HITACHI W 6VM, W 6V4, W 6VA4 User Manual

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MODELS

W 6VM W 6V4 W 6VA4

SCREW DRIVER

W 6VM W 6V4 W 6VA4

Hitachi

Power Tools

TECHNICAL DATA

AND

SERVICE MANUAL



LIST Nos. W 6VM: 0798

W 6V4: E701

W 6VA4: E702

Nov. 2004

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

REMARK:

Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s)

is(are) used in the place of company name(s) and model name(s) of our

competitor(s). The symbol(s) utilized here is(are) as follows:

Model W 6VM

Competitor

Symbol Utilized

Company Name

Model Name

Model W 6V4

Symbol Utilized

MAKITA

DeWALT

Company Name

MAKITA

BOSCH

DeWALT

DW255 (DW275K)

Competitor

1404VSR (GSR6-40TE)

6825

Model Name

6824

DW272

Model W 6VA4

Symbol Utilized

Competitor

Company Name

MAKITA

BOSCH

Milwaukee

Model Name

6823

1405VSR (GSR6-25TE)

6740-20

Page

1. PRODUCT NAME ............................................................................................................................ 1

2. MARKETING OBJECTIVE .............................................................................................................. 1

3. APPLICATIONS ............................................................................................................................... 1

4. SELLING POINTS ........................................................................................................................... 1

4-1. Selling Point Descriptions ................................................................................................................ 2

5. SPECIFICATIONS ........................................................................................................................... 6

5-1. Specifications ....................................................................................................................................6

5-2. Optional Accessories ........................................................................................................................7

6. COMPARISONS WITH SIMILAR PRODUCTS ............................................................................... 8

6-1. W 6VM ..............................................................................................................................................8

6-2. W 6V4 ...............................................................................................................................................8

6-3. W 6VA4 .............................................................................................................................................8

7. PRECAUTIONS IN SALES PROMOTION ...................................................................................... 9

7-1. Handling Instructions ........................................................................................................................9

7-2. Caution Plates .................................................................................................................................. 9

7-3. Screw Driving-depth Adjustment.......................................................................................................9

7-4. Self-drilling Screws .........................................................................................................................10

7-5. Drywall Screws ...............................................................................................................................10

7-6. Variable-speed Switch .................................................................................................................... 11

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY ........................................................... 12

8-1. Disassembly ...................................................................................................................................12

8-2. Reassembly ....................................................................................................................................13

8-3. Wiring Diagrams .............................................................................................................................15

8-4. Internal Wire Arrangement and Wiring Work ..................................................................................16

8-5. Insulation Tests ...............................................................................................................................17

8-6. No-load Current Values ................................................................................................................... 18

9. STANDARD REPAIR TIME (UNIT) SCHEDULES ........................................................................ 19

Assembly Diagram for W 6VM

Assembly Diagram for W 6V4

Assembly Diagram for W 6VA4

1. PRODUCT NAME

Hitachi Screw Driver, Models W 6VM, W 6V4 and W 6VA4

2. MARKETING OBJECTIVE

The Models W 6V4 and W 6VA4 screw drivers are upgraded versions of the current Models W 6V3 and W 6VA3,

equipped with strong aluminum gear cover and inner cover and ergonomical housing and handle cover with soft

grip. The Model W 6VM screw driver is newly added to respond to the increasing market demand for a screw

driver operable at 6,000 rpm. Our market share is expected to grow with the release of these new models which

broaden our lineup of screw drivers.

3. APPLICATIONS

Drywall screws: Fastening metal studs and drywall

Interior construction Installation of ceilings, paneling or partitions in offices, shops

supermarkets, apartment houses, schools, factories, etc.

Hex. and Teks screws: Fastening metal to metal, or metal to wood

Exterior construction Installation of siding on buildings

Installation of galvanized iron sheet or corrugated sheet roofing

Plate assembly Assembly and mounting of advertising billboards

Various other interior/exterior construction and plate assembly jobs

4. SELLING POINTS

Ergonomical design for better operation

Soft grip housing and handle cover Big switch trigger Soft protect cover on gear cover and inner cover One motion detachable locator

Robust aluminum gear cover and inner cover

Assembly of metal frames for vinyl greenhouses

Assembly and installation of automobile stamped sections

Class-top short length of grip portion 206 mm (8-1/8") C: 212 mm (8-11/32") B: 210 mm (8-1/4") P: 210 mm (8-1/4") E: 208 mm (8-3/16")

High-power motor: Class-top power input

•••

U.S.A., Canada: 750 W Other countries: 620 W C: U.S.A., Canada: 710 W Other countries: 570 W B: U.S.A., Canada: 550 W Other countries: 500 W P: U.S.A., Canada: 740 W Other countries: 540 W E: U.S.A., Canada: 740 W

Class-top low noise 76 dB (A) C: 79 dB (A) B: 78 dB (A) P: 82 dB (A) E: 80 dB (A) (Rotation direction is R.)

7.5 m (24.6 ft.) long cord (for U.S.A., Canada, Europe, Russia and Oceania)

--- 1 ---

4-1. Selling Point Descriptions

The new Models W 6VM, W 6V4 and W 6VA4 are more comfortable and easier to operate than the current

models and competitors. The outstanding selling points are as follows.

1) Short length of grip portion

The Models W 6VM, W 6V4 and W 6VA4 have a

handle that is shaped in good weight balance

according to the ergonomical design. In addition,

the length of the grip portion is shortest in the

class. The handle grip is very comfortable and it

efficiently reduces operator fatigue. Table 1

shows a comparison of the length of grip portion.

Table 1 Comparison of the length of grip portion

Maker

Model

The length of grip portion mm

HITACHI

W 6VM

206 (8-1/8")

Maker

Model

The length of grip portion mm

W 6V4

206 (8-1/8")

212 (8-11/32")

HITACHI

218 (8-19/32")

(Measuring point of the length of grip portion)

Measuring point of the length of grip portion

210 (8-1/4")

W 6V3

210 (8-1/4")212 (8-11/32")

210 (8-1/4")

Maker

Model

The length of grip portion mm

W 6VA4

206 (8-1/8")

HITACHI

218 (8-19/32")

W 6VA3

210 (8-1/4")212 (8-11/32")

208 (8-3/16")

2) Ergonomical design for better operation

The Models W 6VM, W 6V4 and W 6VA4 are equipped with the following four parts as a result of pursuance of

the ergonomical design.

Soft grip housing and handle cover

The entire body is covered with the uniquely designed elastomer and the grip portion is uneven and matte-

finished to make it resistant to slipping. Thus the grip is very comfortable and it efficiently reduces operator

fatigue.

(Range covered with elastomer)

Crosshatched portion: Covered with elastomer

--- 2 ---

Big switch trigger

A new big switch trigger is adopted for easier switch operation. The switch trigger is rounded for better feel

of triggering.

W 6V4

Soft protect cover on gear cover and inner cover

W 6V3

A transparent protect cover made of elastomer is added to cover the surfaces of the gear cover and the

inner cover made of aluminum. It is easily detachable just by removing the locator. The protect cover has

the following two features.

The material of the protect cover has extremely lower thermal conductivity than aluminum. Therefore,

the protect cover lessens feeling of coldness or hotness even if the gear cover is touched with bare

hands under the severe temperature environment such as in the severely cold areas (Russia, Eastern

Europe and Northern Europe) or the severely hot areas (Middle East and South-East Asia).

