Changing the Tool

The dust protection cap (4) largely prevents the penetration of drilling dust into the tool holder during operation. When inserting the tool, make sure that the dust protection cap (4) does not become damaged.

Inserting the SDS plus Application Tool (see figure E)

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 shank of the application tool.
  • Insert the application tool into the tool holder (3) while turning it until it locks automatically.
  • Check that it is locked by pulling on 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 the SDS plus Application Tool (see figure F)

  • Push the locking sleeve (5) back and remove the application tool.

GBH 3-28 DRE

Inserting the application tool

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 (16).
  • Open the keyed chuck (16) by turning it until the tool can be inserted. Insert the tool.
  • Insert the chuck key  into the corresponding holes of the keyed chuck (16) and clamp the tool evenly.
  • Turn the impact/mode selector switch (9) to the "drilling" position.

Removing the application tool

  • Use the chuck key  to turn the sleeve of the keyed chuck (16) anticlockwise until the application tool can be removed.

GBH 3-28 DFR, GBH 3000

Inserting the application tool (see figure G)

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 the keyless quick-change chuck (1).
  • Hold the retaining ring (21) of the keyless quick-change chuck firmly in place. Open the tool holder by turning the front sleeve (20) until the tool can be inserted. Hold the retaining ring (21) in place and firmly tighten the front sleeve (20) by turning it in the direction of the arrow until you hear it click into place.
  • Check that it is seated securely by pulling on the tool.

Note: If the tool holder was unscrewed all the way, a scraping sound may be heard while retightening the tool holder and it may not fully tighten.

In this case, turn the front sleeve (20) in the opposite direction to the arrow by one full turn. This will allow the tool holder to be fully tightened.

  • Turn the impact/mode selector switch (9) to the "drilling" position.

Removing the application tool (see figure H)

  • Hold the retaining ring (21) of the keyless quick-change chuck firmly in place. Open the tool holder by turning the front sleeve (20) in the direction of the arrow until the tool can be removed.