DV 20V2 - Drill HITACHI - Free user manual and instructions

Product Type	Impact Drill
Model	DV20V2
Brand	Hitachi
Input Power	620 W
Voltage	110-240 V (depending on region)
Reversible	Yes
Speed Settings	2 (Low/High)
No Load Speed (Low)	0 - 1100 min⁻¹
No Load Speed (High)	0 - 2600 min⁻¹
Drilling Capacity (Steel)	13 mm (Low), 8 mm (High)
Drilling Capacity (Concrete)	20 mm (Low), 10 mm (High)
Drilling Capacity (Wood)	35 mm (Low), 20 mm (High)
Full Load Impact Rate (Low)	17600 min⁻¹
Full Load Impact Rate (High)	41600 min⁻¹
Weight	2.3 kg
Chuck Type	Keyed, 13 mm capacity
Standard Accessories	Chuck wrench, side handle, depth stopper
Optional Accessories	Carrying case, drill bits, driver bits
Sound Pressure Level	102 dB(A)
Sound Power Level	115 dB(A)
Vibration (Impact Drilling)	14.0 m/s²
Safety Features	Reversing switch lock, double insulation, carbon brush wear indicator
Maintenance	Regular inspection of carbon brushes and mounting screws
Repairability	Replaceable carbon brushes, parts available via authorized service centers

Frequently Asked Questions - DV 20V2 HITACHI

How do I change the direction of rotation on the DV20V2?

Use the reversing switch lever located near the trigger. Push the R-side for clockwise rotation (viewed from rear) and the L-side for counterclockwise. Always turn off the switch before changing direction to avoid motor damage.

What is the difference between IMPACT and ROTATION modes?

IMPACT mode (impact plus rotation) is for drilling into hard materials like concrete, stone, and tile. ROTATION mode (rotation only) is for drilling into metal, wood, plastic, and for screwdriving. Slide the change plate to select the mode.

How do I adjust the speed on the Hitachi DV20V2?

The drill has a variable speed trigger: squeeze lightly for slow speed, harder for faster speed. Additionally, rotate the gear shift dial to select high speed (2) or low speed (1) for different torque and speed requirements.

What are the maximum drilling capacities?

In low speed: steel 13 mm, concrete 20 mm, wood 35 mm. In high speed: steel 8 mm, concrete 10 mm, wood 20 mm. Always use appropriate drill bits.

How do I attach the side handle and depth gauge?

Loosen the knob bolt on the side handle, slide it onto the gear cover aligning the projection with the groove, then tighten. To attach the depth gauge, insert it into the U-shaped groove on the handle, adjust to desired depth, and tighten the knob bolt.

When should I replace the carbon brushes?

Check the carbon brushes periodically. Replace them when they are worn to or near the wear limit (visible line). Use only brushes with the same No. as indicated in the manual. Clean the brush holders and ensure free sliding.

Can I use the drill in IMPACT mode for all materials?

No. Use IMPACT mode only for hard materials like concrete, marble, granite, or tiles. Using impact on materials that can be drilled by rotation alone reduces efficiency and may damage the drill bit.

How do I disassemble the handle to access internal parts?

Remove the three tapping screws on handle (A) and two on handle (B). Then carefully remove handle (B) only. Do not remove handle (A) as it may damage internal wiring. Reassemble in reverse order, ensuring wires are not pinched.

What safety precautions should I take before drilling into walls?

Always check for concealed electrical cables, pipes, or studs using a detector. Wear eye protection and ear protection. Secure the workpiece with clamps, not your hands.

How do I maintain the drill for long life?

Keep the drill clean and dry. Inspect the power cord and plug regularly. Lubricate moving parts as instructed. Replace worn carbon brushes promptly. Store in a dry place out of reach of children.

USER MANUAL DV 20V2 HITACHI

Line drawing of a DV20V2 electric drill with handle and screwdriver (no text or symbols on the device itself)

Read through carefully and understand these instructions before use.