The protect cover is soft because it is made of elastomer. In addition, the aluminum gear cover protects

from damages even if the Models W 6VM, W 6V4 and W 6VA4 are hit against wall materials.

(Mounting the protect cover)

Locator

Protect cover

Engage the claws in the air vents of the housing to secure the protect cover.

One motion detachable locator

The locator is used for adjusting the screw head depth. The current Models W 6V3 and W 6VA3 require

the operator to pull the lock sleeve and turn the locator for adjustment. The Models W 6VM, W 6V4 and

W 6VA4 are easier to adjust just by turning the locator.

W 6V4

Pull the lock sleeve in the arrow direction.

W 6V3

Push the lock sleeve in the gear cover.

Turn the locator.

--- 3 ---

3) Low noise

A new fan developed by the 3-D digital analysis technology is adopted. Thanks to the optimized air passage,

the noise level of the Models W 6VM, W 6V4 and W 6VA4 is the lowest in the class. Table 2 shows a

comparison of the no-load noise level.

Table 2 Comparison of the no-load noise level

Maker

Model

No-load noise level* dB (A)

Maker

Model

No-load noise level* dB (A)

Maker

Model

No-load noise level* dB (A)

*: Rotational direction is R.

4) Robust aluminum gear cover and inner cover

The Models W 6VM, W 6V4 and W 6VA4 have the gear cover and the inner cover made of aluminum, while

those of the current Models W 6V3 and W 6VA3 are made of resin. This is to ensure the specified durability

and strength of the Models W 6VM, W 6V4 and W 6VA4 even under the severe environment. Table 3 shows a

comparison of the material of gear cover and inner cover.

Table 3 Comparison of the material of gear cover and inner cover

Maker

Model

Material of gear cover and inner cover

HITACHI

W 6VM

W 6V4

W 6VA4

HITACHI

W 6VM

Aluminum

HITACHI

W 6V3

W 6VA3

Aluminum

Plastic

Maker

Model

Material of gear cover and inner cover

Maker

Model

Material of gear cover and inner cover

5) 7.5 m (24.6 ft.) long cord (for U.S.A., Canada, Europe, Russia and Oceania)

The 7.5 m (24.6 ft.) long cord of the Models W 6VM, W 6V4 and W 6VA4 eliminates the inconvenience of

connecting an extension cord or carrying a cord reel in the work site.

Aluminum

W 6VA4

Aluminum

W 6V4

HITACHI

W 6V3

Plastic

W 6VA3

Plastic

Aluminum

Plastic

Aluminum

--- 4 ---

6) High power motor

The motor of the Models W 6VM, W 6V4 and W 6VA4 is more powerful than the current Models W 6V3 and

W 6VA3 with the class-top power input. Table 4 shows a comparison of the power input.

Table 4 Comparison of the power input

Maker

Model

Power input

Maker

Model

Power input

Maker

Model

Power input

U.S.A., Canada

Other areas

U.S.A., Canada

Other areas

U.S.A., Canada

Other areas

HITACHI

W 6VM

750 (120 V, 6.6 A)

W 6V4

750 (120 V, 6.6 A)

W 6VA4

750 (120 V, 6.6 A)

620

710 (115 V, 6.5 A)

HITACHI

680 (115 V, 6.4 A)

HITACHI

W 6VA3

680 (115 V, 6.4 A)

680 (120 V, 6.0 A)

570

W 6V3

600

540

710 (115 V, 6.5 A)

570

710 (115 V, 6.5 A)

570

550 (120 V, 4.8 A)

500

550 (120 V, 4.8 A)

500

720 (120 V, 6.3 A)

740 (120 V, 6.5 A)

--- 5 ---

5. SPECIFICATIONS

5-1. Specifications

Model

Capacity

Bit mounting size

Power source

Type of motor

Full-load current

Power input

No-load rotation

Enclosure

Drywall screw

Self-drilling screw

U.S.A., Canada

Other areas

U.S.A., Canada

Other areas

W 6VM

6.35 mm (1/4")

Single phase, AC 50 Hz or 60 Hz

Single phase, AC commutator motor

5.9 A (110 V) 2.8 A (230 V)

0 --- 6,000 /min

0 --- 4,500 /min

Housing and handle cover

Gear cover and inner cover Protect cover Locator and hook

••••••••••••••••••••••••••••••••

••••••••••••••••••••••••••

W 6V4 W 6VA4

6 mm (1/4")

6.6 A (120 V)

2.9 A (220 V)

2.7 A (240 V)

750 W

620 W

0 --- 3,000 /min

•••••••••••••

Polyamide resin and thermo

plastic elastomer

•••••••••••

Aluminum alloy

Thermo plastic elastomer Polyamide resin

Switch

Variable switch with reversing switch

Handle

Weight

Packaging*

Net Gross

Type

Cord

Overall length

Standard accessory

U.S.A., Canada, Europe, Russia, Oceania Asia, Africa and other areas

Magnetic bit holder No. 2 Phillips driver bit Sub-stopper

••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

*1: Packaging may vary depending on the market. *2: Standard accessories may vary depending on the market.

Pistol grip handle

•••••••••••••••

•••••••••••

1.4 kg (3.1 lbs.) (without cord)

1.9 kg (4.2 lbs.)

Corrugated cardboard box

Two-core cabtire cable

•••••••••••••

••••••••••••••••••••••••••••••••••

••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

7.5 m (24.6 ft.)

2.5 m (8.2 ft.)

1 1 1

--- 6 ---

5-2. Optional Accessories

(1) For hex-head screws

Sub-stopper (B)Hex-socket

Magnetic type

H = 6.35 mm

H = 7.94 mm H = 7.94 mm

H = 9.53 mm

H = 10 mm H = 10 mm

(2) For other screws

Screw

head

Non magnetic type

H = 6.35 mm

H = 9.53 mm

Bit type Bit holder

No.1 No.2 No.3

No.1 No.2

No.1 No.2 No.3

No.1 No.2

B size

4 mm 5 mm

Magnetic bit holder (Short type)

Magnetic bit holder

Non-magnetic bit holder

H 1/4

H 5/16

H 3/8

Sub-stopper

Sub-stopper (G)

Sub-stopper (F)

(3) Plastic case

Optional accessories are subject to change without notice.

--- 7 ---

6. COMPARISONS WITH SIMILAR PRODUCTS

6-1. W 6VM

Maker

Model

Capacity

Power input

Drywall screw

Self-drilling screw

U.S.A., Canada

Other areas

No-load rotation

No-load noise level *

Overall length

Cord length

Weight *

with long bit holder

with short bit holder

U.S.A., Canada, Europe, Russia and Oceania

Asia, Africa and other areas

/min

dB (A)

HITACHI

W 6VM

6 (1/4")

620

0 --- 6,000

328 (12-7/8")

294 (11-19/32")

7.5 (24.6 ft.)

2.5 (8.2 ft.)

1.4 (3.1 lbs.)

710 (115 V, 6.5 A)

U.S.A.: 2.5 (8.2 ft.) Europe: 4.2 (13.8

*1: Rotation direction is R. *2: Weight excludes cord and means actual weight.

