Hitachi DM 20V, Технические данные и руководство по обслуживанию, Страница: 15 / 31

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8-1-3. Removal of the drill chuck
The Drill Chuck [2] is secured to the Spindle [3] with 1/2"-20 UNF (right hand) and Flat Hd. Screw (A) (Left Hand)
M6 x 25 [1] . At first, open the chuck jaw as far as possible and loosen Flat Hd. Screw (A) (Left Hand) M6 x 25 [1]
by turning it clockwise.
a. Hold the drill so that only the Drill Chuck [2] rests firmly and squarely on the edge of a solid bench.
Install the hex. bar wrench into the drill chuck. Turn the drill chuck until the wrench is at about a 30 û angle to
the bench top and strike the wrench sharply with a hammer so the drill chuck turns in the counterclockwise
direction. (Fig. 8)
Pipe
Hex. bar wrench
Fig. 9
Turn it counterclockwise.
Vise
Open-end wrench
b. Hold the Spindle [3] with the open-end wrench secured to the vise as shown in Fig. 9.
Mount the pipe to the hex. bar wrench. Turn the hex. bar wrench counterclockwise to loosen the drill chuck.
(Fig. 9)
Fig. 8
Flat Hd. Screw (A)
(Left Hand) M6 x 25 [1]
Hex. bar wrench
Loosen
If the drill chuck cannot be removed by striking the wrench, do not strike the wrench forcibly and try another
way as follows.