Changing the drill chuck (see figure C–E)
- Pull the plug out of the socket before carrying out any work on the power tool.
A securing screw (10) protects the keyed chuck (1) from being accidentally separated from the drill spindle.
Open the keyed chuck (1) fully and unscrew the securing screw (10) clockwise. Note that the securing screw has a left-hand thread.
When the securing screw (10) is securely seated, place a screwdriver on the screw head and undo the securing screw by hitting the handle of the screwdriver.
To remove the keyed chuck (1), place an open-ended spanner (SW 27) onto the nut on the drive spindle.
Place the power tool on a firm surface, e.g. a work bench. Insert the chuck key (4) into one of the three holes of the keyed chuck (1) and release the keyed chuck (1) with this lever by turning it in rotational direction ➊. A keyed chuck that is fixed in place can be released by applying light force to the chuck key (4). Remove the chuck key (4) from the keyed chuck and completely unscrew the keyed chuck.
- Keep the cone of the drill spindle and the hole of the drill chuck free of grease and dirt.
To install the keyed chuck (1), turn the nut on the drive spindle clockwise as far as it will go.
Push the keyed chuck onto the drive spindle until it is securely seated, but do not use force when doing so.
Use a rubber hammer to lightly hit the front side of the keyed chuck (1) in order to ensure that the keyed chuck is securely seated. When doing so, ensure that the clamping jaws of the keyed chuck do not protrude to avoid damaging the chuck.