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OPTIMUM
M A S C H I N E N - G E R M A N Y
4.9
Disassembly, assembly of drill chucks and drill bits
DH26GTV ǀ DH28GSV
4.9.1 Use of the quick-action drill chuck
The drill chuck consists of two parts (1 and 2).
Hold the upper part (No.1) of the drill chuck. With the bottom part of the drill chuck (No. 2) it
is possible to tighten or loosen the jaws of the quick-action drill chuck.
Turn the tool (drill) firmly.
Upper part (No. 1)
quick-action drill
chuck
Bottom part (No. 2)
quick-action drill
chuck
Tool (drill)
CAUTION!
Make sure that the clamped tool is firmly and correctly fitted.
4.9.2 Disassembly with drill drift
The drill chuck and the taper mandrel are loosened from the drill spindle by means of a drill
drift.
WARNING!
Only disassemble the drill chuck if the geared upright drill is disconnected from the
electrical supply.
Switch off the geared upright drill on the main switch or disconnect the mains plug.
Move the drill sleeve down.
Turn the drilling spindle until the openings of the sleeve and of the drilling spindle are super-
imposed.
Loosen the taper mandrel of the drill chuck with the help of a drill drift.
Drill drift
Drill sleeve
Upper part of the
quick-action drill
chuck
Bottom part of the
quick-action drill
chuck
GB
DH26GTV | DH28GSV
Page 40
Img. 4-6: Quick-action drill chuck
Img. 4-7: Disassembly with drill drift
Original operating instructions
Version 1.2.5 dated 2017-03-10
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