Manual Hitachi DH 18DL (page 18 of 108) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

NOTE:

Pay attention to the spring orientation. Install the

spring with larger diameter away from you. (Fig.

12)

(3) Using as an auxiliary light

(a) Press the switch to turn off the light.

If forgotten, the light will turn off automatically

after 15 minutes.

(b) The direction of the light can be adjusted within

the range of hook positions 1 - 5. (Fig. 13)

⅜ Lighting time

AAAA manganese batteries: approx. 15 hrs.

AAAA alkali batteries: approx. 30 hrs.

CAUTION:

Do not look directly into the light.

Such actions could result in eye injury.

(4) Replacing the batteries

(a) Loosen the hook screw with a phillips-head

screwdriver (No. 1). (Fig. 14)

Remove the hook cover by pushing in the

direction of the arrow. (Fig. 15)

(b) Remove the old batteries and insert the new

batteries. Align with the hook indications and

position the plus (+) and minus (–) terminals

correctly. (Fig. 16)

with the protuberance of the hook cover, press

the hook cover in the direction opposite to that

of the arrow shown in Fig. 15 and then tighten

the screw.

Use commercially available AAAA batteries

(1.5 V).

NOTE:

Do not tighten the screw excessively. Such action

could strip the screw threads.

CAUTION:

⅜ Failure to observe the following can result in battery

leakage, rust or malfunction.

Position the plus (+) and minus (–) terminals

correctly.

Replace both batteries at the same time. Do not mix

old and new batteries.

Remove exhausted batteries from the hook

immediately.

⅜ Do not discard batteries together with normal trash

and do not throw batteries into fire.

⅜ Store batteries out of the reach of children.

⅜ Use batteries correctly in accordance with the battery

specifications and indications.

2. Switch operation

⅜ When the switch trigger is depressed, the tool

rotates. When the switch trigger is released, the tool

stops.

⅜ The rotational speed of the rotary hammer can be

controlled by varying the amount that the switch

trigger is pulled. Speed is low when the switch

trigger is pulled slightly and increases as the switch

trigger is pulled more.

⅜ When releasing the switch trigger, the brake will

be applied for immediate stopping.

3. Rotation + Hammering

Turn the change lever fully in the direction of the

“

” mark to set “rotation + hammering”.

(1) Mount the drill bit.

(2) Pull the trigger switch after applying the drill bit

tip to the drilling position. (Fig. 17)

(3) Pushing the rotary hammer forcibly is not necessary

at all. Pushing slightly so that drill dust comes out

gradually is just sufficient.

CAUTION:

When the drill bit touches construction iron bar, the

bit will stop immediately and the rotary hammer

will react to revolve. Therefore please grip the side

handle and handle tightly as shown in Fig. 18.

4. Rotation only

Turn the change lever fully in the direction of the

“

” mark to set “rotation only”. (Fig. 17)

To drill a wood or metal material using the optional

drill chuck and chuck adapter, proceed as follows.

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.

CAUTION:

⅜ Application of force more than necessary will

not only expedite work at all, but will deteriorate

the tip edge of the drill bit and reduce the

service life of the rotary hammer in addition.

⅜ Drill bit may snap off while withdrawing the

rotary hammer from the drilled hole. For

withdrawing, it is important to use a pushing

motion.

⅜ Do not attempt to use the rotary hammer in the

rotation and striking mode with the drill chuck

and chuck adapter attached. This would seriously

shorten the service life of every component of

the machine.

5. When driving wood screws (Fig. 20)

(1) Selecting a suitable driver bit

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

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

(2) Tightening wood screws

Prior to tightening 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 in the holes.

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. 21)

(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 tighten the knob bolt 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. 22)

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

adapter. (Fig. 22)

(3) Turn the switch ON, and drill a hole to 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 the rest. (Fig. 23)

01Eng_DH14DL_WE 11/6/08, 20:2817

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Hitachi DH 18DL Manual

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