6-2. W 6V4

Maker

Model

Capacity

Power input

Drywall screw

Self-drilling screw

U.S.A., Canada

Other areas

No-load rotation

No-load noise level *

Overall length

Cord length

Weight *

with long bit holder

with short bit holder

U.S.A., Canada, Europe, Russia and Oceania

Asia, Africa and other areas

750 (120 V, 6.6 A)

/min

dB (A)

mm mm

0 --- 4,500

328 (12-7/8")

294 (11-19/32")

7.5 (24.6 ft.)

2.5 (8.2 ft.)

1.4 (3.1 lbs.) 1.3 (2.9 lbs.) 1.4 (3.2 lbs.)

HITACHI

W 6V4

6 (1/4")

680 (115 V, 6.4 A)

620

268 (10-19/32")

*1: Rotation direction is R. *2: Weight excludes cord and means actual weight. *3: U.S.A. only. Europe, Russia and Oceania are 2.5 m.

5 (3/16")

6 (1/4")

570

0 --- 6,000

302 (11-7/8")

4 (5/32")

---

680 (120 V, 6.0 A)750 (120 V, 6.6 A)

540

0 --- 5,300

310 (12-13/64")

U.S.A.: 2.5 (8.2 ft.)

ft.)

Europe: 4.2 (13.8

1.4 (3.2 lbs.) 1.4 (3.2 lbs.)

W 6V3

6 (1/4")

600

0 --- 4,000

302 (11-7/8")

7.5 (24.6 ft.)

2.5 (8.2 ft.)

5 (3/16")

6 (1/4")

710 (115 V, 6.5 A)

570

0 --- 4.500

302 (11-7/8")

U.S.A.: 2.5 (8.2 ft.)

Europe: 4.2 (13.8 ft.)

ft.)

6 (1/4")

---

500

0 --- 4,000

4 (5/32")

---

720 (120 V, 6.3 A)550 (120 V, 4.8 A)

---

0 --- 4,000

310 (12-13/64") 312 (12-9/32")

2.5 (8.2 ft.)

1.5 (3.3 lbs.) 1.4 (3.2 lbs.)

6-3. W 6VA4

Maker

Model

Capacity

Power input

Drywall screw

Self-drilling screw

U.S.A., Canada

Other areas

No-load rotation

No-load noise level *

Overall length

Cord length

Weight *

with long bit holder

with short bit holder

U.S.A., Canada, Europe, Russia and Oceania

Asia, Africa and other areas

/min

dB (A)

W 6VA4

6 (1/4")

750 (120 V, 6.6 A)

620

0 --- 3,000

328 (12-7/8")

294 (11-19/32")

7.5 (24.6 ft.)

2.5 (8.2 ft.)

1.4 (3.1 lbs.) 1.3 (2.9 lbs.) 1.5 (3.3 lbs.)

*1: Rotation direction is R. *2: Weight excludes cord and means actual weight.

HITACHI

W 6VA3

680 (115 V, 6.5 A)

0 --- 2,600

302 (11-7/8")

268 (10-19/32")

2.5 (8.2 ft.)

--- 8 ---

6 (1/4")

600

5 (3/16")

6 (1/4")

710 (115 V, 6.5 A)

570

0 --- 2,500

302 (11-7/8")

U.S.A.: 2.5 (8.2 ft.)

Europe: 4.2 m (13.8

6 (1/4")

---

740 (120 V, 6.5 A)550 (120 V, 4.8 A)

500

0 --- 2,500

320 (12-19/32")

2.5 (8.2 ft.)

ft.)

335 (13-13/64")

3.0 (9.8 ft.)

1.6 (3.5 lbs.) 1.4 (3.2 lbs.)

---

7. PRECAUTIONS IN SALES PROMOTION

In the interest of promoting the safest and most efficient use of the Models W 6VM, W 6V4 and W 6VA4 electric

screwdrivers by all of our customers, it is very important that at the time of sales the salesperson carefully ensures

that the buyer seriously recognizes the importance of the contents of the Handling Instructions, and fully

understands the meaning of the precautions listed on the Caution Plate attached to each tool.

7-1. Handling Instructions

Although every effort is made in each step of design, manufacture and inspection to provide protection against

safety hazards, the dangers inherent in the use of any electric power tool cannot be completely eliminated.

Accordingly, general precautions and suggestions for the use of electric power tools, and specific precautions and

suggestions for the use of the electric screwdriver are listed in the Handling Instructions to enhance the safe and

efficient use of the tool by the customer. Salespersons must be thoroughly familiar with the contents of the

Handling Instructions to be able to offer appropriate guidance to the customer during sales promotion.

7-2. Caution Plates

The following basic safety precautions are listed on the Name Plate attached to the main body of each tool.

However, these precautions are not listed for European countries.

For Asia and Oceania

CAUTION

Read thoroughly HANDLING INSTRUCTIONS before use.

For the U.S.A. and Canada

WARNING

To reduce the risk of injury, user must read and

understand instruction manual

AVERTISSEMENT

Afin de reduire le risque de blessures, l'utilisateur doit

lire et bien comprendre le mode d'emloi.

7-3. Screw Driving-depth Adjustment

Information and suggestions for screw driving-depth selection for applicable screws are described in the Handling

Instructions. The salesperson must be thoroughly familiar with screw driving-depth adjustment procedures to be

able to instruct the customer/user in performing adjustment so that the screw neither protrudes above nor sinks

excessively below the surface of the workpiece into which the screw is driven.

--- 9 ---

Specific adjustment procedures are as follows.

(1) Head of screw protrudes above workpiece surface (Fig. 1).

If dimension A in Fig. 3 is excessively small, the head of the driven screw will protrude above the surface of the

workpiece material as shown in Fig. 1. To adjust dimension A, rotate the locator clockwise as viewed from the

screw mounting end (see Note below). Repeat adjustment as necessary until the head of the driven screw is

properly aligned with the surface of the workpiece.

Material into which screw is driven

Screw

Fig. 1 Fig. 2 Fig. 3

(2) Head of screw sinks below workpiece (Fig. 2).

If dimension A in Fig. 3 is excessively large, the head of the driven screw will sink below the surface of the

workpiece as shown in Fig. 2. To perform adjustment, follow the procedures described in item (1) above, but

rotate the locator counter-clockwise.

Should Hex. and Teks screws be driven when dimension A is excessively large, both the screws and bits may

be easily damaged. Instruct customers/users to perform adjustment correctly without fail.

(NOTE) By turning the locator clockwise or counter-clockwise, dimension A in Fig. 3 can be adjusted

within a maximum dimension of 1.5 mm (0.059"). One complete rotation of the locator is

Material into which screw is driven

Screw

Sub-stopper

Locator

Gear cover

divided into twelve settings, each setting permitting an adjustment of 0.125 mm (0.005").

Accordingly, if dimension B in Fig. 1 is 0.25 mm (0.010"), rotate the locator by two settings.

7-4. Self-drilling Screws

Self-drilling screws are most suitable for joining wooden and metal materials, mounting metallic components onto

iron sheets, or installing roofing materials. Self-drilling and self-tapping, they are commonly employed in the

construction industry because:

Separate drilling and tapping processes are not required when securing wooden materials to metal materials.

Consequently, job costs and processes can be drastically reduced.

7-5. Drywall Screws

Drywall screws are most suitable for interior decorating and construction utilizing such materials as gypsum board

and plastic board. Their main features are:

Like Hex. and Teks screws, drywall screws are self-drilling, and can reduce work time.

