HITACHI WR 12DM, WR 9DM User guide

MODEL	Variable speed	CORDLESS IMPACT WRENCH
MODÈLE	WR 12DM• WR 9DM	CLÉ À CHOC À BATTERIE
MODELO		LLAVE DE IMPACTO A BATERÍA

SAFETY INSTRUCTIONS AND INSTRUCTION MANUAL

WARNING

IMPROPER OR UNSAFE use of this power tool can result in death or serious bodily injury!

This manual contains important information about product safety. Please read and understand this manual BEFORE operating the power tool. Please keep this manual available for other users and owners before they use the power tool. This manual should be stored in safe place.

INSTRUCTIONS DE SECURITE ET MODE D’EMPLOI

AVERTISSEMENT

Une utilisation INCORRECTE OU DANGEREUSE de cet outil motorisé peut entraîner la mort ou de sérieuses blessures corporelles!

Ce mode d’emploi contient d’importantes informations à propos de la sécurité de ce produit. Prière de lire et de comprendre ce mode d’emploi AVANT d’utiliser l’outil motorisé. Garder ce mode d’emploi à la disponibilité des autres utilisateurs et propriétaires avant qu’ils utilisent l’outil motorisé. Ce mode d’emploi doit être conservé dans un endroit sûr.

INSTRUCCIONES DE SEGURIDAD Y MANUAL DE INSTRUCCIONES

ADVERTENCIA

¡La utilización INAPROPIADA O PELIGROSA de esta herramienta eléctrica puede resultar en lesiones de gravedad o la muerte!

Este manual contiene información importante sobre la seguridad del producto. Lea y comprenda este manual ANTES de utilizar la herramienta eléctrica. Guarde este manual para que puedan leerlo otras personas antes de utilizar la herramienta eléctrica. Este manual debe ser guardado en un lugar seguro.

