Hitachi WH 14DSL Manual

CORDLESS IMPACT DRIVER

WH 14DSL

CORDLESS IMPACT WRENCH

WR 14DSL

WH 14DSL

WR 14DSL

Feb. 2008

LIST Nos. WH 14DSL: G894

WR 14DSL: G895

MODELS

WH 14DSL

WR 14DSL

REMARK:

Throughout this TECHNICAL DATAAND 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:

WH 14DSL

Competitors

Symbols Utilized Company Name Model Name

P MAKITA BTD130F

WR 14DSL

Competitors

Symbols Utilized Company Name Model Name

None

CONTENTS

Page

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

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

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

4. STANDARD EQUIPMENT ----------------------------------------------------------------------------------------------- 1

5. SELLING POINTS --------------------------------------------------------------------------------------------------------- 2

5-1. Selling Point Descriptions ---------------------------------------------------------------------------------------- 4

6. SPECIFICATIONS --------------------------------------------------------------------------------------------------------- 8

6-1. Specifications ---------------------------------------------------------------------------------------------------- 8

6-2. Optional Accessories ------------------------------------------------------------------------------------------- 9

7. COMPARISONS WITH SIMILAR PRODUCTS ---------------------------------------------------------------------12

7-1. Specification Comparisons (Cordless impact driver) ---------------------------------------------------12

7-2. Specification Comparisons (Cordless impact wrench) -------------------------------------------------13

7-3. Tightening Torque------------------------------------------------------------------------------------------------14

7-4. Tightening Time --------------------------------------------------------------------------------------------------18

7-5. Number of Screws or Bolts Driven --------------------------------------------------------------------------19

8. PRECAUTIONS IN SALES PROMOTION --------------------------------------------------------------------------20

8-1. Safety Instructions -------------------------------------------------------------------------------------------------20

8-2. Tightening Torque Inspection Prior to Operation ----------------------------------------------------------23

8-3. Tightening Torque Variation--------------------------------------------------------------------------------------23

8-4. Suggestions and Precautions for the Efficient Use of the Charger ----------------------------------24

9. OTHER PRECAUTIONS--------------------------------------------------------------------------------------------------25

10. REPAIR GUIDE------------------------------------------------------------------------------------------------------------26

10-1. Precautions in Disassembly and Reassembly------------------------------------------------------------26

10-2. Precautions in Disassembly and Reassembly of Battery Charger-----------------------------------41

11. STANDARD REPAIR TIME (UNIT) SCHEDULES ---------------------------------------------------------------42

Assembly Diagram for WH 14DSL

Assembly Diagram for WR 14DSL

-1-

1. PRODUCT NAME

Hitachi Cordless Impact Driver, Model WH 14DSL

Hitachi Cordless Impact Wrench, Model WR 14DSL

2. MARKETING OBJECTIVE

The new Models WH 14DSL and WR 14DSL are the compact-type cordless impact driver/wrench

developed to reinforce our 14.4-V product lines and also to meet the market demands. These

new models have powerful tightening torque thanks to the optimized impact timing, hook and

protector (standard accessories). In addition, each of these new models is equipped with a slide-

type lithium-ion battery to materialize the compact body, built-in LED light, and convenient

remaining battery indicator. Thus the Models WH 14DSL and WR 14DSL are excellent in

performance, user-friendliness and operability.

3. APPLICATIONS

• Tightening/loosening of small screws, tapping screws, wood screws, bolts, nuts, etc.

• Drilling into wood and various other materials (with use of optional accessory drill chuck

adapter).

[Applicable Markets]

• Wood-product assembly: Tightening/loosening of wood screws

• Construction industry: Assembly of scaffolding, roofing, aluminum sashes, fencing, etc.; removal

of plastic cones from concrete forms, mounting/removal of form ties; drilling into the wood

frames of concrete forms, etc.

• Manufacturing industry: Assembly work for automobiles, rolling stock, shipbuilding, agricultural

machinery and tools, industrial machines, steel furniture, etc.