Wall panels can be mounted cleanly without cracks or chips.

Drywall screws display far stronger holding power than conventional screws when applied to materials

composed of powder or particles, such as gypsum board.

--- 10 ---

7-6. Variable-speed Switch

This switch is equipped with a variable speed control circuit. Through the control circuit, the speed can be

controlled up to 65 % of maximum speed according to the degree at which the switch is depressed.

A disadvantage of this system is that if the bit becomes locked resulting in stoppage of the motor, the speed

control circuit may be burnt out. In such a case, the switch should be released immediately or turned OFF. To

avoid damage to the switch circuit, the customer should be advised to increase driving speed gradually until the

screw is driven approximately halfway into the workpiece, then depress the trigger to obtain optimum speed.

100 %

65 %

Speed

Trigger stroke

Fig. 4

Switch characteristics (Approximately shown converted into the linear line)

Maximum speed change point

--- 11 ---

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

The numbers in the descriptions below correspond to the item numbers in the Parts List and exploded assembly

diagram. The [BOLD] numbers are for the Model W 6VM, the <Bold> numbers for the Models W 6V4 and

W 6VA4.

8-1. Disassembly

A. Disassembly of the parts within the handle

(1) Removal of the Handle Cover [46] <45>

Loosen the three Tapping Screws (W/Flange) D4 x 20 (Black) [47] <46>, and remove the Handle Cover

[46] <45>.

(2) Removal of the Carbon Brush (Auto Stop Type) (1 Pair) [30] <29>

With a small flat-blade screwdriver, lift up on the spring, and pull the Carbon Brush (Auto Stop Type)

(1 Pair) [30] <29> out from Brush Holder (A) [29] <28> slightly. Next, pull out the terminal portion of

Carbon Brush (Auto Stop Type) (1 Pair) [30] <29> from the Brush Holder (A) [29] <28>. Remove the

carbon brushes from both sides in the same manner.

(3) Removal of the Cord [38] <37>

After loosening the two speed control switch retaining screws, loosen the two Tapping Screws (W/Flange)

D4 x 16 [40] <39> which retain the Cord Clip [39] <38>, and remove the Cord [38] <37> together with the

Cord Armor D8.8 [37] <36>.

B. Removal of the armature and stator

(1) Removal of the Armature [21] <20>

Remove the three Tapping Screws D4 x 25 (Black) [7] <7> from the Gear Cover (A) Ass'y [8] <8>, and

remove the Inner Cover Ass'y [20] <19> with the Armature [21] <20> from the housing. And as illustrated

in Fig. 5, the Inner Cover Ass'y [20] <19> can be removed from the Armature [21] <20> by utilizing a J-130

sleeve (special repair tool, Code No. 970908) and a J-131 plate (special repair tool, Code No. 970909).

(2) Removal of the Stator [24] <23>

First, remove the Fan Guide [22] <21> from the inside of the housing.

Then, loosen the two Hex. Hd. Tapping Screws D4 x 50 [23] <22>, and lightly tap the end surface of the

Housing [36] <35> with a wooden hammer to loosen and remove the Stator [24] <23>.

Fig. 5

--- 12 ---

C. Removal of socket (A) ass'y and gear ass'y

(1) Remove Gear Cover (A) Ass'y [8] <8> and the Inner Cover Ass'y [20] <19>, then Socket (A) Ass'y [11]

<11>, Gear Set [14] <14> and Clutch Disc [12] <12> can be removed. If the Gear Set [14] <14> is hard to

remove, lightly tap the end surface of the Inner Cover Ass'y [20] <19> with a wood hammer. Be careful not

to lose the Spring [13] <13> on the outer circumference of the Gear Set [14] <14> and Washer (A) [16]

<16>. As shown in Fig. 5, insert two flat-blade screwdrivers between the Inner Cover Ass'y [20] <19> and

the Gear Set [14] <14> at each side and remove the Gear Set [14] <14> and Ball Bearing 608VVC2PS2L

[15] <15 > from the Inner Cover Ass'y [20] <19> as a single unit.

Inner Cover Ass'y [20] <19>

Gear Set

[14] <14>

Flat-blade screwdriver

Fig. 6

8-2. Reassembly

Reassembly can be accomplished by following the disassembly procedures in reverse. However, special

attention should be given to the following items.

(1) Fan side Ball Bearing [18] <15> for the Armature [21] <20> in the Inner Cover Ass'y [20] <19> should be

renewed in disassembling the Armature [21] <20>.

(2) Lubrication

Grease: Hitachi Motor Grease (Code No. 930035)

Application:

(a) Fill a moderate amount of grease in Gear Cover (A) Ass'y [8] <8>. (If Gear Cover (A) Ass'y [8] <8> is new,

fill it with 7 g of grease.)

(b) Outer circumference and clutch of Socket (A) Ass'y [11] <11>

Flat-blade screwdriver

(d) Outer circumference of the Gear Set [14] <14>

(e) Clutch and inner circumference of the Clutch Disc [12] <12>

(f) Pinion of the Armature [21] <20>

--- 13 ---

(3) Tightening torque

Handle cover retaining screws

Cord clip retaining screws

Gear cover retaining screws

Stator retaining screws

••••••••••••••••••••••••••••••••••••••••••••••••

Speed control switch retaining screws

Inner cover truss screws

•••••••••••••••••••••••••••••••••••••••••••••••

••••••••••••••••••••••••••••••••••••••

•••••••••••••••••••••••••••••••••••••••••••••

•••••••••••••••••••••••••••••••••••••••••

•••••••••••••••••••••••••••

1.5 --- 2.5 N•m {15 --- 25 kg•cm (13.0 --- 21.7 in-Ibs)}

0.4 --- 0.8 N•m {4 --- 8 kg•cm (3.5 --- 6.9 in-Ibs)}

1.4 --- 2.2 N•m {14 --- 22 kg•cm (12.0 --- 18.9 in-Ibs)}

--- 14 ---

8-3. Wiring Diagrams

(1) Products with noise suppressor

Fig. 7

(2) Products without noise suppressor

Fig. 8

--- 15 ---

8-4. Internal Wire Arrangement and Wiring Work

A. Internal wire arrangement

(1) Products with noise suppressor

(2) Products without noise suppressor

Fig. 9 Schematic diagram

--- 16 ---

B. Additional wiring work

General internal wiring can be accomplished by referring to paragraph 8-3 and 8-4-A. The following are special

instructions for switch connection.

(1) Wiring of reversing switch

Insert the lead wire (brown) coming from the

brush holder into the terminal (1) of the reversing

switch, and the lead wire (blue) into the terminal

(2) as shown in Fig. 10. Insert the lead wire

(gray) coming from the stator into the terminal (3)

and the lead wire (red) into the terminal (4). After

insertion, pull each lead wire slightly to check that

the lead wires do not come off. To disconnect the

lead wires, insert a small flat-blade screwdriver

into the slots near the terminals and pull out the

lead wires.