					CONTENTS
	English											Page
					Page
	IMPORTANT SAFETY INFORMATION ...............						3	SPECIFICATIONS ..............................................				11
	MEANINGS OF SIGNAL WORDS .......................						3	ASSEMBLY AND OPERATION				12
	SAFETY ....................................................................						4	APPLICATIONS ..................................................				12
	GENERAL SAFETY RULES – FOR ALL							REMOVAL AND INSTALLATION METHOD
	BATTERY OPERATED TOOLS			.....................			4		OF BATTERY ..................................................			12
	SPECIFIC SAFETY RULES ...................................						6	CHARGING METHOD ........................................				12
	IMPORTANT SAFETY INSTRUCTIONS FOR							BEFORE USE .....................................................				15
	USE OF THE CORDLESS IMPACT WRENCH ....						7	OPERATION .......................................................				15
	IMPORTANT SAFETY INSTRUCTIONS							OPERATIONAL CAUTIONS ..............................				16
	FOR BATTERY CHARGER ............................						7	MAINTENANCE AND INSPECTION				21
	IMPORTANT SAFETY INSTRUCTIONS
	FOR USE OF THE BATTERY AND							ACCESSORIES				23
	BATTERY CHARGER						9
								STANDARD ACCESSORIES				23
	FUNCTIONAL DESCRIPTION ................................						10	OPTIONAL ACCESSORIES ...............................				23
	MODEL ...............................................................						10
	NAME OF PARTS ..............................................						10
				TABLE DES MATIERES
	Français
					Page							Page
	INFORMATIONS IMPORTANTES DE SÉCURITÉ ..						29	SPECIFICATIONS ................................................				38
	SIGNIFICATION DES MOTS D’AVERTISSEMENT ....						29	ASSEMBLAGE ET FONCTIONNEMENT				39
	SECURITE ................................................................						30	UTILISATIONS .....................................................				39
	REGLES GENERALE DE SECURITE – POUR TOUS							MÉTHODE DE RETRAIT ET D’INSTALLATION
	LES OUTILS FONCTIONNANT SUR BATTERIE ...						30		DE LA BATTERIE ..........................................			39
	REGLES DE SECURITE SPECIFIQUES ...............						32	MÉTHODE DE RECHARGE .................................				39
	CONSIGNES DE SÉCURITÉ IMPORTANTES POUR							AVANT L’UTILISATION ......................................				42
								UTILISATION				42
	L'UTILISATION DU CLÉ À CHOC À BATTERIE .....						33
	CONSIGNES DE SÉCURITÉ IMPORTANTES							PRÉCAUTIONS D'UTILISATION .........................				45
	POUR L’UTILISATION DU CHARGEUR DE BATTERIE ...						34	ENTRETIEN ET INSPECTION				49
	CONSIGNES DE SÉCURITÉ IMPORTANTES POUR L’UTILISATION
	DE LA BATTERIE ET DU CHARGEUR DE BATTERIE ...............						35	ACCESOIRES ...........................................................				52
	DESCRIPTION FONCTIONNELLE						37	ACCESSOIRES STANDARD ...............................				52
								ACCESSOIRES EN OPTION ................................				52
	MODELE ...............................................................						37
	NOM DES PARTIES .............................................						37
							ÍNDICE
	Español											Página
					Página			ESPECIFICACIONES
	INFORMACIÓN IMPORTANTE SOBRE SEGURIDAD						58					67
								MONTAJE Y OPERACIÓN				68
	SIGNIFICADO DE LAS PALABRAS DE SEÑALIZACIÓN						58
								APLICACIONES				68
	SEGURIDAD						59	MÉTODO DE EXTRACCIÓN E INSTALACIÓN
									DE LA BATERÍA			68
	NORMAS GENERALES DE SEGURIDAD – PARA TODAS
								MÉTODO DE CARGA				68
	LAS HERRAMIENTAS ALIMENTADAS CON BATERÍA						59
								ANTES DE LA UTILIZACIÓN				71
	NORMAS ESPECÍFICOS DE SEGURIDAD						61
								OPERACIÓN				71
	INSTRUCCIONES IMPORTANTES PARA LA UTILIZACIÓN
								PRECAUCIONES OPERACIONALES				73
	DEL LLAVE DE IMPACTO A BATERÍA						62
				..........................
	INSTRUCCIONES IMPORTANTES DE SEGURIDAD							MANTENIMIENTO E INSPECCIÓN				78
	PARA EL CARGADOR DE BATERÍAS						63
	INSTRUCCIONES IMPORTANTES DE SEGURIDAD							ACCESORIOS ...........................................................				81
	PARA LA BATERÍA Y EL CARGADOR DE BATERÍAS ...						64	ACCESORIOS ESTÁNDAR ..................................				81
	DESCRIPCIÓN FUNCIONAL						66	ACCESORIOS OPCIONALES ..............................				81
	MODELO ..............................................................						66
	NOMENCLATURA ...............................................						66

English

IMPORTANT SAFETY INFORMATION

Read and understand all of the safety precautions, warnings and operating instructions in the Instruction Manual before operating or maintaining this power tool.

Most accidents that result from power tool operation and maintenance are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures.

Basic safety precautions are outlined in the “SAFETY” section of this Instruction Manual and in the sections which contain the operation and maintenance instructions.

Hazards that must be avoided to prevent bodily injury or machine damage are identified by WARNINGS on the power tool and in this Instruction Manual.

NEVER use this power tool in a manner that has not been specifically recommended by HITACHI.

MEANINGS OF SIGNAL WORDS

WARNING indicates a potentially hazardous situations which, if ignored, could result in death or serious injury.

CAUTION indicates a potentially hazardous situations which, if not avoided, may result in minor or moderate injury, or may cause machine damage.

NOTE emphasizes essential information.

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SAFETY

GENERAL SAFETY RULES – FOR ALL BATTERY OPERATED TOOLS

WARNING: Read and understand all instructions.

Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury.

SAVE THESE INSTRUCTIONS

1.Work Area

(1)Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents.

(2)Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust of fumes.

(3)Keep bystanders children, and visitors away while operating a power tool.

Distractions can cause you to lose control.

2.Electrical Safety

(1)A battery operated tool with integral batteries or a separate battery pack must be recharged only with the specified charger for the battery.

A charger that may be suitable for one type of battery may create a risk of fire when used with another battery.

