Bedienungsanleitung Hitachi DH20DV (Seite 12 von 74) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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(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. 7.

3. Rotation only

Align the “

” mark with the “ ” mark by rotating

the change lever to set the “Rotation only” mode.

(Fig. 10)

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. 12)

(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.

CAUTIONS

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.

4. When driving wood screws (Fig. 14)

(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

⅜ 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.

5. Using depth gauge (Fig. 13)

(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.

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

shank adapter

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

(Fig. 15)

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

adapter. (Fig. 15)

(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. 16)

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 despite the grease

shortage causes damage to reduce the service life.

CAUTION

A specific grease (FG-6A) is used with this machine,

therefore, the normal performance of the machine may

be badly affected by use of different grease. Please be

sure to let one of our service centers to undertake

replacement of the grease.

MAINTENANCE AND INSPECTION

1. Inspecting the tool

Since use of a dull tool will degrade efficiency and

cause possible motor malfunction, sharpen or

replace the tool as soon as abrasion is noted.

2. Inspecting the mounting screws

Regularly inspect all mounting screws and ensure

that they are properly tightened. Should any of the

screws be loose, retighten them immediately. Failure

to do so could result in serious hazard.

3. Cleaning on the outside

When the power tool is stained, wipe with a soft

dry cloth or a cloth moistened with soapy water.

Do not use chloric solvents, gasoline or paint thinner,

as they melt plastics.

4. Storage

Store the power tool in a place in which the

temperature is less than 40°C and out of reach of

children.

5. Service parts list

A: Item No.

B: Code No.

C: No. Used

D: Remarks

CAUTION

Repair, modification and inspection of Hitachi Power

Tools must be carried out by an Hitachi Authorized

Service Center.

This Parts List will be helpful if presented with the

tool to the Hitachi Authorized Service Center when

requesting repair or other maintenance.

In the operation and maintenance of power tools,

the safety regulations and standards prescribed in

each country must be observed.

MODIFICATIONS

Hitachi Power Tools are constantly being improved

and modified to incorporate the latest technological

advancements.

Accordingly, some parts (i.e. code numbers and/or

design) may be changed without prior notice.

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