Hitachi DH20V User manual

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English

4

GENERAL OPERATIONAL PRECAUTIONS

WARNING! When using electric tools, basic safety

precautions should always be followed to reduce the risk

of fire, electric shock and personal injury, including the

following.

Read all these instructions before operating this product

and save these instructions.

For safe operations:

1. Keep work area clean. Cluttered areas and benches

invite injuries.

2. Consider work area environment. Do not expose

power tools to rain. Do not use power tools in

damp or wet locations. Keep work area well lit.

Do not use power tools where there is risk to

cause fire or explosion.

3. Guard against electric shock. Avoid body contact

with earthed or grounded surfaces. (e.g. pipes,

radiators, ranges, refrigerators).

4. Keep children away. Do not let visitors touch the

tool or extension cord. All visitors should be kept

away from work area.

5. Store idle tools. When not in use, tools should

be stored in a dry, high or locked up place, out

of reach of children.

6. Do not force the tool. It will do the job better and

safer at the rate for which it was intended.

7. Use the right tool. Do not force small tools or

attachments to do the job of a heavy duty tool.

Do not use tools for purposes not intended; for

example, do not use circular saw to cut tree

limbs or logs.

8. Dress properly. Do not wear loose clothing or

jewellery, they can be caught in moving parts.

Rubber gloves and non-skid footwear are recom-

mended when working outdoors. Wear protecting

hair covering to contain long hair.

9. Use eye protection. Also use face or dust mask

if the cutting operation is dusty.

10. Connect dust extraction equipment.

If devices are provided for the connection of dust

extraction and collection facilities ensure these are

connected and properly used.

11. Do not abuse the cord. Never carry the tool by

the cord or yank it to disconnect it from the

receptacle. Keep the cord away from heat, oil and

sharp edges.

12. Secure work. Use clamps or a vise to hold the

work. It is safer than using your hand and it frees

both hands to operate tool.

13. Do not overreach. Keep proper footing and balance

at all times.

14. Maintain tools with care. Keep cutting tools sharp

and clean for better and safer performance. Follow

instructions for lubrication and changing accesso-

ries. Inspect tool cords periodically and if dam-

aged, have it repaired by authorized service center.

Inspect extension cords periodically and replace,

if damaged. Keep handles dry, clean, and free

from oil and grease.

15. Disconnect tools. When not in use, before serv-

icing, and when changing accessories such as

blades, bits and cutters.

16. Remove adjusting keys and wrenches. Form the

habit of checking to see that keys and adjusting

wrenches are removed from the tool before turning

it on.

17. Avoid unintentional starting. Do not carry a

plugged-in tool with a finger on the switch. Ensure

switch is off when plugging in.

18. Use outdoor extension leads. When tool is used

outdoors, use only extension cords intended for

outdoor use.

19. Stay alert. Watch what you are doing. Use com-

mon sense. Do not operate tool when you are tired.

20. Check damaged parts. Before further use of the

tool, a guard or other part that is damaged should

be carefully checked to determine that it will

operate properly and perform its intended func-

tion. Check for alignment of moving parts, free

running of moving parts, breakage of parts,

mounting and any other conditions that may affect

its operation. A guard or other part that is damaged

should be properly repaired or replaced by an

authorized service center unless otherwise

indicated in this handling instructions. Have

defective switches replaced by an authorized

service center. Do not use the tool if the switch

does not turn it on and off.

21. Warning

The use of any accessory or attachment, other

than those recommended in this handling

instructions, may present a risk of personal injury.

22. Have your tool repaired by a qualified person.

This electric tool is in accordance with the relevant

safety requirements. Repairs should only be carried

out by qualified persons using original spare parts.

Otherwise this may result in considerable danger

to the user.

PRECAUTIONS ON USING HAMMER DRILL

1. Wear earplugs to protect your ears during operation.

2. Do not touch the bit during or immediately after

operation. The bit becomes very hot during opera-

tion and could cause serious burns.

3. Before starting to break, chip or drill into a wall,

floor or ceiling, thoroughly confirm that such items

as electric cables or conduits are not buried inside.