(2)Use battery operated tool only with specifically designed battery pack.

Use of any other batteries may create a risk of fire.

3.Personal Safety

(1)Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating power tools may result in serious personal injury.

(2)Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts.

(3)Avoid accidental starting. Be sure switch is off position before inserting battery.

Carrying tools with your finger on the switch or inserting the battery pack into a tool with the switch on invites accidents.

(4)Remove adjusting keys or wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool may result in personal injury.

(5)Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enable better control of the tool in unexpected situations.

(6)Use safety equipment. Always wear eye protection. Dust mask, non-skid safety shoes, hard hat, or hearing protection must be used for appropriate conditions.

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4.Tool Use and Care

(1)Use clamps or other practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against your body is unstable and may lead to loss of control.

(2)Do not force tool. Use the correct tool for your application. The correct tool will do the job better and safer at the rate for which it is designed.

(3)Do not use tool if switch does not turn it on or off. Any tool that cannot be controlled with the switch is dangerous and must be repaired.

(4)Disconnect battery pack from tool or place the switch in the locked or off position before making any adjustments, changing accessories, or storing the tools. Such preventive safety measures reduce the risk of starting the tool accidentally.

(5)Store idle tools out of reach of children and other untrained persons. Tools are dangerous in the hands of untrained users.

(6)When battery pack is not in use, keep it away from other metal objects like: paper clips, coins, keys, nails, screws, or other small metal objects that can make a connection from one terminal to another.

Shorting the battery terminals together may cause sparks, burns, or a fire.

(7)Maintain tools with care. Keep cutting tools sharp and clean. Properly maintained tools, with sharp cutting edges are less likely to bind and are easier to control.

(8)Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the tools operation. If damaged, have the tool serviced before using. Many accidents are caused by poorly maintained tools.

(9)Use only accessories that are recommended by the manufacturer for your model.

Accessories that may be suitable for one tool, may become hazardous when used on another tool.

5.Service

(1)Tool service must be performed only by qualified repair personnel. Service or maintenance performed by unqualified personnel could result in a risk of injury.

(2)When servicing a tool, use only identical replacement parts. Follow instructions in the Maintenance section of this manual. Use of unauthorized parts or failure to follow Maintenance Instruction may create a risk of electric shock or injury.

WARNING:

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

●Lead from lead-based paints,

●Crystalline silica from bricks and cement and other masonry products, and

●Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.

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English

SPECIFIC SAFETY RULES

1.Hold tools by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator.

2.Never touch moving parts.

Never place your hands, fingers or other body parts near the tool’s moving parts.

3.Never operate without all guards in place.

Never operate this tool without all guards or safety features in place and in proper working order. If maintenance or servicing requires the removal of a guard or safety feature, be sure to replace the guard or safety feature before resuming operation of the tool.

4.Use right tool.

Don’t force small tool or attachment to do the job of a heavy-duty tool.

Don’t use tool for purpose not intended —for example— don’t use circular saw for cutting tree limbs or logs.

5.Never use a power tool for applications other than those specified.

Never use a power tool for applications other than those specified in the Instruction Manual.

6.Handle tool correctly.

Operate the tool according to the instructions provided herein. Do not drop or throw the tool. Never allow the tool to be operated by children, individuals unfamiliar with its operation or unauthorized personnel.

7.Definitions for symbols

V .... volts

— .............	direct current
---
no ............	no load speed
---/min .....	revolutions or reciprocation per minute

8.Keep all screws, bolts and covers tightly in place.

Keep all screws, bolts, and plates tightly mounted. Check their condition periodically.

9.Do not use power tools if the plastic housing or handle is cracked.

Cracks in the tool’s housing or handle can lead to electric shock. Such tools should not be used until repaired.

10.Blades and accessories must be securely mounted to the tool.

Prevent potential injuries to youself or others. Blades, cutting implements and accessories which have been mounted to the tool should be secure and tight.

11.Never use a tool which is defective or operating abnormally.

If the tool appears to be operating unusually, making strange noises, or otherwise appears defective, stop using it immediately and arrange for repairs by a Hitachi authorized service center.

12.Carefully handle power tools.

