How To Use The Core Bit (For Light Load) - Hitachi DH26PC Manual De Instrucciones E Instrucciones De Seguridad

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Drill bit
Taper shank
adaptor
(4) To remove the drill bit (taper shank), insert the cotter
into the slot of the taper shank adaptor and strike the
head of the cotter with a hammer supporting on the
rests. (Fig. 17)
Taper shank
adaptor
HOW TO USE THE CORE BIT (FOR LIGHT
LOAD)
When boring penetrating large hole use the core bit (for
light load). At that time use with the center pin and the core
bit shank provided as optional accessories.
1. Mounting
CAUTION
Be sure to switch power OFF and disconnect the
plug from the receptacle.
(1) Mount the core bit to the core bit shank. (Fig. 18)
Lubricate the thread of the core bit shank to facilitate
disassembly.
Core bit
Thread
Core bit shank
12
Front cap
Grip
Fig. 16
Cotter
Rests
Fig. 17
Fig. 18
(2) Mount the core bit shank to the rotary hammer. (Fig. 19)
(3) Insert the center pin into the guide plate until it stops.
(4) Engage the guide plate with the core bit, and turn the
guide plate to left or right so that it does not fall even if
it faces downward. (Fig. 20)
Guide plate
Center pin
Core bit tip
Core bit
2. How to bore (Fig. 21)
(1) Connect the plug to the receptacle.
(2) A spring is installed in the center pin. Push it lightly to
the wall or the fl oor straight. Connect all over the surface
of the core bit tip and start operating.
(3) When boring about 3/16" (5 mm) in depth the position
of the hole will establish. Bore after that removing the
center pin and the guide plate from core bit.
(4) Application of excessive force will not only expedite
the work, but will deteriorate the tip edge of the drill bit,
resulting in reduced service life of the rotary hammer.
CAUTION
When removing the center pin and the guide plate,
turn OFF the switch and disconnect the plug form
the receptacle.
Fig. 19
Fig. 20
Fig. 21