Bruksanvisning

Brugsanvisning

Bruksanvisning

Käyttöohjeet

Handling Instructions

The exploded assembly drawing should be used only for authorized service center.
DV20V2

Item No.	Part Name
44	Internal Wire (A)
45	Internal Wire (C)
46	Internal Wire (C)
47	Tube (D)
48	Support (B)
49	Noise Suppressor
50	Tapping Screw D4 · 16
51	Cord Clip
52	Cord Armor
53	Tube (D)
54	Cord
56A	Reversing Switch
57B	Flat Hd. Screw (A) (Left Hand) M6 · 25
59	CR Unit
60	Oil Seal
61A	Dust Seal
501	Side Handle
502	Depth Stopper

Parts are subject to possible modification without notice due to improvements. The drawing and the list are parts structural drawing and parts list of model DV20V2. For other models refer to the drawing and the list.

Item No.	Part Name
1	Chuck Wrench 10G
2	Drill Chuck 13VLR
3A	Retaining Ring For D32 Hole
4A	Spindle
5	Steel Ball D4.76
6	Ball Bearing (6002DDUCMPS2S)
7A	Ratchet (A)
8	Spring (B)
10A	Gear Cover Ass'y
11	Spring
12	Low Speed Gear
13	Clutch Disc
14	High Speed Gear
15	Washer
16	Outer Cover
17	Inner Cover
18	Changing Plate
19	Ball Bearing (608VVMC2EPS2L)
20	Push Button
21	Bearing Holder
22	Seal Lock Screw (W/Sp. Washer) M5 · 12
23A	Shift Lever Ass'y
24	O-Ring
25A	Shift Spring
26	Second Pinion
27	Armature
28	Fan Guide
29	Rubber Bushing
30	Stator
31	Housing
32A	Tapping Screw (W/Flange) D5 · 60
33	Name Plate
34	Bearing Seal
35A	Handle (A) ·(B) Set
36A	Tapping Screw (W/Frange) D4 · 16
37	HITACHI Label
38	Carbon Brush
39	Brush Holder
41	Speed Control Switch
42A	Earth Terminal
43	Internal Wire (A)

1

2

Two mechanical diagrams showing a presser pressing a bolt, with no text or symbols present.

	Svenska Dansk Norsk
1	Spak för ändring av rotationsriktning	Omskifterknap Spak
2	Momentomvandlare Skifteplade Skifteplate
3	BORNING ROTATION ROTERING
4	SLAG + BORNING (rotation med slag)	ROTATION + SLAG ROTERING +	SLAG
5	Hastighetsväljare Hastiglædsomskifter Giromkopler med skala
6	Avnötningsgråns Slidgrænse Slitasjegrense
7	No på kolborste Kul No Kullbørstens No
8	Kolborste Kul Kullbørste
9	Kolborsthållare Kulholder Børsteholder
10	Handtaget (A)	Håndtag (A)	Håndtak (A)
11	Handtaget (B)	Håndtag (B)	Håndtak (B)
12	Själgängande skruvar D4 · 16	D4 · 16 Bygningsskruer	D4 · 16 Bygningsskruer

	Suomi		English
1Vipu		Lever
2Vaihtolevy		Change plate
3PORAUS		ROTATION
4PORAUS + ISKU		ROTATION + IMPACT
5Nopeudenvaihtokytkinlevy		Gear shift dial
6Kulutusraja Wear limit
7Hiiliharjojen No.		No. of carbon brush
8Hiiliharja		Carbon brush
9Hiiliharjan pidike		Brush holder
10Kådensijan (A)		Handle (A)
11Kådensijan (B)		Handle (B)
12	D4 · 16 Kierteitysruuvit		D4 · 16 Tapping screws

SÄKERHETSFÖRESKRIFTER FÖR ELVERKTYG

WARNING!

13,0 m/s ^2 (DV14V)

GENERELLE FORSIGTIGHEDSREGLER

ADVARSEL!

VEDLIKEHOLD OG INSPEKSJON

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 recommended 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 accessories. Inspect tool cords periodically and if damaged, 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 servicing, 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.

English

1. Avoid unintentional starting. Do not carry a plugged-in tool with a finger on the switch. Ensure switch is off when plugging in.
2. Use outdoor extension leads. When tool is used outdoors, use only extension cords intended for outdoor use.
3. Stay alert. Watch what you are doing. Use common sense. Do not operate tool when you are tired.

4. 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 function. 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.

5. Warning
   The use of any accessory or attachment, other than those recommended in this handling instructions, may present a risk of personal injury.