Should a power tool be dropped or struck against hard materials inadvertently, it may be deformed, cracked, or damaged.

13.Do not wipe plastic parts with solvent.

Solvents such as gasoline, thinner benzine, carbon tetrachloride, and alcohol may damage and crack plastic parts. Do not wipe them with such solvents.

Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry thoroughly.

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IMPORTANT SAFETY INSTRUCTIONS FOR USE OF THE CORDLESS IMPACT WRENCH

WARNING: Death or serious bodily injury could result from improper or unsafe use of the cordless impact wrench. To avoid these risks, follow these basic safety instructions:

1.Never use this wrench handle for any application other than those in this manual.

2.When working in high places, always make sure that there is no one below before starting to work.

3.Always wear eye and ear protection when you work.

4.Confirm whether the socket has any crack in it.

5.Attach the hex. socket securely onto the anvil. If the hex. socket is insufficiently secured, it may drop out and cause an accident. For hex. socket attachment refer to “OPERATION” on page 15.

6.Confirm the tightening torque by a torque wrenck before use in order to ascertain the correct tightening torque to be used.

7.If a universal joint is used, be sure not to operate the unit in a no-load condition. Operatig in this condition is dangerous. When the socket section spins around it may cause injury to hands or bodies, or the resuluting intense vibration may cause the user to drop the tool.

8.Be careful that foreign matters do not block the holes located on both sides of the handle. Also do not close the holes with a tape. The holes act an important role.

IMPORTANT SAFETY INSTRUCTIONS FOR BATTERY CHARGER

1.This manual contains important safety and operating instructions for battery charger Model UC14YF2.

2.Before using battery charger, read all instructions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery.

3.To reduce risk of injury, charge HITACHI rechargeable battery type EB7, EB9, EB12, EB14 series. Other type of batteries may burst causing personal injury and damage.

4.Do not expose battery charger to rain or snow.

5.Use of an attachment not recommended or sold by the battery charger manufacturer may result in a risk of fire, electric shock, or injury to persons.

6.To reduce risk of damage to electric plug and cord, pull by plug when disconnecting battery charger.

7.Make sure cord is located so that it will not be stepped on, tripped over, or otherwise subjected to damage or stress.

8.An extension cord should not be used unless absolutely necessary. Use of improper extension cord could result in a risk of fire and electric shock.

If extension cord must be used make sure:

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a.That blades of extension cord are the same number, size, and shape as those of plug on battery charger:

b.That extension cord is properly wired and in good electrical condition; and

c.That wire size is large enough for AC ampere rating of battery charger as specified in Table 1.

Table 1

RECOMMENDED MINIMUM AWG SIZE FOR

EXTENSION CORDS FOR BATTERY CHARGERS

AC Input Rating Amperes*			AWG Size of Cord
Equal to or	but less	Length of Cord, Feet (Meter)
greater than	than	25 (7.5)	50 (15)	100 (30)	150 (45)
0	2	18	18	18	16
2	3	18	18	16	14
3	4	18	18	16	14

*If the input rating of a battery charger is given in watts rather than in amperes, the corresponding ampere rating is to be determined by dividing the wattage rating by the voltage rating–for example:

1250watts

125 volts = 10 amperes

9.Do not operate battery charger with damaged cord or plug-replace them immediately.

10.Do not operate battery charger if it has received a sharp blow, been dropped, or otherwise damaged in any way; take it to a qualified serviceman.

11.Do not disassemble battery charger; take it to a qualified serviceman when service or repair is required. Incorrect reassembly may result in a risk of electric shock or fire.

12.To reduce risk of electric shock, unplug charger from receptacle before attempting any maintenance or cleaning. Removing the battery will not reduce this risk.

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IMPORTANT SAFETY INSTRUCTIONS FOR USE OF THE BATTERY AND BATTERY CHARGER

You must charge the battery before you can use the cordless impact wrench. Before using the model UC14YF2 battery charger, be sure to read all instructions and cautionary statements on it, the battery and in this manual.

REMEMBER: USE ONLY HITACHI BATTERY TYPES EB7 SERIES, EB9 SERIES, EB12 SERIES, EB14 SERIES. OTHER TYPES OF BATTERIES MAY BURST AND CAUSE INJURY!