Fig. 10 Wiring of reversing switch

(2) Wiring of variable speed control switch

Insert each cord into the terminal 1 and

terminal 2 of the speed control switch as

shown in Fig. 11, and tighten the screw

[tightening torque: 0.6

5.2

1.7 in-lbs.)]. Insert the lead wire (yellow)

0.2 N•m (6

2 kgf•cm,

coming from the stator into the terminal M1 and

the lead wire (white) into the terminal M2. Insert

each lead wire (white) coming from the noise

suppressor into the terminal C1 and C2. After

insertion, pull each lead wire slightly to check

the lead wires do not come off. To disconnect

the lead wires, insert a small flat-blade

screwdriver into the slots near the terminals and

pull out the lead wires.

Fig. 11 Wiring of speed control switch

8-5. Insulation Tests

On completion of reassembly after repair, measure the insulation resistance and conduct the dielectric strength

test.

Insulation resistance: 7 M Ω or more with DC 500 V Megohm Tester

Dielectric strength: AC 4,000 V/1 minute, with no abnormalities

AC 2,500 V/1 minute, with no abnormalities

••••••••

220 V --- 240 V (

••••••••

110 V --- 127 V (except for U.K. products)

and 110 V for U.K. products

--- 17 ---

)

8-6. No-load Current Values

After no-load operation for 30 minutes, the no-load current value should be as follows.

Voltage (V) 110

Current (A) max.

2.5

115 120 220 230 240

2.5 2.5 1.2 1.2 1.1

--- 18 ---

9. STANDARD REPAIR TIME (UNIT) SCHEDULES

MODEL 10 20 30 40 50 60 min.

Fixed

Variable

Work Flow

W 6V4

W 6VA4

W 6VM

Switch

Cord Cord Armor

Housing

Stator

General Assembly

Armature

Ball Bearing

(608VV)

Washer (A)

Inner Cover

Ass'y

Ball Bearing

(608VV)

Ball Bearing

(6900VV)

[W 6VM]

Fringer (A)

O-Ring (F) Protect Cover

Clutch Disc

Spring

Gear

Gear Cover

Socket (A)

Set Ring

(A)

Steel Ball x 2

(A) Ass'y

Ass'y

--- 19 ---

Hitachi Power Tools

ELECTRIC TOOL PARTS LIST

LIST NO. 0798

SCREW DRIVER Model W 6VM

2004 • 8 •25

(E1)

501

502

503

504

505

4342

PARTS

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

1 876-031 O-RING (S-16) 1

2 323-487 LOCATOR ASS’Y 1 INCLUD.3

3 323-488 CLICK SPRING 1

4 971-468 FRINGER (A) 1

5 317-662 O-RING (F) 1

6 323-558 PROTECT COVER (A) 1

7 321-057 TAPPING SCREW D4X25 (BLACK) 3

8 323-486 GEAR COVER (A) ASS’Y 1 INCLUD. 5

9 872-573 SET RING 1

10 959-148 STEEL BALL D3.175 (10 PCS.) 2

*11 323-491 SOCKET (A) ASS’Y 1 INCLUD. 9, 10

*11 323-482 SOCKET (A) ASS’Y 1

12 323-476 CLUTCH DISC 1

13 306-024 SPRING 1

14 323-504 GEAR SET 1

15 608-VVM BALL BEARING 608VVC2PS2L 1

16 933-545 WASHER (A) 2

17 323-556

SLOTTED HD. SCREW (SEAL LOCK) M4X8

18 690-0VV BALL BEARING 6900VV2MPS2L 1

19 323-557 FELT (A) 1

20 323-503 INNER COVER ASS’Y (B) 1 INCLUD. 15-19

*21 360-676 ARMATURE (C) 110V 1

*21 360-677U ARMATURE ASS’Y (C) 120V 1 INCLUD. 18, 25

*21 360-677E ARMATURE (C) 220V-230V 1

*21 360-677F ARMATURE (C) 240V 1

22 323-472 FAN GUIDE 1

23 961-672 HEX. HD. TAPPING SCREW D4X50 2

*24 340-599C STATOR 110V-120V 1

*24 340-599E STATOR 220V-240V 1

25 608-VVM BALL BEARING 608VVC2PS2L 1

26 NAME PLATE 1

27 323-471 HOOK 1

28 HITACHI LABEL 2

29 323-512 BRUSH HOLDER (A) 2

30 999-091

CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 2

*31 323-489 INTERNAL WIRE (BROWN) 1 FOR USA, CAN, KUW, HKG, THA

*32 323-480

CHOKE COIL (W/INTERNAL WIRE) BROWN

33 323-479 SWITCH (1P PILLAR TYPE) W/LOCK 1

*34 323-490 INTERNAL WIRE (BLUE) 1 FOR USA, CAN, KUW, HKG, THA

*35 323-481 CHOKE COIL (W/INTERNAL WIRE) BLUE 1

36 323-483 HOUSING 1

37 953-327 CORD ARMOR D8.8 1

*38 323-559 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8)

*38 500-423Z CORD 1 (CORD ARMOR D8.8) FOR KUW

*38 323-560 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR GBR (230V)

*38 323-562 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR GBR (110V)

*38 500-435Z CORD 1 (CORD ARMOR D8.8) FOR HKG

*38 320-130 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR USA, CAN

*38 323-561 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR AUS

*38 500-468Z CORD 1 (CORD ARMOR D8.8) FOR THA

*38 500-470Z CORD 1 (CORD ARMOR D8.8) FOR TPE

ALTERNATIVE PARTS--- 2 ---

NO.

USED

INCLUD. 9, 10 FOR HKG, THA, TPE, KOR

EXCEPT FOR USA, CAN, KUW, HKG, THA

W 6VM

8 -- 04

PARTS

ITEM

NO.

CODE NO.

DESCRIPTION

*38 500-409Z CORD 1 (CORD ARMOR D8.8) FOR KOR

39 937-631 CORD CLIP 1

40 984-750 TAPPING SCREW (W/FLANGE) D4X16 2

*41 959-140 CONNECTOR 50091 (10 PCS.) 2

*42 930-039 NOISE SUPPRESSOR 1

*43 994-273 NOISE SUPPRESSOR 1

*44 317-667 INTERNAL WIRE 2

*45 992-635 EARTH TERMINAL 1

46 323-484 HANDLE COVER 1

47 301-653

TAPPING SCREW (W/FLANGE) D4X20 (BLACK) 3

NO.

USED

REMARKS

EXCEPT FOR USA, CAN, KUW, HKG, THA

W 6VM

8 -- 04

ALTERNATIVE PARTS --- 3 ---

STANDARD ACCESSORIES

ITEM

NO.

CODE NO.

DESCRIPTION

* 501 323-352 SUB STOPPER (G) 1

502 971-511Z + DRIVER BIT (A) NO.2 25L 1

* 503 317-674 MAGNETIC BIT HOLDER ASS’Y (41L) 1 INCLUD. 502

* 503 323-353 MAGNETIC BIT HOLDER ASS’Y (81.1L) 1 INCLUD. 502 FOR HKG

* 503 982-554Z MAGNETIC BIT HOLDER (75L) 1 FOR HOL, AUS

* 503 323-354 MAGNETIC BIT HOLDER ASS’Y (47.1L) 1 INCLUD. 502 FOR THA,KOR

* 504 323-351 SUB STOPPER (F) 1 FOR USA, CAN, AUS, HOL, HKG

* 505 310-904 CASE 1 FOR ESP

NO.

USED

REMARKS

EXCEPT FOR USA, CAN, AUS, HOL, HKG

OPTIONAL ACCESSORIES

ITEM

CODE NO.