6. 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 IMPACT DRILL

1. Before drilling into walls, ceilings or floors, ensure that there are no concealed power cables inside.
2. For DV20V2 and DV14V
   When boring concrete or similar hard materials in IMPACT mode, set the bit rotation switch lever to the R-side. (Fig. 6)
   ○ When tightening or loosening screws, be sure to set the change plate in ROTATION mode. (Fig. 7)

SPECIFICATIONS

Model DV20V2 DV20V3 DV20T DV1		4V
Voltage (by areas)* (110V, 115V, 120V, 127V, 220V, 230V, 240V)
Input 620W* 620W* 620W* 550W*
Reversible Yes No No Yes
Speed change 1 2 1 2 1 2 No		No
No load speed		0 – 1100/min.	0 – 2600/min.	0 – 1100/min.	0 – 2600/min.	1100/min.	2600/min.	0 – 2600/min.
Capacity	Steel	13 mm	8 mm	13 mm	8 mm	13 mm	8 mm	10 mm
	Concrete	20 mm	10 mm	20 mm	10 mm	20 mm	10 mm	14 mm
	Wood	35mm	20 mm	35 mm	20 mm	35 mm	20 mm	24 mm
Full load impact rate		17600/min.	41600/min.	17600/min.	41600/min.	17600/min.	41600/min.	41600/min.
Weight (without cord)		2.3 kg		2.3 kg		2.3 kg		2.0 kg

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

STANDARD ACCESSORIES

(1) Chuck Wrench.... 1
(2) Side Handle Ass'y 1
(3) Depth Stopper 1
Standard accessories are subject to change without notice.

OPTIONAL ACCESSORIES (sold separately)

(1) Case
(2) Drill bit for concrete and stone

O.D.	Length	O.D.	Length	O.D.	Length
6.5 mm	100 mm	10 mm	120 mm	14.3 mm	160 mm
8 mm	100 mm	12 mm	160 mm	16 mm	160 mm
9.5 mm	120 mm	13 mm	160 mm

Drill bit of more than 14.3 mm Outer Diam. cannot be attached to DV14V.

(3) Plus driver bit (Except DV20T)

Bit No. Screw Size Length
No. 2	3 – 5 mm 70 mm
No. 3	6 – 8 mm 70 mm

(4) Minus driver bit (Except DV20T)

a	Screw Size
0.8 mm	4 mm
1 mm	5 – 6 mm

Optional accessories are subject to change without notice.

APPLICATIONS

○By combined actions of ROTATION and IMPACT: Boring holes in hard surfaces (concrete, marble, granite, tiles, etc.)

○By ROTATIONAL action: Boring holes in metal, wood and plastic. Tightening machine screws, wood screws.

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, inviting serious accident.

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. Fitting the drill bit or the driver bit

Fit the drill bit or driver bit into the chuck and use the chuck wrench to secure it, tightening the chuck using each of the three holes in turn.

5. Selecting the appropriate drill bit

○When boring concrete or stone

Use the drill bits specified in the Optional Accessories.

○When boring metal or plastic

Use an ordinary metalworking drill bit.

○When boring wood

Use an ordinary woodworking drill bit. However, when drilling 6.5 mm or smaller holes, use a metalworking drill bit.

6. Selecting the driver bit

Screw heads or bits will be damaged unless a bit appropriate for the screw diameter is employed to drive in the screws.

7. Confirm the direction of bit rotation (Fig. 1)

The bit rotates clockwise (viewed from the rear side) by pushing the R-side of the reversing switch lever. The L-side of the lever is pushed to turn the bit counterclockwise.

CAUTION

Never change the direction of bit rotation while operating. Turn the power switch OFF before changing the direction of bit rotation: otherwise, burning of the motor will result.

Always use the impact screw drill with clockwise rotation, when using it as an impact drill.

8. Fixing the side handle

Loosen the knob bolt on the side handle, and attach the side handle to the gear cover in a position convenient for drilling. Match the projecting part of the handle to the groove on the gear cover, and firmly tighten the knob bolt. To remove the side handle, loosen the knob bolt and rotate the handle.

To attach a depth gauge on the side handle, insert the gauge into the U-shaped groove on the side handle, adjust the position of the depth gauge in accordance with the desired depth of the hole, and firmly tighten the knob bolt.

