1. Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your Bosch GDS 18V-400 Cordless Impact Wrench. Please read these instructions carefully before using the tool and keep them for future reference. This powerful 18V brushless impact wrench is designed for heavy-duty applications, offering high torque and robust durability.
2. Safety Instructions
Always observe general power tool safety warnings and instructions provided with your battery and charger. Failure to follow all instructions may result in electric shock, fire, and/or serious injury.
- Work Area Safety: Keep your work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Electrical Safety: Power tool plugs must match the outlet. Never modify the plug in any way. Do not abuse the cord. Keep cord away from heat, oil, sharp edges, or moving parts.
- Personal Safety: Always wear eye protection. Use hearing protection when operating impact wrenches. Wear appropriate clothing and non-skid safety shoes. Stay alert, watch what you are doing, and use common sense.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
- Battery Tool Use and Care: Recharge only with the charger specified by the manufacturer. Use power tools only with specifically designated battery packs.
3. Package Contents
The Bosch GDS 18V-400 is typically sold as a solo unit. Please verify your specific purchase for included accessories.
- 1 x Bosch GDS 18V-400 Cordless Impact Wrench (tool only)
Note: Battery, charger, and tool box are generally not included with the solo unit and must be purchased separately.
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | GDS 18V-400 |
| Brand Name | Bosch |
| Type | Rechargeable Electric Wrench |
| Power Source | Battery (18V) |
| Rated Voltage | 18V |
| Motor Type | Brushless |
| No-Load Speed | 0-2,500 rpm |
| Impact Rate | 0-3,700 bpm |
| Max. Torque | 400 Nm |
| Max. Breakaway Torque | 600 Nm |
| Screw Diameter | M 10-M 20 |
| Tool Holder | 1/2'' Square |
| Certification | CE |
| Battery Included | No (for solo unit) |
| Dimensions (approx.) | Length: 172 mm, Width: 67 mm, Height: 255 mm |
5. Setup
5.1 Battery Installation
- Ensure the battery is fully charged using a compatible Bosch 18V charger.
- Align the battery pack with the base of the tool.
- Slide the battery into the tool until it clicks securely into place. Ensure it is firmly seated before operation.
- To remove, press the battery release button and slide the battery out.
5.2 Socket/Bit Installation
- Ensure the tool is switched off and the battery is removed for safety.
- The GDS 18V-400 features a 1/2'' square tool holder. Select the appropriate impact-rated socket or bit for your application.
- Push the socket firmly onto the square drive until it locks into place.
- To remove, pull the socket off the square drive.
6. Operating Instructions
6.1 Basic Operation
- Ensure the battery is installed and the correct socket/bit is attached.
- Hold the tool firmly with both hands, if possible, especially when dealing with high torque applications.
- Press the trigger switch to start the tool. The speed is variable depending on how far the trigger is pressed.
- To stop the tool, release the trigger switch.
- The direction of rotation can be changed using the forward/reverse switch, typically located above the trigger. Ensure the tool has come to a complete stop before changing direction.
6.2 ABR (Auto Bolt Release) System
The ABR system is designed for intelligent disassembly, automatically stopping the tool when a bolt is loosened to prevent nuts from falling off and getting lost.
- To activate/deactivate ABR, refer to the specific button or setting on your tool (often indicated by an ABR icon).
- When ABR is ON, the tool will detect when the fastener is loose and automatically stop rotation, allowing for safe removal of the nut/bolt.
6.3 Applications
The Bosch GDS 18V-400 is suitable for a wide range of heavy-duty applications:
- Scaffolding installation and removal
- Solar panel installation
- Construction machinery assembly and disassembly
- Automotive tasks, such as twisting of car tires
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your impact wrench.
- Cleaning: Keep the ventilation openings clean to prevent overheating. Use a soft, damp cloth to clean the tool casing. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Periodically inspect the tool for any damage, loose screws, or worn parts. Replace damaged parts immediately.
- Brushless Motor: The brushless motor requires less maintenance compared to brushed motors, as there are no carbon brushes to replace.
- Battery Care: Store batteries in a cool, dry place away from direct sunlight. Do not store fully discharged batteries for extended periods.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not charged or improperly installed | Ensure battery is fully charged and correctly inserted. |
| Reduced power/torque | Low battery charge; worn or incorrect socket | Recharge battery. Use appropriate impact-rated sockets in good condition. |
| Tool overheats | Blocked ventilation openings; continuous heavy use | Clean ventilation openings. Allow tool to cool down. Avoid prolonged heavy use. |
| ABR system not working as expected | ABR feature is off; specific application conditions | Ensure ABR is activated. The system is optimized for certain fastener types and conditions. |
9. User Tips
- Battery Compatibility: This tool is part of the Bosch 18V system. Ensure you use genuine Bosch 18V batteries and chargers for optimal performance and safety.
- Authenticity: Always purchase from authorized dealers to ensure you receive a genuine Bosch product.
- Socket Quality: For high torque applications, always use impact-rated sockets to prevent breakage and ensure safety.
10. Warranty and Support
For warranty information, service, or technical support, please refer to the official Bosch website or contact your local Bosch service center. Keep your proof of purchase for any warranty claims.