NO. 601 317-670

602 317-671

DESCRIPTION

SUB STOPPER (B) FOR H3/8, H10 HEX. SOCKET

SUB STOPPER (B) FOR H5/16 HEX. SOCKET

603 317-827 SUB STOPPER (B) H1/4 HEX. SOCKET 1

* 604 985-330 MAGNETIC HEX. SOCKET 3/8”X65L 1 EXCEPT FOR THA, HKG, TPE, KOR

* 605 985-321 MAGNETIC HEX. SOCKET 10MMX65L 1 EXCEPT FOR THA, HKG, TPE, KOR

* 606 985-322 MAGNETIC HEX. SOCKET 5/16”X65L 1 EXCEPT FOR THA, HKG, TPE, KOR

* 607 985-332 MAGNETIC HEX. SOCKET 1/4”X65L 1 EXCEPT FOR THA, HKG, TPE, KOR

* 608 985-326 NON-MAGNETIC HEX. SOCKET 3/8” 65L 1 EXCEPT FOR THA, HKG, TPE, KOR

* 609 985-329 NON-MAGNETIC HEX. SOCKET 10MM 65L 1 EXCEPT FOR THA, HKG, TPE, KOR

* 610 985-327 NON-MAGNETIC HEX. SOCKET 5/16” 65L 1 EXCEPT FOR THA, HKG, TPE, KOR

*611 985-328 NON-MAGNETIC HEX. SOCKET 1/4” 65L 1 EXCEPT FOR THA, HKG, TPE, KOR

* 612 982-563Z NON-MAGNETIC BIT HOLDER 1 EXCEPT FOR THA, HKG, TPE, KOR

* 613 323-356 MAGNETIC HEX. SOCKET 5/16”X71.1L 1 EXCEPT FOR THA, HKG, TPE, KOR

* 614 323-355 MAGNETIC HEX. SOCKET 10MMX71.1L 1 EXCEPT FOR THA, HKG, TPE, KOR

615 985-333 + DRIVER BIT NO. 1 25L 1

616 971-512Z + DRIVER BIT (A) NO. 3 25L 1

617 985-334 + DRIVER BIT NO. 1 25L W/STEPPED ROD 1

618 985-335 + DRIVER BIT NO. 2 25L W/STEPPED ROD 1

619 985-336 - DRIVER BIT 4MMX25 1

620 985-337 - DRIVER BIT 5MMX25 1

621 985-338 - DRIVER BIT 6MMX25 1

622 985-339 - DRIVER BIT 8MMX25 1

623 985-340 - DRIVER BIT 4MMX25 (W/STEPPED ROD) 1

624 985-341 - DRIVER BIT 5MMX25 (W/STEPPED ROD) 1

625 985-342 HEX. BIT 4MMX25L 1

626 985-343 HEX. BIT 5MMX25L 1

627 985-344 HEX. BIT 6MMX25L 1

628 310-904 CASE 1

NO.

USED

REMARKS

W 6VM

--- 4 --- 8 -- 04

ALTERNATIVE PARTS

Printed in Japan

(040825N)

Hitachi Power Tools

ELECTRIC TOOL PARTS LIST

LIST NO. E701

SCREW DRIVER Model W 6V4

2004 • 8 •30

(E1)

501

502

503

504

505

4241

PARTS

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

1 876-031 O-RING (S-16) 1

2 323-487 LOCATOR ASS’Y 1 INCLUD. 3

3 323-488 CLICK SPRING 1

4 971-468 FRINGER (A) 1

5 317-662 O-RING (F) 1

6 323-558 PROTECT COVER (A) 1

7 321-057 TAPPING SCREW D4X25 (BLACK) 3

8 323-486 GEAR COVER (A) ASS’Y 1 INCLUD. 5

9 872-573 SET RING 1

10 959-148 STEEL BALL D3.175 (10 PCS.) 2

*11 323-491 SOCKET (A) ASS’Y 1 INCLUD. 9, 10

*11 323-482 SOCKET (A) ASS’Y 1

12 323-476 CLUTCH DISC 1

13 306-024 SPRING 1

14 323-485 GEAR SET 1

15 608-VVM BALL BEARING 608VVC2PS2L 2

16 933-545 WASHER (A) 1

17 323-556

SLOTTED HD. SCREW (SEAL LOCK) M4X8

18 323-557 FELT (A) 1

19 323-473 INNER COVER ASS’Y (A) 1 INCLUD. 15-18

*20 360-672 ARMATURE (A) 110V 1

*20 360-673U ARMATURE ASS’Y (A) 120V 1 INCLUD. 15, 24

*20 360-673E ARMATURE (A) 220V-230V 1

*20 360-673F ARMATURE (A) 240V 1

21 323-472 FAN GUIDE 1

22 961-672 HEX. HD. TAPPING SCREW D4X50 2

*23 340-599C STATOR 110V-120V 1

*23 340-599E STATOR 220V-240V 1

24 608-VVM BALL BEARING 608VVC2PS2L 1

25 NAME PLATE 1

26 323-471 HOOK 1

27 HITACHI LABEL 2

28 323-512 BRUSH HOLDER (A) 2

29 999-091

CARBON BRUSH (AUTO STOP TYPE) (1 PAIR)

*30 323-489 INTERNAL WIRE (BROWN) 1 FOR THA, HKG, KUW, USA, CAN

*31 323-480

CHOKE COIL (W/INTERNAL WIRE) BROWN

32 323-479 SWITCH (1P PILLAR TYPE) W/LOCK 1

*33 323-490 INTERNAL WIRE (BLUE) 1 FOR THA, HKG, KUW, USA, CAN

*34 323-481 CHOKE COIL (W/INTERNAL WIRE) BLUE 1

35 323-483 HOUSING 1

36 953-327 CORD ARMOR D8.8 1

*37 323-559 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8)

*37 500-468Z CORD 1 (CORD ARMOR D8.8) FOR THA

*37 500-423Z CORD 1 (CORD ARMOR D8.8) FOR KUW

*37 320-130 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR USA, CAN

*37 500-435Z CORD 1 (CORD ARMOR D8.8) FOR HKG

*37 500-409Z CORD 1 (CORD ARMOR D8.8) FOR KOR

*37 500-470Z CORD 1 (CORD ARMOR D8.8) FOR TPE

*37 323-561 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR AUS

*37 323-562 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR GBR (110V)

*37 323-560 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR GBR (230V)

ALTERNATIVE PARTS--- 2 ---

NO.

USED

INCLUD. 9, 10 FOR TPE, THA, HKG, KOR

EXCEPT FOR THA, HKG, KUW, USA, CAN

W 6V4

8 -- 04

PARTS

ITEM

NO.

CODE NO.

DESCRIPTION

38 937-631 CORD CLIP 1

39 984-750 TAPPING SCREW (W/FLANGE) D4X16 2

*40 959-140 CONNECTOR 50091 (10 PCS.) 2

*41 930-039 NOISE SUPPRESSOR 1

*42 994-273 NOISE SUPPRESSOR 1

*43 317-667 INTERNAL WIRE 2

*44 992-635 EARTH TERMINAL 1

45 323-484 HANDLE COVER 1

46 301-653

TAPPING SCREW (W/FLANGE) D4X20 (BLACK) 3

NO.

