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DH24PB3
Инструкция по эксплуатации Страница: 12

Hitachi DH24PB3 [12/82] English

English

(1) Attach the drill chuck to the chuck adapter.

(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.

CAUTION

䡬 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.

䡬 Drill bits may snap off while withdrawing the rotary

hammer from the drilled hole. For withdrawing, it is

important to use a pushing motion.

䡬 Do not attempt to drill anchor holes or holes in

concrete with the machine set in the rotation only

function.

䡬 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 (Fig. 10)

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.

CAUTION

䡬 Exercise care not to excessively prolong driving time,

otherwise, the screws may be damaged by excessive

force.

䡬 Apply the rotary hammer perpendicularly to the screw

head when driving the screw; otherwise, the screw

head or bit will be damaged, or driving force will not

be fully transferred to the screw.

䡬 Do not attempt to use the rotary hammer in the

rotation and striking function with the chuck adapter

and bit attached.

5. When driving wood screws (Fig. 10)

(1) Selecting a suitable driver bit

Employ plus-head screws, if possible, since the driver

bit easily slips off the heads of minus-head screws.

(2) Driving in wood screws

䡬 Prior to driving in wood screws, make pilot holes

suitable for them in the wooden board. Apply the bit

to the screw head grooves and gently drive the screws

into the holes.

䡬 After rotating the rotary hammer at low speed for a

while until the wood screw is partly driven into the

wood, squeeze the trigger more strongly to obtain

the optimum driving force.

CAUTION

Exercise care in preparing a pilot hole suitable for the

wood screw taking the hardness of the wood into

consideration. Should the hole be excessively small

or shallow, requiring much power to drive the screw

into it, the thread of the wood screw may sometimes

be damaged.

6. Using depth gauge (Fig. 11)

(1) Loosen the knob on the side handle, and insert the

depth gauge into the mounting hole on the side

handle.

(2) Adjust the depth gauge position according to the

depth of the hole and thighten the knob securely.

7. How to use the drill bit (taper shank) and the taper

shank adapter

(1) Mount the taper shank adapter to the rotary hammer

(Fig. 12).

(2) Mount the drill bit (taper shank) to the taper shank

adapter (Fig. 12).

(3) Turn the switch ON, and drill a hole in prescribed

depth.

(4) To remove the drill bit (taper shank), insert the cotter

into the slot of the taper shank adapter and strike the

head of the cotter with a hammer supporting on a

rests (Fig. 13).

HOW TO USE THE CORE BIT

(FOR LIGHT LOAD)

When boring penerating large holes use the core bit (for

light loads). At that time use with the center pin and the

core bit shank provided as optional accessories.

1. Mounting

CAUTION

Be sure to turn power OFF and disconnect the plug

from the receptacle.

(1) Mount the core bit to the core bit shank (Fig. 14).

Lubricate the thread of the core bit shank to facilitate

disassembly.

(2) Mount the core bit to the rotary hammer (Fig. 15).

(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 the left or the right so that it does not

fall even if it faces downward (Fig. 16).

2. How to bore (Fig. 17)

(1) Connect the plug to the power source.

(2) A spring is installed in the center pin.

Push it lightly to the wall or the floor straight.

Connect the core bit tip flush to the surface and start

operating.

(3) When boring about 5 mm in depth the position of the

hole will be established. 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 from the

receptacle.

3. Dismounting (Fig. 18)

Remove the core bit shank from the rotary hammer

and strike the head of the core bit shank strongly two

or three times with a hammer holding the core bit,

then the thread becomes loose and the core bit can

be removed.

LUBRICATION

Low viscosity grease is applied to this rotary hammer so

that it can be used for a long period without replacing

the grease. Please contact the nearest service center for

grease replacement when any grease is leaking form

loosened screw.

Further use of the rotary hammer with lock off grease

will cause the machine to seize up reduce the service life.

Hitachi DH24PB3 [12/82] English

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