• Utility industry: Assembly and installation of electric equipment, plumbing facilities, air

conditioning (duct assembly etc.), sanitary fixtures and various other facilities.

• Service industry: General repair work; installation of advertising aids, automobile repair,

assembly of garages, carports and storage sheds, etc.

• Various other assembly, construction or repair facilities

4. STANDARD EQUIPMENT

Models WH 14DSL/WR 14DSL

(1) 2LSCK specification: Two BSL 1430 batteries (Li-ion, capacity 3.0 Ah), battery cover,

UC 18YRSL charger and case

(2) NN specification: Only the main body

-2-

5. SELLING POINTS

Powerful tightening torque

Equipped with lightweight and high-capacity (3.0 Ah) lithium-ion battery

Switchable impact rate between save mode and power mode

Model WH 14DSL

Slide type lithium-ion battery

Type BSL 1430 (Capacity: 3.0 Ah)

The Type BSL 1430 lithium-ion battery is equipped with the

overdischarge protection circuit, overcurrent protection circuit

and voltage monitoring circuit for each cell for longer service

life and safety.

• The Model WH 14DSL is equipped with the overdischarge

and overcurrent protection circuit to prevent overdischarge

(overuse) of the battery.

• The Type BSL 1430 lithium-ion battery is equipped with the

voltage monitoring circuit for each cell to prevent overcharge

of the battery.

Charger specifically designed

for slide type lithium-ion

batteries

Model UC 18YRSL Latch

(on both sides)

(2) Remove. (1) Push.

Battery

Tightening torque 145 N•m

(1,480 kgf•cm) Compact body: 145 mm in overall length

• Convenient for continuous operation in narrow places

Easy-to-grip thin handle

New type of hook

Switchable impact rate

between save mode and

power mode

• Suitable for tightening

machine screws

Built-in white LED light

Tool tip is structured without

screws. The protector is a

standard accessory.

Switch and monitor panel

• Remaining battery indicator lamp

• Remaining battery indicator switch

• Light switch

-3-

Latch

(on both sides)

(2) Remove. (1) Push.

Battery

Model WR 14DSL

Slide type lithium-ion battery

Type BSL 1430 (Capacity: 3.0 Ah)

The Type BSL 1430 lithium-ion battery is equipped with the

overdischarge protection circuit, overcurrent protection circuit

and voltage monitoring circuit for each cell for longer service

life and safety.

• The Model WR 14DSL is equipped with the overdischarge

and overcurrent protection circuit to prevent overdischarge

(overuse) of the battery.

• The Type BSL 1430 lithium-ion battery is equipped with the

voltage monitoring circuit for each cell to prevent overcharge

of the battery.

Tightening torque 165 N•m

(1,685 kgf•cm) Compact body: 152 mm in overall length

• Convenient for continuous operation in narrow places

Easy-to-grip thin handle

New type of hook

Switchable impact rate

between save mode and

power mode

• Suitable for tightening

small-diameter bolts

Built-in white LED light

Tool tip is structured without

screws. The protector is a

standard accessory.

Switch and monitor panel

• Remaining battery indicator lamp

• Remaining battery indicator switch

• Light switch

Charger specifically designed

for slide type lithium-ion

batteries

Model UC 18YRSL

-4-

5-1. Selling Point Descriptions

Selling points of the Models WH 14DSL and WR 14DSL:

(1) Equipped with the lightweight and high-capacity (3.0 Ah) lithium-ion battery

• Thanks to the adoption of the lithium-ion batteries, the Models WH 14DSL and WR 14DSL are

substantially lighter than the current models equipped with Ni-MH batteries.

BSL 1430 EB 1430H

Voltage (V) 14.4 14.4

Capacity (Ah) 3.0 3.0

Weight (g) 520 910

The Type BSL 1430 lithium-ion battery is equipped with the overdischarge protection circuit,

overload protection circuit, and voltage monitoring circuit for each cell to prevent shortening of

the battery life due to overdischarge (overuse) or overcharge (excessive charging) of the

battery.

