# Changing the Tool

The dust protection cap (3) largely prevents the penetration of drilling dust into the tool holder during operation. When inserting the tool, make sure that the dust protection cap (3) does not become damaged.

- Replace a damaged dust protection cap immediately. It is recommended that you have use an after-sales service for this.

## Changing the tool (SDS plus)

### Inserting SDS-plus application tools (see figure C)

The SDS-plus drill chuck enables you to change the application tool easily and conveniently without needing to use additional tools.

- Clean and lightly grease the insertion end of the application tool.
- Insert the application tool into the tool holder while turning it until it locks automatically.
- Check the latching by pulling the tool.

As a requirement of the system, the SDS-plus application tool can move freely. This causes a certain radial run-out at no-load, which has no effect on the accuracy of the drill hole, as the drill bit centres itself upon drilling.

### Removing SDS-plus application tools (see figure D)

- Push the locking sleeve (4) back and remove the application tool.

## Changing the Keyed Chuck

### Inserting the application tool (see figure E)

Note: Application tools that do not have SDS plus must not be used for hammer drilling or chiselling. Tools without SDS plus and their drill chucks are damaged by hammer drilling or chiselling.

- Insert a keyed chuck (19).
- Open the keyed chuck (19) by turning it until the tool can be inserted. Insert the tool.
- Insert the chuck key (21) into the corresponding holes of the keyed chuck (19) and clamp the tool evenly.
- Turn the impact/mode selector switch (13) to the "drilling" position.

### Removing the application tool (see figure F)

- Use the chuck key (21) to turn the sleeve of the keyed chuck (19) anticlockwise until the application tool can be removed.