USED

W 6V4

REMARKS

EXCEPT FOR THA, HKG, KUW, USA, CAN

8 -- 04

ALTERNATIVE PARTS --- 3 ---

STANDARD ACCESSORIES

ITEM

NO.

CODE NO.

DESCRIPTION

* 501 323-352 SUB STOPPER (G) 1

502 971-511Z + DRIVER BIT (A) NO. 2 25L 1

* 503 317-674 MAGNETIC BIT HOLDER ASS’Y (41L) 1 INCLUD. 502

* 503 323-354 MAGNETIC BIT HOLDER ASS’Y (47.1L) 1 INCLUD. 502 FOR TPE, THA, KOR

* 503 982-554Z MAGNETIC BIT HOLDER (75L) 1 FOR AUS, HOL, USA, CAN

* 503 323-353 MAGNETIC BIT HOLDER ASS’Y (81.1L) 1 INCLUD. 502 FOR HKG

* 504 323-351 SUB STOPPER (F) 1 FOR HKG, AUS, HOL, USA, CAN

* 505 310-904 CASE 1 FOR ESP

NO.

USED

REMARKS

EXCEPT FOR HKG, AUS, HOL, USA, CAN

OPTIONAL ACCESSORIES

ITEM

CODE NO.

NO. 601 317-670

602 317-671

DESCRIPTION

SUB STOPPER (B) FOR H3/8, H10 HEX. SOCKET

SUB STOPPER (B) FOR H5/16 HEX. SOCKET

603 317-827 SUB STOPPER (B) H1/4 HEX. SOCKET 1

* 604 985-330 MAGNETIC HEX. SOCKET 3/8”X65L 1 EXCEPT FOR TPE, THA, HKG, KOR

* 605 985-321 MAGNETIC HEX. SOCKET 10MMX65L 1 EXCEPT FOR TPE, THA, HKG, KOR

* 606 985-322 MAGNETIC HEX. SOCKET 5/16”X65L 1 EXCEPT FOR TPE, THA, HKG, KOR

* 607 985-332 MAGNETIC HEX. SOCKET 1/4”X65L 1 EXCEPT FOR TPE, THA, HKG, KOR

* 608 985-326 NON-MAGNETIC HEX. SOCKET 3/8” 65L 1 EXCEPT FOR TPE, THA, HKG, KOR

* 609 985-329 NON-MAGNETIC HEX. SOCKET 10MM 65L 1 EXCEPT FOR TPE, THA, HKG, KOR

* 610 985-327 NON-MAGNETIC HEX. SOCKET 5/16” 65L 1 EXCEPT FOR TPE, THA, HKG, KOR

*611 985-328 NON-MAGNETIC HEX. SOCKET 1/4” 65L 1 EXCEPT FOR TPE, THA, HKG, KOR

* 612 982-563Z NON-MAGNETIC BIT HOLDER 1 EXCEPT FOR TPE, THA, HKG, KOR

* 613 323-355 MAGNETIC HEX. SOCKET 10MMX71.1L 1 FOR TPE, THA, HKG, KOR

* 614 323-356 MAGNETIC HEX. SOCKET 5/16”X71.1L 1 FOR TPE, THA, HKG, KOR

615 985-333 + DRIVER BIT NO. 1 25L 1

616 971-512Z + DRIVER BIT (A) NO. 3 25L 1

617 985-334 + DRIVER BIT NO. 1 25L W/STEPPED ROD 1

618 985-335 + DRIVER BIT NO. 2 25L W/STEPPED ROD 1

619 985-336 - DRIVER BIT 4MMX25 1

620 985-337 - DRIVER BIT 5MMX25 1

621 985-338 - DRIVER BIT 6MMX25 1

622 985-339 - DRIVER BIT 8MMX25 1

623 985-340 - DRIVER BIT 4MMX25 (W/STEPPED ROD) 1

624 985-341 - DRIVER BIT 5MMX25 (W/STEPPED ROD) 1

625 985-342 HEX. BIT 4MMX25L 1

626 985-343 HEX. BIT 5MMX25L 1

627 985-344 HEX. BIT 6MMX25L 1

628 310-904 CASE 1

NO.

USED

REMARKS

W 6V4

--- 4 --- 8 -- 04

ALTERNATIVE PARTS

Printed in Japan

(040830N)

Hitachi Power Tools

ELECTRIC TOOL PARTS LIST

LIST NO. E702

SCREW DRIVER Model W 6VA4

2004 • 8 •30

(E1)

501

502

503

504

505

506

507

4241

PARTS

ITEM

NO.

CODE NO.

DESCRIPTION REMARKS

1 876-031 O-RING (S-16) 1

2 323-487 LOCATOR ASS’Y 1 INCLUD. 3

3 323-488 CLICK SPRING 1

4 971-468 FRINGER (A) 1

5 317-662 O-RING (F) 1

6 323-558 PROTECT COVER (A) 1

7 321-057 TAPPING SCREW D4X25 (BLACK) 3

8 323-486 GEAR COVER (A) ASS’Y 1 INCLUD. 5

9 872-573 SET RING 1

10 959-148 STEEL BALL D3.175 (10 PCS.) 2

*11 323-491 SOCKET (A) ASS’Y 1 INCLUD. 9, 10

*11 323-482 SOCKET (A) ASS’Y 1 INCLUD. 9, 10 FOR TPE, SIN, HKG

12 323-476 CLUTCH DISC 1

13 306-024 SPRING 1

14 323-474 GEAR SET 1

15 608-VVM BALL BEARING 608VVC2PS2L 2

16 933-545 WASHER (A) 1

17 323-556

SLOTTED HD. SCREW (SEAL LOCK) M4X8

18 323-557 FELT (A) 1

19 323-473 INNER COVER ASS’Y (A) 1 INCLUD. 15-18

*20 360-670 ARMATURE (B) 100V-110V 1

*20 360-671U ARMATURE ASS’Y (B) 120V 1 INCLUD. 15, 24

*20 360-671E ARMATURE (B) 220V-230V 1

*20 360-671F ARMATURE (B) 240V 1

21 323-472 FAN GUIDE 1

22 961-672 HEX. HD. TAPPING SCREW D4X50 2

*23 340-599C STATOR 110V-120V 1

*23 340-599E STATOR 220V-240V 1

24 608-VVM BALL BEARING 608VVC2PS2L 1

25 NAME PLATE 1

26 323-471 HOOK 1

27 HITACHI LABEL 2

28 323-512 BRUSH HOLDER (A) 2

29 999-091

CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 2

*30 323-489 INTERNAL WIRE (BROWN) 1 FOR SAU, SIN, HKG, USA, CAN, IND

*31 323-480

CHOKE COIL (W/INTERNAL WIRE) BROWN

32 323-479 SWITCH (1P PILLAR TYPE) W/LOCK 1

*33 323-490 INTERNAL WIRE (BLUE) 1 FOR SAU, SIN, HKG, USA, CAN, IND

*34 323-481 CHOKE COIL (W/INTERNAL WIRE) BLUE 1 EXCEPT FOR SAU, SIN, HKG, USA, CAN, IND

35 323-483 HOUSING 1

36 953-327 CORD ARMOR D8.8 1

*37 323-559 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8)

*37 500-409Z CORD 1 (CORD ARMOR D8.8) FOR SAU, IND

*37 500-423Z CORD 1 (CORD ARMOR D8.8) FOR SIN

*37 323-561 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR NZL, AUS

*37 500-247Z CORD 1 (CORD ARMOR D8.8) FOR SAF, YEN

*37 320-130 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR USA, CAN

*37 500-435Z CORD 1 (CORD ARMOR D8.8) FOR HKG

*37 500-470Z CORD 1 (CORD ARMOR D8.8) FOR TPE

*37 323-562 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR GBR (110V)

*37 323-560 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR GBR (230V)

ALTERNATIVE PARTS--- 2 ---

NO.