The number of charging/discharging is about 1,500.

Precautions for use of the Type BSL 1430 lithium-ion battery

The Type BSL 1430 lithium-ion battery is equipped with a protective function that

automatically stops output to extend the battery life. The motor may stop automatically in

either of the following case(a)or (b) even if the switch is depressed continuously during

operation. This is because the protective function is activated. The battery is not faulty.

(a)The motor automatically stops when the remaining battery level is low (when the battery

voltage is decreased to about 8 V (Type BSL 1430)). Charge the battery immediately in

such case.

(b)The motor may stop if the Model WH 14DSL/WR 14DSL is overloaded. In such case,

release the switch and eliminate the cause of the overload problem. Then the Model

WH 14DSL/WR 14DSL will be operable.

Please instruct the customers on the above precautions.

(2) Switchable impact rate between save mode and power mode

The impact rate is switchable between two modes (save mode and power mode) according to

applications. Put the Model WH 14DSL/WR 14DSL into the save mode for tightening machine

screws into soft materials or put into the power mode for tightening long screws into hard

materials. These models are very convenient because the impact rate can be adjusted

according to the working conditions.

* Precautions for use in the save mode

If the Model WH 14DSL/WR 14DSL is operated continuously in the save mode, the temperature

of the electronic circuit modules in the switch may rise and it may result in burnout.

Tightening in the save mode*

•Suitable for light load operation

such as retightening machine

screws!

Tightening in the power mode

•Suitable for heavy load operation

such as tightening long screws and

bolts!

Switchable

-5-

(3) Remaining battery indicator

Each of the Models WH 14DSL and WR 14DSL is equipped with the remaining battery

indicator. The battery remaining power can be checked just by pressing the remaining battery

indicator switch.

(4) Built-in white LED light

Each of the Models WH 14DSL and WR 14DSL incorporates the white LED light. It is very

convenient for operation in dark places.

State of

lamp Battery remaining power

The battery remaining power

is enough (about 60% or

higher).

The battery remaining power

is a half.

The battery remaining power

is nearly empty (about 30% or

lower). Recharge the battery

immediately.

NOTE:

• The remaining battery indicator

lamp lights only after the battery

has been installed in the tool and

the trigger switch has been pulled

once.

• The indicator lamps of the high/lo

selector switch and the

single/continuous selector switch

go off immediately even though the

trigger switch is pulled when the

battery remaining power is nearly

empty and the protection function

is activated. It is not faulty.

NOTE:

• To prevent the battery power consumption

caused by forgetting to turn off the LED light,

the light goes off automatically in about 15

minutes.

• The white LED light is lighted by pressing the

light switch only after the battery has been

installed in the tool and the trigger switch has

been pulled once.

Remaining battery indicator switch

Remaining battery indicator lamp

Light switch

-6-

Selling points of the Model WH 14DSL

•High tightening speed and powerful torque: 145 N•m (1480 kgf•cm, 1280 in-lbs.)

(1) Tightening time comparison

Figure 1 shows the time required for tightening a wood screw (5.3 mm dia. x 120 mm

length) into a lauan workpiece.

•WH 14DSL: 7 % higher than P

Fig. 1 Tightening time comparison

* Tightening time may vary depending on hardness of the workpiece, ambient temperature,

characteristics of the battery, etc.

(2) Tightening torque comparison

Figure 2 shows the torque required

for tightening an M14 high-strength

tension bolt in 3 seconds with a

hexagon socket (40 mm long).

•WH 14DSL: 8 % higher than P

Fig. 2 Tightening torque comparison

-7-

Selling points of the Model WR 14DSL

•Powerful tightening torque: 165 N•m (1680 kgf•cm, 1460 in-lbs.)

(1) Tightening torque

Figure 3 shows the torque required for tightening an M16 F10T bolt in 3 seconds with a

hexagon socket (40 mm long).

Fig. 3

* The data above are intended for reference purposes only because actual tightening

torque will vary depending on tightening conditions.

Tightening torque

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