5

English

SPECIFICATIONS

Voltage (by areas)* (110V, 220V, 230V, 240V)

Input* 460W

No-load speed 0-900/min

Full-load impact rate 3500/min

Capacity: concrete 20 mm

steel 13 mm

wood 15 mm

Weight (without cord and side handle) 3.1 kg

* Be sure to check the nameplate on product as it is subject to change by areas.

STANDARD ACCESSORIES

(1) Case (Molded plastic) ................................................ 1

(2) Side handle ................................................................. 1

(3) Stopper........................................................................ 1

(4) Dust cup ...................................................................... 1

Standard accessories are subject to change without

notice.

Drill bit (square shank)

OPTIONAL ACCESSORIES (sold separately)

1. Drilling anchor holes (rotation + striking)

䡬 Drill (square shank) (Cannot be attached to the model exclusively intended for the SDS bit.)

Outer Total Outer Total Outer Total

diameter length diameter length diameter length

5.0 mm 110 mm 8.5 mm 200 mm 16.0 mm 350 mm

5.0 mm 150 mm 9.0 mm 150 mm 17.0 mm 200 mm

5.5 mm 110 mm 12.0 mm 150 mm 19.0 mm 150 mm

6.5 mm 110 mm 12.0 mm 200 mm 19.0 mm 350 mm

6.5 mm 150 mm 12.7 mm 150 mm 20.0 mm 350 mm

7.0 mm 150 mm 14.0 mm 150 mm

8.0 mm 110 mm 15.0 mm 150 mm

8.0 mm 150 mm 16.0 mm 200 mm

䡬 Drill bit (taper shank) and taper shank adapter (Cannot be attached to the model exclusively intended for

the SDS bit.)

Drill bit (taper shank) Taper shank adapter

Cotter

English

6

APPLICATIONS

Rotation and striking function:

䡬 Drilling anchor holes

䡬 Drilling holes in concrete

䡬 Drilling holes in tile

Rotation only function:

䡬 Drilling in steel or wood (with optional accessories)

PRIOR TO OPERATION

1. Power source

Ensure that the power source to be utilized conforms

to the power requirements specified on the product

nameplate.

2. Power switch

Ensure that the power switch is in the OFF position.

If the plug is connected to a receptacle while the

power switch is in the ON position, the power tool

will start operating immediately, which could cause

a serious accident.

Outer diameter

11.0 mm

12.3 mm

14.3 mm

14.5 mm

17.5 mm

Taper shank adapter formed A-taper or

B-taper is provided as an optional acces-

sory, but the drill bit for it is not provided.

Taper mode Applicable drill bit

Morse taper

(No. 1)

A-taper

B-taper

11.0 mm

12.3 mm

14.3 mm

14.5 mm

17.5 mm

Drill bit

(taper shank)

3. Drilling holes in steel or wood (rotation only)

䡬 Drill chuck and chuck adapter (Also available for the model exclusively intended for the SDS bit.)

2. Anchor setting (rotation + striking)

䡬 Anchor setting adapter (for electric hammer drill)

Anchor setting adapter

(for electric hammer drill)

Anchor size: W1/4”, W5/16”, W3/8”

䡬 Anchor setting adapter (for manual hammer)

Anchor setting adapter

(for manual hammer)

Anchor size: W1/4”, W5/16”, W3/8”, W1/2”

Optional accessories are subject to change without notice.

13 mm drill chuck

(including chuck wrench)

7

English

3. Extension cord

When the work area is removed from the power

source, use an extension cord of sufficient thickness

and rated capacity. The extension cord should be

kept as short as practicable.

4. Mounting the drill bit (Fig.1)

Please operate the model exclusively intended for

the SDS bit as described below.

Fully shift the slide grip of the chuck section in the

direction of arrow and insert the drill bit while rotating

it slowly. Match the drill bit to the square hole in

the slide grip and firmly insert it. The drill bit is firmly

locked in place when the slide grip is returned to

its original position. Remove the drill bit in the reverse

order of installation. Do not fail to use HITACHI

GENUINE DRILL BIT. Although the chuck section is

of dust-proof construction, the movement of slide

grip may become dull due to concrete dust after the

machine has been used for long periods. Lubricate

the sliding part of the slide grip.

