Tools / Impact Wrenches
Operating Instructions for Hilti SID 14-A/18-A and SIW 14-A/18-A Cordless Impact Driver/Wrench
A comprehensive guide for the Hilti SID 14-A/18-A and SIW 14-A/18-A cordless impact driver/wrench. This manual covers safety, battery charging, tool operation, maintenance, and troubleshooting.
Quick answers from the manual
Quick answer
- The Hilti SID/SIW 14-A/18-A is a cordless impact driver/wrench. To operate, insert a charged battery, select the rotation direction using the forward/reverse switch, and choose the desired torque setting. Always remove the battery before changing bits or sockets. p. 8, 9, 16, 17
Key actions
- Insert battery p. 16
- Change insert tool p. 16, 17
First start
- Charge the battery fully before using it for the first time. p. 15
Problems and fixes
Tool doesn't run
Check battery charge and fitment.
p. 19Maintenance and reset
- Clean ventilation slots with a dry brush and wipe insert tools with an oil-soaked rag. p. 18
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Voltage | 14.4V / 21.6V | Rated voltage of the power tool. | p. 11 |
Where to find it in the PDF
- Parts Diagram p. 2
- Technical Data p. 11, 12
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
The Hilti SID 14-A/18-A and SIW 14-A/18-A are professional-grade cordless impact drivers and wrenches designed for driving and removing screws, nuts, and bolts in wood, metal, masonry, and concrete. Before first use, ensure the battery is fully charged and read all safety instructions. Always wear appropriate personal protective equipment, including eye protection, a hard hat, and ear protection.
Operating controls and parts
The tool features several key components for operation:
- Square drive (SIW) or Hex socket drive (SID): For attaching bits or sockets.
- Control switch: Features electronic speed control.
- Forward/reverse switch: Used to select rotation direction and acts as a transport lock when in the middle position.
- Torque selector switch: Allows selection between three torque settings.
- Battery release buttons: For removing the battery pack.
- Charge status display: LEDs on the battery indicate charge level.
Operation
Fitting and removing the battery: Push the battery into the tool from the rear until it engages with a double click. To remove, press the release buttons and pull the battery out toward the rear.
Changing insert tools: Always set the forward/reverse switch to the middle position or remove the battery before changing tools. For SID models, pull the locking ring forward to insert or remove bits. For SIW models, align the socket hole with the retention ball on the square drive.
Torque selection: Use the torque selector switch to choose between three settings (I, II, III) depending on the application requirements.
Care and maintenance
Tool care: Keep the tool, especially grip surfaces, clean and free from oil and grease. Do not use silicone-based cleaning agents. Clean ventilation slots with a dry brush. Never use steam or high-pressure water for cleaning.
Battery care: Avoid moisture. Charge fully before first use. If performance drops significantly, recharge immediately. Store in a cool, dry place.
Troubleshooting
If the tool does not run, check if the battery is discharged or fitted incorrectly. If the switch is locked, ensure the forward/reverse switch is not in the middle position. If the tool or battery becomes very hot, stop use immediately and contact Hilti Service.
Manufacturer information
Hilti Corporation
Practical help
Common problems
Tool does not run
Check if the battery is discharged or fitted incorrectly. Ensure it clicks into place.
Switch is locked
The forward/reverse switch is in the middle position (transport lock). Push it to the left or right.
Tool or battery becomes very warm
The tool may be overloaded. Use the correct tool for the job. If the issue persists, contact Hilti Service.
Before use
- Charge the battery fully before first use.
- Ensure the forward/reverse switch is in the middle position (locked) before changing tools.
- Check that the battery terminals are clean and free of foreign objects.
- Wear appropriate PPE (eye protection, hard hat, ear protection).
- Check the working area for concealed electric cables or pipes.
Specs in practice
- Rated voltage
- 14.4V or 21.6V depending on the model.
- Torque settings
- Three adjustable settings (I, II, III) to prevent over-tightening.
- Deep discharge protection
- The tool automatically stops discharge to prevent battery damage.
Images and diagrams
- Page 2: Overview of tool parts and battery types.
- Page 4: Battery removal and bit insertion steps.
- Page 5: Socket insertion and switch positions.
- Page 7: Belt hook installation.
Model compatibility
- Use only genuine Hilti batteries and chargers.
- SID models use 1/4" hex socket chucks.
- SIW models use 1/2" square drive or 3/8" square drive chucks.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.