Tools / Power Tools
Bosch GDS 18V-400 Professional Cordless Impact Wrench User Manual
Quick guide for the Bosch GDS 18V-400 Professional Cordless Impact Wrench, covering assembly, operation, ABR (Auto Bolt Release) settings, and maintenance.
Table of contents
Manual images
Jump to the sectionQuick guide from the manual
The Bosch GDS 18V-400 is a cordless impact wrench designed for driving and loosening screws and bolts, as well as tightening and loosening nuts. Key features include the ABR (Auto Bolt Release) function, which automatically stops the tool when a nut is loosened to prevent it from falling.
Device description
The tool features a 1/2" square tool holder, a belt clip, and an LED work light (PowerLight). The ABR function can be toggled using a dedicated button, with an LED indicator showing its status.
Assembly
Always remove the battery before performing any maintenance, changing tools, or transporting the device to prevent accidental activation. Slide the charged battery into the base of the tool until it locks securely.
Operation
The tool operates via an electric motor, gear, and impact mechanism. The impact mechanism activates once the screw connection becomes tight and the motor is under load. To change the rotational direction, use the switch on the side of the tool. Ensure the rotational direction switch is in the center position when not in use to prevent accidental startup.
Maintenance and cleaning
Regularly clean the ventilation slots to prevent metal dust accumulation, which can cause electrical hazards. Always remove the battery before cleaning or performing maintenance.
Manufacturer information
Bosch
Practical help
Common problems
Tool does not start
Check if the battery is charged and correctly inserted. If the battery is empty, the protection circuit will switch off the tool.
Tool stops automatically
If the ABR function is active, the tool will stop automatically when the nut is loosened.
Before use
- Ensure the battery is fully charged.
- Check that the rotational direction switch is in the desired position.
- Ensure the application tool is securely attached to the tool holder with a locking pin or retaining ring.
- Verify the workpiece is securely clamped.
Specs in practice
- No-load speed
- 0–2500 min-1, the speed of the tool without a load.
Images and diagrams
- Figure A: Changing the application tool (socket).
- Figure B: Setting the rotational direction (Right for tightening, Left for loosening).
- Figure C: Using the ABR (Auto Bolt Release) button and LED indicator.
Model compatibility
- Compatible with all Bosch GBA 18V and ProCORE18V batteries.
- Use only chargers listed in the technical data.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.