5. Mounting the dust cup (Fig.2)

When it is necessary to drill a hole with the drill

bit facing upward, such as drilling holes in a ceiling,

use of a dust cup will minimize falling particles to

attain easy drilling work. Mount the dust cup to the

drill bit as shown in Fig.2.

When using a large drill bit, enlarge the hole in the

center when mounting it on the drill bit.

HOW TO USE

Please operate the model exclusively intended for the

SDS bit as described below.

1. Switch operation

The rotational speed of the drill bit can be controlled

by varying the amount that the trigger switch is

pulled. Speed is low when the trigger switch is

pulled slightly and increaes when the switch is

pulled more.

2. Rotation + striking

This hammer drill can be set to rotation and striking

mode by rotating the selector lever fully counter-

clockwise to

mark. (Fig.3)

(1) Mount the drill bit

(2) Pull the trigger switch after placing the drill bit tip

in the drilling position. (Fig.4)

(3) Pushing the hammer drill forcibly is not necessary.

It is sufficient to push slightly so that drill dust

comes out gradually.

CAUTION

When the drill bit touches construction iron bar, the

bit will stop immediately and the hammer drill react

to revolving. Therefore, grip the side handle and

handle tightly.

3. Rotation only

The hammer drill can be set to rotation only mode

by rotating the selector lever fully clockwise to

mark. (Fig.5)

(1) Attach the drill chuck and chuck adapter (optional

accessories). The hammer drill can be used for

drilling of steel and wood materials with these

accessories.

In order to attach the accessories, fully withdraw

the slide grip of chuck section in the direction of

the arrow in Fig.6.

Slightly insert the chuck adapter into the square

hole of the slide grip by rotating; fully insert the

chuck adapter after it is matched with the square

hole. Return the slide grip to its original position

so that the chuck adapter is locked tight.

For removal of the accessories, reverse the above

procedures.

(2) Application of excessive force will not expedite the

work, but will only deteriorate the tip edge of the

drill bit resulting in reduced service life of the

hammer drill.

(3) When the hole is nearly completed, the drill bit

sometimes breaks. When the hole is nearly

completed, release the pushing force.

CAUTION

After drilling is finished, always disconnect the plug

from the receptacle.

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

shank adapter

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

(Fig.7)

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

adapter. (Fig.7)

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

depth.

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

cotter into the slot of the taper shank adapter that

is supported by the rest and strike the head of the

cotter with a hammer (Fig.8).

5. How to use the stopper

Fixing the stopper (Fig.9)

(1) Loosen the side handle and insert the linear part

of the stopper into the fitting hole of the handle

holder from the chuck section side.

(2) Move the stopper to its prescribed position while

the side handle is left loosened, then rotate the side

handle clockwise to fix the stopper.

LUBRICATION

Low viscosity grease should be applied to this hammer

drill so that it can be used for a long period without

replacing the grease. Please contact the nearst service

agent for grease replacement if grease leaks from

loosened screws.

Continued use of the hammer drill despite a grease

shortage will cause reduction of the service life.

CAUTION

The specified grease should be used in this machine.

Therefore, the normal performance of the machine may

be negatively affected by use of another grease. Please

be sure to ask our service agent for replacement of the

grease.

MAINTENANCE AND INSPECTION

CAUTION

Be sure to run power OFF and disconnect the plug

during maintenance and inspection.

1. Inspecting the drill bits

Since use of a dull drill bit will cause motor

malfunctioning and reduced efficiency, replace the

drill bit with a new one or resharpen without delay

when abrasion is noted.

English

8

ALLGEMEINE VORSICHTSMASSNAHMEN

WARNUNG! Bei der Verwendung von Elektrowerkzeugen

müssen immer die grundlegenden Vorsichtsmaßnahmen

befolgt werden, um das Risiko von Feuer, elektrischem

Schlag und persönlicher Verletzung und den

nachfolgenden Punkten zu vermeiden.