Follow these instructions to avoid the risk of injury:

WARNING: Improper use of the battery or battery charger can lead to serious injury. To avoid these injuries:

1.NEVER disassemble the battery.

2.NEVER incinerate the battery, even if it is damaged or is completely worn out. The

battery can explode in a fire.

3.NEVER short-circuit the battery.

4.NEVER insert any objects into the battery charger’s air vents. Electric shock or

damage to the battery charger may result.

5. NEVER charge outdoors. Keep the battery away from direct sunlight and use only where there is low humidity and good ventilation.

6.NEVER charge when the temperature is below 32°F (0°C) or above 104°F (40°C).

7.NEVER connect two battery chargers together.

8.NEVER insert foreign objects into the hole for the battery or the battery charger.

9.NEVER use a booster transformer when charging.

10.NEVER use an engine generator or DC power to charge.

11.NEVER store the battery or battery charger in places where the temperature may

reach or exceed 104°F (40°C).

12. ALWAYS operate charger on standard household electrical power (120 volts). Using the charger on any other voltage may overheat and damage the charger.

13.ALWAYS wait at least 15 minutes between charges to avoid overheating the charger.

14.ALWAYS disconnect the power cord from its receptacle when the charger is not in use.

SAVE THESE INSTRUCTIONS

AND

MAKE THEM AVAILABLE TO

OTHER USERS

AND

OWNERS OF THIS TOOL!

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FUNCTIONAL DESCRIPTION

NOTE: The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool.

NEVER operate, or attempt any maintenance on the tool unless you have first read and understood all safety instructions contained in this manual.

Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own power tool.

MODEL

WR12DM: with charger (UC14YF2) and case

WR9DM: with charger (UC14YF2) and case

NAME OF PARTS

1. Cordless Impact Wrench

	Housing	Nameplate
		Air Vents
	Switch Trigger	Push Button
WR12DM: 1/2" (12.7 mm)	Handle	Convenient
WR9DM: 3/8" (9.5 mm)		Hook

Battery	Battery
Terminal	Terminal
Hole
	Hole

Nameplate	Latch		Nameplate	Latch
EB1220BL				EB9B
		Fig. 1

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2. Battery Charger (UC14YF2)

	Pilot Lamp		Battery Installation Hole
				Caution Plate
				Body
	Cord
				Nameplate
			Fig. 2
	SPECIFICATIONS
	1. Cordless Impact Wrench
	MODEL		WR9DM	WR12DM
			(9.6V)	(12V)
	Motor		DC motor
	No-load speed		0 – 2,300/min
	Drive	3/8" (9.5 mm) square		1/2" (12.7 mm) square
	Capacity	1/4" – 9/16" (M6 – M14)		1/4" – 5/8" (M6 – M16)
		(Ordinary bolt)		(Ordinary bolt)
		1/4" – 3/8" (M6 – M10)		1/4" – 15/32" (M6 – M12)
		(High tension bolt)		(High tension bolt)
	Tightening torque	Maximum 780 in-lbs		Maximum 1330 in-lbs
			(88.2 N·m, 900 kgf·m)	(150 N·m, 1530 kgf·m)
		Tightening is 15/32" (M12)		Tightening is 5/8" (M16) F10T,
		high tension bolt, when fully		when fully charged at 20°C
		charged in 20°C temp.		temp.
		Tighttening time: 3 sec.		Tightening time: 3 sec.
	Rechargeable		EB9B (2.0 Ah)	EB1220BL (2.0 Ah)
	battery	Ni-Cd battery, 9.6V		Ni-Cd battery, 12V
		Charging and discharging		Charging and discharging
		Frequency: about 1000		Frequency: about 1000
	Weight		3.0 lbs (1.4 kg)	3.5 lbs (1.6 kg)
	2. Battery Charger (UC 14YF2)
	Input power source	Single phase: AC120V, 60Hz
	Charging time	Approx. 60min. (At a temperature of 68°F (20°C))
	Charger	Charging voltage .......................... DC 7.2–14.4V
		Charging current ........................... DC 1.9A
	Weight	2.9 lbs (1.3kg)

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ASSEMBLY AND OPERATION

APPLICATIONS

Tightening and loosening of all types of bolts and nuts, used for securing structural items.