9. IMPACT to ROTATION changeover (Fig. 2)

The Impact Screw Drill can be switched from IMPACT (impact plus rotation) to ROTATION (rotation only) by sliding the change plate. When boring concrete, stone, tile or similar hard materials, sliding the change plate to IMPACT side. The drill head impacts against the material while continuing to rotate.

When boring metal, wood or plastic or tightening the screw, sliding the change plate to ROTATION side. The drill rotates as an ordinary electric drill. CAUTION

☐Do not use the Impact Screw Drill in the IMPACT function if the material can be bored by rotation only. Such action will not only reduce drill efficiency, but may also damage the drill tip.

○The change plate may not slide smoothly when changing from impact drill mode to drill mode (Fig. 2-③).

In this case, switch ON and operate the machine for few seconds.

The spindle shaft will then be pushed forward, and the change plate can be moved smoothly.

10. High-speed/Low-speed changeover

To change speed, rotate the gear shift dial as indicated by the arrow in Fig. 3. The numeral "1" engraved on the drill body denotes low speed, the numeral "2" denotes high speed.

PRACTICAL HANDLING PROCEDURES

1. Speed adjustment and switch operation

☐The drill speed can be adjusted from 0 through full speed by regulating the trigger-squeezing force. The more the trigger is squeezed, the faster the drill rotates. When the trigger is squeezed fully, the speed is the maximum.

○Pulling the trigger switch and pushing the stopper, it keeps the switched-on condition which is convenient for continuous running. When switching off, the stopper can be disconnected by pulling the trigger again.

2. When using as a Drill or an Impact Drill

(1) Pressing force of the drill

You cannot drill holes more quickly even if you press the drill with a stronger force than necessary. It not only damages tip of drill bits and decreases the efficiency of operation, but also shortens the life of the drill.

(2) In case of penetrating holes

Drill bits can be broken when the material being drilled is penetrated. It is important to decrease pressing force just before penetrating.

CAUTION

In continuous operation, conduct no-load operation for five seconds after completing a drilling job.

(3) When a thick drill bit is used

Your arm is subjected to larger reaction force when a thicker drill bit is used. Be careful not to be moved by the reaction force. For this, establish a foothold, hold the unit tightly with both hands perpendicularly to the material being drilled.

3. When driving machine screws

When the trigger switch is pressed, the motor starts. The drill rotates by attaching the bit to the groove of screw head, and by pushing the head together with the driver main body, it tightens the screw.

CAUTIONS

Exercise care not to excessively prolong driving time, otherwise, the screws may be damaged by excessively force.

○Apply the screwdriver perpendicularly to the screw head when driving a screw; otherwise, the screw head or bit will be damaged, or driving force will not be fully transferred to the screw.

4. When driving wood screws

(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
○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.
○After rotating the screwdriver at low speed for a while until a 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 the excessively small or shallow, requiring much power to drive the screw into it, the thread of the wood screw may sometimes be damaged.

MAINTENANCE AND INSPECTION

1. Inspecting the driver bit

Since continued use of a worn driver bit will damage screw heads, replace the driver bit as soon as excessive wear is noticed.

2. Inspecting the drill bit

Continued use of a worn and/or damaged drill bit will result in reduced drilling efficiency and may seriously overload the drill motor. Inspect the drill bit frequently and replace it as necessary.

3. 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.

4. Inspecting the carbon brushes (Fig. 4)

The motor employs carbon brushes which are consumable parts. Since an excessively worn carbon brush can result in motor trouble, replace the carbon brush with a new one having the same carbon brush No. shown in the figure when it becomes worn to or near the "wear limit". In addition, always keep carbon brushes clean and ensure that they slide freely within the brush holders.

5. Procedure of disassembling and reassembling the handle for replacing a carbon brush, power supply cord, etc. (Fig. 3 and 8)

○Disassembling

(1) Loosen ⑫ three D4 · 16 tapping screws on the handle (A). (Fig. 8)
(2) Turn over the body and loosen ⑫ two D4 · 16 tapping screws on the handle (B). (Fig. 3)

(3) Then remove the handle (B).

○Reassembling

Reassembling can be accomplished by following procedure of disassembling in reverse.