Lesen Sie diese Anweisungen völlig, bevor Sie dieses

Erzeugnis verwenden, und bewahren Sie diese

Anweisungen auf.

Für sicheren Betrieb:

1. Der Arbeitsplatz sollte sauber gehalten werden.

Unaufgeräumte Arbeitsplätze und Werkbänke

erhöhen die Unfallgefahr.

2. Die Betriebsbedingungen beachten.

Elektrowerkzeuge sollten nicht dem Regen

ausgesetzt werden.

Ebenfalls sollten Sie nicht an feuchten oder nassen

Plätzen gebraucht werden.

Der Arbeitsplatz sollte gut beleuchtet sein.

Verwenden Sie Elektrowerkzeuge nicht an Orten,

an denen die Gefahr von Feuer oder Explosion

besteht.

3. Schutzmaß nahmen gegen elektrische Schläge

treffen. Darauf achten, daß das Gehäuse nicht in

Kontakt mit geerdeten Flachen kommt, z. (z.B.

Rohre, Radiatoren, Elektroherde, Kühlschränke).

4. Kinder sollten vom Gerät ferngehalten werden.

Vermeiden, daß andere Personen mit dem

Werkzeung oder Verlängerungskabel in Kontakt

kommen.

5. Nicht benutzte Werkzeuge sollten sicher aufbewahrt

werden. Sie sollten an einem trockenen und

verschließbaren Ort aufbewahrt werden, damit

Kinder sie nicht in die Hände bekommen.

6. Werkzeuge sollten nicht mit übermäßiger Gewalt

verwendet werden. Ihre Leistung ist besser und

sicherer, wenn sie mit der vorgeschriebenen

Geschwindigkeit verwendet werden.

7. Nur die korrekten Werkzeuge verwenden. Niemals

ein kleineres Werkzeug oder Zusatzgerat für

Arbeiten verwenden, die Hochleistungsgerate

erfordern. Nur Werkzeuge verwenden, die dem

Verwendungszweck entsprechen, d.h. niemals eine

Kreissäge zum Sägen von Ästen oder

Baumstämmen verwenden.

8. Die richtige Kleidung tragen. Keine lose Kleidung

oder Schmuck tragen, da sich lose Kleidungsstücke

in den bewegenden Teilen verfangen kònnen. Bei

Arbeiten im Freien sollten Gummihandschuhe und

rutschfeste Schuhe getragen werden.

9. Es sollte eine Sicherheitsbrille getragen werden.

Bei Arbeiten mit Staubentwicklung sollte eine

Gesichtsoder Staubmaske getragen werden.

10. Schließen Sie eine Staubabsaugvorrichtung an.

Wenn Vorrichtungen für den Anschluß von

Staubabsaug- und -sammelvorrichtungen

vorhanden sind, so stellen Sie sicher, daß diese

angeschlossen sind und richtig verwendet werden.

11. Niemals das Kabel mißbrauchen. Ein Werkzeug

niemals am Kabel tragen oder bei Abtrennung von

der Steckdose das Kabel harausreißen. Das Kabel

sollte gegen Hitze, Öl und scharfe Kanten geschützt

werden.

12. Den Arbeitsplatz gut absichern. Zwingen oder einen

Schraubstock zur Befestigung des Werkstücks

verwenden. Das ist sicherer als die Benutzung der

Hände und macht beide Hände zur Bedienung des

Werkzeugs frei.

13. Sich niemals weit überbeugen. Immer einen festen

Stand und ein sicheres Gleichgewicht bewahren.

Deutsch

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. Maintenance of the motor

The motor unit winding is the very ”heart” of the

power tool. Exercise due care to ensure the winding

does not become damaged and/or wet with oil or

water.

4. Inspecting the carbon brushes (Fig.10)

The motor employs carbon brushes which are

consumable parts. When they become worn to or

near the ”wear limit”, it could result in motor trouble.