REMOVAL AND INSTALLATION METHOD OF BATTERY

Handle

Latch

Insert

Rechargeable battery

Pull out

Fig. 3

How to install the battery.

Align the battery with the groove in tool handle and slip it into place.

Always insert it all the way until it locks in place with a little click, If not, it may accidentally fall out of the tool, causing injury to you or someone around you. (Fig. 3)

How to remove the battery.

Withdraw battery from the tool handle while pressing the latch on the side of the battery. (Fig. 3)

CHARGING METHOD

NOTE: Before plugging into the receptacle, make sure the following points.

The power source voltage is stated on the nameplate.

The cord is not damaged.

WARNING: Do not charge at voltage higher than indicated on the nameplate.

If charged at voltage higher than indicated on the nameplate, the charger will burn up.

Rechargeable battery

d

Battery installation hole

Pilot lamp

1.Insert the plug of battery charger into the receptacle.

When the plug of battery charger has been inserted into the receptacle, pilot lamp will blink in red. (At 1-second intervals)

WARNING:

Do not use the electrical cord if damaged. Have it repaired immediately.

Fig. 4

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2.Insert the battery to the battery charger.

Insert the battery into the battery charger as shown in Fig. 4. Make sure it contacts the bottom of the battery charger.

CAUTION:

●If the batteries are inserted in the reverse direction, not only recharging will become impossible, but it may also cause problems in the charger such as a deformed recharging terminal.

3.Charging

When the battery is connected to the battery charger, charging will commence and the pilot lamp will light in red. (See Table 2)

NOTE: If the pilot lamp flikers in red, pull out the plug from the receptacle and check if the battery is properly mounted.

When the battery is fully charged, the pilot lamp will blink in red slowly. (At 1-second intervals) (See Table 2)

(1)Pilot lamp indication

The indications of the pilot lamp will be as shown in Table 2, according to the condition of the charger or the rechargeable battery.

Table 2

Indications of the pilot lamp

Before

Blinks

Lights for 0.5 seconds. Does not light for

charging

(RED)

0.5 seconds. (off for 0.5 seconds)

While

Lights

Lights continuously

charging

(RED)

Charging

Blinks

Lights for 0.5 seconds. Does not light for

complete

(RED)

0.5 seconds. (off for 0.5 seconds)

Charging

Flikers

Lights for 0.1 seconds. Does not light for

Malfunction in the battery or the

impossible

(RED)

0.1 seconds. (off for 0.1 seconds)

charger

Charging

Lights

Lights continuously

The battery temperature is high,

impossible

(GREEN)

making recharging impossible.

(2)Regarding the temperature of the rechargeable battery.

The temperatures for rechargeable batteries are as shown in the table below, and batteries that have become hot should be cooled for a while before being recharged.

Table 3 Recharging of batteries that have become hot

	Rechargeable batteries	Temperatures at which the battery can be recharged
	EB9B, EB1220BL	23°F—140°F
		(–5°C—60°C)

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(3)Regarding recharging time (At 68°F (20°C)) In approx. 60 minutes.

NOTE: The charging time may vary according to temperature and power source voltage.

4. Disconnect battery charger from the receptacle.

CAUTION:

Do not pull the plug out of the receptacle by pulling on the cord.

Make sure to grasp the plug when removing from receptacle to avoid damaging cord.

5.Remove the battery from the battery charger.

Supporting the battery charger with hand, pull out the battery from the battery charger.

CAUTION:

●When the battery charger has been continuosly used, the battery charger will be heated, thus constituting the cause of the failures. Once the charging has been completed, give 15 minutes rest until the next charging.

●If the battery is rechraged when it is warm due to battery use or exposure to sunlight, the pilot lamp may light in green.

The battery will not be recharged. In such a case, let the battery cool before charging.

●When the pilot lamp flikers rapidly in red (at 0.2–second intervals), check for and take out any foreign objects in the charger’s battery installation hole. If there are no foreign objects, it is probable that the battery or charger is malfunctioning. Take it to your authorized Service Center.