CAUTION

(1) When disassembling, be sure to remove the handle (B). If the handle (A) is removed, the internal wiring in the handle will be damaged.
(2) When reassembling, be sure that the internal wiring is not prinched by the handle or does not come in contact with the rotating parts of the motor.
If the internal wiring is pinched by the handle or comes in contact with the rotating parts of the motor, a serious danger of electric shock to the operator will be created.

6. Replacing a carbon brush (Fig. 5)

○Disassembling

(1) Remove the handle (B) according to aforesaid "5. Procedure of disassembling and reassembling the handle for replacing a carbon brush, power supply cord, etc. (Fig. 3 and 8)."
(2) Lift out the brush holder together with the carbon brush.
(3) Withdraw the brush terminal, and remove the carbon brush from the brush holder.

○Reassembling

(1) Place a new carbon brush into the brush holder, and connect the brush terminal to the carbon brush.
(2) Return the brush holder and other parts to their original positions, as illustrated in Fig. 5.
(3) Ensure that the lead wire and other parts are properly positioned.
(4) Reassemble the handle (B) according to aforesaid "5. Procedure of disassembling and reassembling the handle for replacing a carbon brush, power supply cord, etc. (Fig. 3 and 8)."

7. 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.

NOTE

Due to HITACHI's continuing program of research and development, the specifications herein are subject to change without prior notice.

Information concerning airborne noise and vibration The measured values were determined according to EN50144.

The typical A-weighted sound pressure level: 102 dB (A) (DV20V2·DV20V3·DV20T) 98 dB (A) (DV14V)

The typical A-weighted sound power level: 115 dB (A) (DV20V2·DV20V3·DV20T) 111 dB (A) (DV14V)

Wear ear protection.

The typical weighted root mean square acceleration value: 14,0 m/s ^2 (DV20V2·DV20V3·DV20T) 13,0 m/s ^2 (DV14V)

Line drawing of a quill pen in an inkwell (no text or symbols)

Line drawing of a quill pen in an inkwell (no text or symbols)

Line drawing of a quill pen in an inkwell (no text or symbols)

Svenska		Suomi
EF-DEKLARATION BETRÄFFANDE LIKFORMIGHETVi tillkännagivr med eget ansvar att denna produkt överensstämmer med standard eller standardiserat dokument EN60335, EN55014, EN60555 och EN50082-1 i enlighet med råddirektiven 73/23/E∅S och 89/336/E∅S.* Denna deklaration gäller för CE-märkningen på produkten.		EY-ILMOITUS YHDENMUKAISUUDESTAYksinomaisella vastuudella vakuutamme, ettäätmätuote vastaa normeja tai normitettuja dokumentteja EN60335, EN55014, EN60555 ja EN50082-1 yhteisön ohjeiden 73/23/ETY ja 89/336/ETY mukaisesti.* Tämä ilmoitus sovelletaan tuotekohtaiseen CE-merkintään.
Dansk		English
EF-DEKLARATION OM ENSARTETHEDVi erklærer os fuldstændige ansvarlige for, at dette produkt modsvarer gældende standard eller de standardiserede dokumenter EN60335, EN55014, EN60555 og EN50082-1 i overensstemmelse med EF-direktiver 73/23/E∅F og 89/336/E∅F.* Denne erklæring qælder produkter, der er mærket med CE.		EC DECLARATION OF CONFORMITYWe declare under our sole responsibility that this product is in conformity with standards or standardized documents EN60335, EN55014, EN60555 and EN50082-1 in accordance with Council Directives 73/23/EEC and 89/336/EEC.* This declaration is applicable to the product affixed CE marking.
Norsk
EF's ERKLÆRING OM OVERENSSTEMMELSEVi erklærer herved at vi påtar oss eneansvaret for at dette produktet er i overensstemmelse med normer eller standardiserte dokumenter EN60335, EN55014, EN60555 og EN50082-1 i samsvar med Rådsdirektiver 73/23/E∅S og 89/336/E∅S.* Denne erklæringen gjelder produktets påklistrede CE-merking.
Hitachi Power Tools Europe GmbHSiemensring 34, 47877 Willich, F. R. Germany Hitachi Koki Co., Ltd.Nippon Building, 6-2, Ohtemachi 2-chome, Chiyoda-ku, Tokyo, Japan K. Mitsuishi

Hitachi Koki Co., Ltd.