When an auto-stop carbon brush is equipped, the

motor will stop automatically.

At that time, replace both carbon brushes with new

ones which have the same carbon brush numbers

shown in the figure. In addition, always keep carbon

brushes clean and ensure that they slide freely

within the brush holders.

䡬 Replacing a carbon brush:

Disassemble the brush cap with a minus-head screw-

driver. The carbon brush can then be easily removed.

NOTE

Due to HITACHI’s continuing program of research and

development, the specigications herein are subject to

change without prior notice.

IMPORTANT

Correct connection of the plug

The wires of the main lead are coloured in accordance

with the following code:

Blue: -Neutral

Brown: -Live

As the colours of the wires in the main lead of this

tool may not correspond with the coloured markings

identifying the terminals in your plug, proceed as follows:

The wire coloured blue must be connected to the

terminal marked with the letter N or coloured black.

The wire coloured brown must be connected to the

terminal marked with the letter L or coloured red.

Neither core must be connected to the earth terminal.

NOTE

This requirement is provided according to BRITISH

STANDARD 2769: 1984.

Therefore, the letter code and colour code may not be

applicable to other markets except The United Kingdom.

Information concerning airborne noise and vibration

The measured values were determined according to

EN50144.

The typical A-weighted sound pressure level: 92 dB (A)

The typical A-weighted sound power level: 105 dB (A)

Wear ear protection.

The typical weighted root mean square acceleration

value: 7.5 m/s

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32

The exploded assembly drawing should be used only for authorized service center.

33

Item

Parts Name

No.

1 O-Ring (P 18)

2 Steel Ball D6.35

3 Cylinder

4 Striker

5 O-Ring

6 Third Gear

7 Piston

8 Piston Pin

9 Connecting Rod

10 Seal Packing (B)

11 O-Ring (S-34)

12 Oil Cap

14 Name Plate

15 Rivet D2.5 × 4.8

16A Hex. Socket Hd. Bolt (W/Flange) M5 × 25

19 Cylinder Case

20 Spring Holder

21 Retainer Spring (B)

22 Oil Seal

23 Retaining Ring For D30 Shaft

24 Ball Bearing (6906)

25 Urethane Ring

26 Pipe

27 Cap Cover

28 Retaining Ring D22

29 Seal Cap

30A Front Cap Ass’y

31 Urethane Washer

33 Slide Grip

34 Steel Ball or Needle Roller

35 Retainer Sleeve

36 O-Ring (D)

37 O-Ring(P-9)

38 Second Hammer

39 Retainer Spring (A)

40 HITACHI Label

41 Third Pinion

42 Ball Bearing (6001DDUCMPS2S)

43 Washer

44 Second Gear

45 Stopper Washer

Item

Parts Name

No.

46 Steel Ball D3.97

47 Clutch Plate

48 Spring Plate

49 Belleville Spring

50 Bushing

51 Ball Bearing (608VVMC2EPS2L)

52 Retaining Ring For D8 Shaft

53 Crank Case

54 Crank Shaft

55 Steel Ball D4.76

56 Ball Bearing (6202DDUCMPS2S)

57 Bearing Cover

58 First Gear

59 Seal Lock Screw (W/Sp. Washer) M4 × 12

60 Clutch Spring

61 Clutch Shaft

62 Thrust Washer

63 Stopper Spring

64 Gear Cover

65 O-Ring (S26)

66 Ball Bearing (6000DDUCMPS2S)

67 Armature

68 Hex. Hd. Tapping Screw D5 × 45

70 Internal Wire

71 Brush Terminal

72 Bearing Lock

73 Ball Bearing (626VVMC2ERPS2S)

74A Hex. Socket Hd. Bolt (W/Flange) M5 × 50

76 Brush Holder

77 Carbon Brush

78 Brush Cap

79 Ball Spring

80 Steel Ball D3.175

81 O-Ring

82 Change Lever

83 Fan Guide

84 Stator Ass’y

85 Washer (A)

86 Tube (D)

87 Housing Ass’y

88 Hex. Socket Set Screw M5 × 8

34

Item

Parts Name

No.

