant, ensuring durability in various working conditions.
Figure 2: Key features of the GEARWRENCH 85079 electronic torque wrench, highlighting multi-notification, oil and solvent resistant handle, and precision.
2. Setup
2.1 Battery Installation
The GEARWRENCH 85079 requires two AA batteries (not included). To install:
- Locate the battery compartment cap at the base of the handle.
- Unscrew the cap counter-clockwise to open the compartment.
- Insert two AA batteries, ensuring correct polarity (+/-).
- Replace the cap by screwing it clockwise until secure.
Caution: Ensure the battery cover is securely fastened to prevent damage or loss of power during operation.
2.2 Initial Power On and Unit Selection
After battery installation:
- Press the power button (Power Symbol) to turn on the wrench. The LCD screen will illuminate.
- To select the desired unit of measurement (e.g., ft/lbs, in/lbs, Nm), press the Unit button repeatedly until the desired unit is displayed.
Figure 3: Close-up view of the electronic display and control buttons for unit selection and settings.
3. Operating Instructions
3.1 Setting Target Torque
To set a specific torque value:
- Turn on the wrench.
- Press the Set button to enter torque setting mode.
- Use the Up (^) and Down (v) arrow buttons to adjust the target torque value.
- Press Set again to confirm the value and exit setting mode.
3.2 Using the Angle Feature
The wrench can measure angle in addition to torque, which is crucial for Torque-to-Yield fasteners:
- After reaching the initial torque setting, press the % button to switch to angle mode.
- The display will show 'Angle' or a similar indicator.
- Continue tightening the fastener. The wrench will display the angle of rotation.
- The wrench will provide feedback (vibration, beep, LCD flash) when the target angle is reached.
Video 1: Demonstrates the features of the GEARWRENCH Electronic Torque Wrench with Angle, including its digital display and feedback mechanisms.
Video 2: A guide on how to use the GEARWRENCH Electronic Torque Wrench with Angle for accurate fastening.
3.3 Interpreting Notifications
- Audible Beep: The wrench emits a series of beeps as you approach the target torque/angle, becoming a solid tone when the target is reached.
- Handle Vibration: The handle vibrates to provide tactile feedback as you near and reach the target.
- LCD Flash: The LCD screen will flash when the target torque or angle is achieved.
Figure 4: Detail of the 72-tooth thin-head flex ratchet, allowing for a 5-degree swing arc.
4. Maintenance
4.1 Cleaning and Storage
- Wipe the wrench clean with a soft, dry cloth after each use. Avoid harsh chemicals that may damage the display or handle.
- Store the wrench in its protective case in a dry, temperature-controlled environment.
- Remove batteries if the wrench will not be used for an extended period to prevent leakage.
Figure 5: The GEARWRENCH 85079 electronic torque wrench stored in its durable protective case.
4.2 Calibration
Electronic torque wrenches require periodic calibration to maintain accuracy. The calibration accuracy is warrantied for 90 days from the date of purchase. For recalibration services, please contact GEARWRENCH customer support or an authorized service center.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Wrench does not power on. | Dead or incorrectly installed batteries. | Replace batteries with fresh AA cells, ensuring correct polarity. Check battery compartment cap is secure. |
| Inaccurate torque readings. | Wrench is out of calibration; improper usage. | Ensure proper technique. If issues persist, recalibrate the wrench. |
| Battery cover is loose or broken. | Impact or wear. | Contact customer support for replacement parts or service. |
| Display is dim or flickering. | Low battery power. | Replace batteries. |
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | 85079 |
| Drive Size | 1/2 inch |
| Torque Range | 25-250 ft/lbs |
| Head Style | Flex Head |
| Ratchet Teeth | 72-tooth |
| Swing Arc | 5 degrees |
| Measurement Standard | SAE (Inch) |
| Operation Mode | Electric |
| Material | Alloy Steel |
| Item Weight | 1 Pound |
| Included Components | 1/2" Flex Head Electronic Torque Wrench with Angle 25-250 ft/lbs. |
7. Warranty and Support
7.1 Manufacturer's Warranty
This GEARWRENCH product comes with a 1-year limited warranty. The calibration accuracy is specifically warrantied for 90 days from the date of purchase. Please retain your proof of purchase for warranty claims.
7.2 Customer Support
For technical assistance, warranty claims, or service inquiries, please contact GEARWRENCH customer support. Refer to the official GEARWRENCH website or product packaging for the most current contact information.