USED

1 EXCEPT FOR SAU, SIN, HKG, USA, CAN, IND

W 6VA4

8 -- 04

PARTS

ITEM

NO.

CODE NO.

DESCRIPTION

*37 323-563 CORD (LENGTH 7.5M) 1 (CORD ARMOR D8.8) FOR SUI

38 937-631 CORD CLIP 1

39 984-750 TAPPING SCREW (W/FLANGE) D4X16 2

*40 959-140 CONNECTOR 50091 (10 PCS.) 2

*41 930-039 NOISE SUPPRESSOR 1 EXCEPT FOR SAU, SIN, HKG, USA, CAN, IND

*42 994-273 NOISE SUPPRESSOR 1 EXCEPT FOR SAU, SIN, HKG, USA, CAN, IND

*43 317-667 INTERNAL WIRE 2 EXCEPT FOR SAU, SIN, HKG, USA, CAN, IND

*44 992-635 EARTH TERMINAL 1 EXCEPT FOR SAU, SIN, HKG, USA, CAN, IND

45 323-484 HANDLE COVER 1

46 301-653

TAPPING SCREW (W/FLANGE) D4X20 (BLACK) 3

NO.

USED

EXCEPT FOR SAU, SIN, HKG, USA, CAN, IND

REMARKS

W 6VA4

8 -- 04

ALTERNATIVE PARTS --- 3 ---

STANDARD ACCESSORIES

ITEM

NO.

CODE NO.

DESCRIPTION

* 501 323-352 SUB STOPPER (G) 1

* 502 971-511Z + DRIVER BIT (A) NO. 2 25L 1 EXCEPT FOR TPE

* 503 317-674 MAGNETIC BIT HOLDER ASS’Y (41L) 1

* 503 982-554Z MAGNETIC BIT HOLDER (75L) 1 FOR NZL, AUS, USA, CAN

* 503 323-354 MAGNETIC BIT HOLDER ASS’Y (47.1L) 1 INCLUD. 502 FOR SIN

* 503 323-353 MAGNETIC BIT HOLDER ASS’Y (81.1L) 1 INCLUD. 502 FOR HKG

* 504 323-356 MAGNETIC HEX. SOCKET 5/16”X71.1L 1 FOR TPE

* 505 317-671

SUB STOPPER (B) FOR H5/16 HEX. SOCKET

* 506 323-351 SUB STOPPER (F) 1 FOR HKG, NZL, AUS, USA, CAN

* 507 310-904 CASE 1 FOR ESP

NO.

USED

EXCEPT FOR HKG, NZL, AUS, USA, CAN, TPE

REMARKS

INCLUD. 502 EXCEPT FOR TPE, SIN, HKG,

NZL, AUS, USA, CAN

1 FOR TPE

OPTIONAL ACCESSORIES

ITEM

CODE NO.

NO. 601 317-670

602 317-671

DESCRIPTION

SUB STOPPER (B) FOR H3/8, H10 HEX. SOCKET

SUB STOPPER (B) FOR H5/16 HEX. SOCKET

603 317-827 SUB STOPPER (B) H1/4 HEX. SOCKET 1

* 604 985-330 MAGNETIC HEX. SOCKET 3/8”X65L 1 EXCEPT FOR TPE, SIN, HKG

* 605 985-321 MAGNETIC HEX. SOCKET 10MMX65L 1 EXCEPT FOR TPE, SIN, HKG

* 606 985-322 MAGNETIC HEX. SOCKET 5/16”X65L 1 EXCEPT FOR TPE, SIN, HKG

* 607 985-332 MAGNETIC HEX. SOCKET 1/4”X65L 1 EXCEPT FOR TPE, SIN, HKG

* 608 985-326 NON-MAGNETIC HEX. SOCKET 3/8” 65L 1 EXCEPT FOR TPE, SIN, HKG

* 609 985-329 NON-MAGNETIC HEX. SOCKET 10MM 65L 1 EXCEPT FOR TPE, SIN, HKG

* 610 985-327 NON-MAGNETIC HEX. SOCKET 5/16” 65L 1 EXCEPT FOR TPE, SIN, HKG

*611 985-328 NON-MAGNETIC HEX. SOCKET 1/4” 65L 1 EXCEPT FOR TPE, SIN, HKG

* 612 982-563Z NON-MAGNETIC BIT HOLDER 1 EXCEPT FOR TPE, SIN, HKG

* 613 323-355 MAGNETIC HEX. SOCKET 10MMX71.1L 1 FOR TPE, SIN, HKG

* 614 323-356 MAGNETIC HEX. SOCKET 5/16”X71.1L 1 FOR SIN, HKG

615 985-333 + DRIVER BIT NO. 1 25L 1

616 971-512Z + DRIVER BIT (A) NO. 3 25L 1

617 985-334 + DRIVER BIT NO. 1 25L W/STEPPED ROD 1

618 985-335 + DRIVER BIT NO. 2 25L W/STEPPED ROD 1

619 985-336 - DRIVER BIT 4MMX25 1

620 985-337 - DRIVER BIT 5MMX25 1

621 985-338 - DRIVER BIT 6MMX25 1

622 985-339 - DRIVER BIT 8MMX25 1

623 985-340 - DRIVER BIT 4MMX25 (W/STEPPED ROD) 1

624 985-341 - DRIVER BIT 5MMX25 (W/STEPPED ROD) 1

625 985-342 HEX. BIT 4MMX25L 1

626 985-343 HEX. BIT 5MMX25L 1

627 985-344 HEX. BIT 6MMX25L 1

628 310-904 CASE 1

NO.

USED

REMARKS

W 6VA4

--- 4 --- 8 -- 04

ALTERNATIVE PARTS

Printed in Japan

(040830N)

HITACHI W 6VM, W 6V4, W 6VA4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

1. PRODUCT NAME

2. MARKETING OBJECTIVE

3. APPLICATIONS

4. SELLING POINTS

4-1. Selling Point Descriptions

5. SPECIFICATIONS

5-1. Specifications

5-2. Optional Accessories

6. COMPARISONS WITH SIMILAR PRODUCTS

6-1. W 6VM

6-2. W 6V4

6-3. W 6VA4

7. PRECAUTIONS IN SALES PROMOTION

7-1. Handling Instructions

7-2. Caution Plates

7-3. Screw Driving-depth Adjustment

7-4. Self-drilling Screws

7-5. Drywall Screws

7-6. Variable-speed Switch

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

8-1. Disassembly

8-2. Reassembly

8-3. Wiring Diagrams

8-4. Internal Wire Arrangement and Wiring Work

8-5. Insulation Tests

8-6. No-load Current Values

9. STANDARD REPAIR TIME (UNIT) SCHEDULES