89 Mark Plate

90 Tapping Screw (W/Washer) D4 × 25

91 Handle Cover (B)

92 Support (B)

93A Noise Suppressor

94 Connector

95 Pillar Terminal

96 Switch (Pillar Type)

97 Plate

99 Handle (B)

100 Machine Screw (W/Washers) M5 × 25

101A Tapping Screw (W/Flange) D5 × 25

102 Cord

103 Connector

104 Tube (D)

105 Tapping Screw (W/Flange) D4 × 16

106 Cord Clip

107 Cord Armor

108 Tube (D)

109 Retainer Sleeve Ass’y

110 Tapping Screw (W/Flange) D4 × 12

501 Dust Cup

502B Case

503 Stopper Rod

504 Side Handle

505 Rod Holder

506 Side Handle Holder

507 Band

508 Square Bolt M8

509 Side Handle Ass’y

Parts are subject to possible modification without

notice due to improvements.

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802

Code No. 99508375 N

Printed in Japan

Italiano

DICHIARAZIONE DI CONFORMITÀ CE

Si dichiara sotto nostra responsabilità che questo

prodotto è conforme agli standard o ai documenti

standardizzati EN50144, HD400, EN55014, EN60555

e/o EN50082-1 conforme alle direttive 73/23/CEE,

89/392/CEE e/o 89/336/CEE del concilio.

* Questa dichiarazione è applicabile ai prodotti cui sono

applicati i marchi CE.

Nederlands

EC VERKLARING VAN CONFORMITEIT

Wij verklaren onder eigen verantwoordelijkheid dat dit

produkt conform de richtlijnen of gestandardiseerde

documenten EN50144, HD400, EN55014, EN60555 en/

of EN50082-1 voldoet aan de eisen van EEG Bepalingen

73/23/EEG, 89/392/EEG en/of 89/336/EEG.

* Deze verklaring is van toepassing op produkten

voorzien van de CE-markeringen.

Español

DECLARACIÓN DE CONFORMIDAD DE LA CE

Declaramos bajo nuestra única responsabilidad que

este producto está de acuerdo con las normas o con

los documentos de normalización EN50144, HD400,

EN55014, EN60555 y/o EN50082-1, según indican las

Directrices del Consejo 73/23/CEE, 89/392/CEE y/o 89/

336/CEE.

* Esta declaración se aplica a los productos con marcas

de la CE.

English

EC DECLARATION OF CONFORMITY

We declare under our sole responsibility that this

product is in conformity with standards or standard-

ized documents EN50144, HD400, EN55014, EN60555

and/or EN50082-1 in accordance with Council Directives

73/23/EEC, 89/392/EEC and/or 89/336/EEC.

* This declaration is applicable to the product affixed

CE marking.

Deutsch

ERKLÄRUNG ZUR KONFORMITÄT MIT CE-REGELN

Wir erklären mit alleiniger Verantwortung, daß dieses

Produkt den Standards oder standardisierten

Dokumenten EN50144, HD400, EN55014, EN60555 und/

oder EN50082-1 in Übereinstimmung mit den Direktiven

des Europarats 73/23/EWG, 89/392/EWG und/order 89/

336/EWG entspricht.

*Diese Erklärung gilt für Produkte, die die CE-

Markierung tragen.

Français

DECLARATION DE CONFORMITE CE

Nous déclarons sous notre seule et entière respon-

sabilité que ce produit est conforme aux normes ou

documents normalisés EN50144, HD400, EN55014,

EN60555 et/ou EN50082-1 en accord avec les Directives

73/23/CEE, 89/392/CEE et/ou 89/336/CEE du Conseil.

*Cette déclaration s’applique aux produits désignés CE.

Hitachi Power Tools Europe GmbH

Siemensring 34, 47877 Willich, F. R. Germany

Hitachi Koki Co., Ltd.

Nippon Building, 6-2, Ohtemachi 2-chome,

Chiyoda-ku, Tokyo, Japan

K. Mitsuishi

95

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