Changing the drill chuck

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, clamp a hex key (11) into the keyed chuck (1).

Place the power tool on a firm surface, e.g. a work bench. Hold the power tool firmly and loosen the keyed chuck (1) by turning the hex key (11) in anticlockwise direction.

A tightly seated keyed chuck is loosened by applying a light blow onto the long end of the hex key (11). Remove the hex key from the keyed chuck and fully unscrew the keyed chuck.

The keyed chuck is fitted in reverse order.

The drill chuck must be tightened using a tightening torque of approx. 10-15 Nm.

Screw the securing screw (10) anticlockwise into the open keyed chuck. Always use a new securing screw because a securing adhesive substance is applied on its thread and is rendered ineffective after repeated use.