●Since the built-in micro computer takes about 3 seconds to confirm that the battery being charged with UC14YF2 is taken out, wait for a minimum of 3 seconds before reinserting it to continue charging. If the battery is reinserted within 3 seconds, the battery may not be properly charged.

Regarding electric discharge in case of new batteries, etc.

As the internal chemical substance of new batteries and batteries that have not been used for an extended period is not activated, the electric discharge might be low when using them the first and second time. This is a temporary phenomenon, and normal time required for recharging will be restored by recharging the batteries 2 – 3 times.

How to make the batteries perform longer.

(1)Recharge the batteries before they become completely exhausted.

When you feel that the power of the tool becomes weaker, stop using the tool and recharge its battery. If you continue to use the tool and exhaust the electric current, the battery may be damaged and its life will become shorter.

(2)Avoid recharging at high temperatures.

A rechargeable battery will be hot immediately after use. If such a battery is recharged immediately after use, its internal chemical substance will deteriorate, and the battery life will be shortened. Leave the battery and recharge it after it has cooled for a while.

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BEFORE USE

Check the work area to make sure that it is clear of debris and clutter.

Clear the area of unnecessary personnel. Ensure that lighting and ventilation is adequate.

OPERATION

1.Using the convenient hook

The convenient hook can be installed on the right or left side and the angle can be adjusted in 5 steps between 0 and 80.

(1)Operating the hook

(a)Pull out the hook toward you in the direction of arrow (A) and turn in the direction of arrow (B). (Fig. 5)

(b)The angle can be adjusted in 5 steps (0°, 20°, 40°, 60°, 80°).

Adjust the angle of the hook to the desired position for use.

(2)Switching the hook position

CAUTION:

●If the tool falls, there is a risk that malfunction and/ or physical damage can occur. It is recommended that you also use fall-preventing wires, etc.

●Incomplete installation of the hook may result in bodily injury when used.

(a)Securely hold the main unit and remove the screw using a slotted head screwdriver or a coin. (Fig. 6)

(b)Remove the hook and spring. (Fig. 7)

(c)Install the hook and spring on the other side and securely fasten with screw. (Fig. 8)

NOTE:

Pay attention to the spring orientation. Install the spring with larger diameter away from you. (Fig. 8)

Convenient Hook

Fig. 5

Fig. 6

Spring

Fig. 7

Larger diameter faces away

Fig. 8

15

English

2.Selecting the socket matched to the bolt

Be sure to use a socket which is matched to the bolt to be tightened. Using an improper socket will not only result in insufficient tightening but also in damage to the socket or nut.

A worn or deformed hex or square-holed socket will not give an adequate tightness for fitting to the nut or anvil, consequently resulting in loss of tightening torque.

Pay attention to wear of socket hole, and replace before further wear has developed.

Matching socket and bolt sizes are shown Tables 4, 5, 6 and 7. The numerical value of a socket designation denotes the side-to-side distance (H) of its hex. hole.

3.Installing a socket (Fig. 9, 10)

Align the plunger located in the square part of the anvil with the hole in the hex. socket. Then push the plunger, and mount the hex. socket on the anvil. Check that the plunger is fully engaged in the hole. When removing the socket, reverse the sequence.

4.Removing the socket

Please do the opposite point on the method of installing socket.

5.Confirm that the battery is mounted correctly.

6.Check the rotational direction

The bit rotates clockwise (viewed from the rear side) by pushing the R-side of the push button. The L-side of the push button is pushed to turn the bit counterclockwise. (See Fig. 11). (The L and R marks are engraved on the body.)

Hexagonal socket

Groove Anvil

Fig. 9

Hexagonal

socket Plunger Hole Anvil

	Fig. 10
R	Push	L
	button

Push

Push

Fig. 11

CAUTION

The push button can not be switched while the impact driver is turning. To switch the push button, stop the impact driver, then set the push button.

7. Switch operation

When the trigger switch is depressed, the tool rotates. When the trigger is released, the tool stops.

The rotational speed can be controlled by varying the amount that the trigger switch is pulled. