Hitachi DH 18DBL Handling Instructions Manual page 40

Cordless rotary hammers
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DH18DBL
Installing drill chuck and chuck adapter. (Fig. 19)
(1)
Attach the drill chuck to the chuck adaptor.
(2)
The part of the SDS-plus shank is the same as the drill
bit. Therefore, refer to the item of "Mounting the drill
bit" for attaching it.
DH18DBQL with drill chuck holder installed
<Installation/Removal of the drill bit (Fig. 20)>
CAUTION
Prevent accidents, make sure to turn
the switch off and pull out the battery.
When installing or removing the drill
bit, be careful not to hurt hands with the
drill bit.
(1)
Installation
After inserting the drill bit in the drill chuck holder, hold fi rmly the ring by hand and tighten
the sleeve by turning it clockwise (in the direction of "A")
If loosened in use, tighten strongly the sleeve. The harder you tighten the sleeve, the
stronger the gripping force becomes.
(2)
Removal
Hold fi rmly the ring by hand and loosen the sleeve by turning it counterclockwise in the
direction of ("B").
CAUTION
Application of force more than necessary will not only expedite the work, but will
deteriorate the tip edge of the drill bit and reduce the service life of the rotary
hammer in addition.
Drill bits may snap off while withdrawing the rotary hammer from the drilled hole.
For withdrawing, it is important to use a pushing motion.
Do not attempt to drill anchor holes or holes in concrete with the machine set in the
rotation only function.
Do not attempt to use the rotary hammer in the rotation and striking function with
the drill chuck and chuck adapter attached. This would seriously shorten the
service life of every component of the machine.
4.
When driving machine screws
DH18DBL (Fig. 21)
First, insert the bit into the socket in the end of
chuck adapter (D).
Next, mount chuck adapter (D) on the main unit
using procedures described in 4 (1), (2), (3), put
the tip of the bit in the slots in the head of the
screw, grasp the main unit and tighten the screw.
Drill chuck
Chuck adapter
Chuck adapter (D)
40
Grip
Front cap
Part of SDS-plus shank
Fig. 19
Sleeve
B
A
Ring
Fig. 20
Bit
Socket
Front cap
Grip
Fig. 21

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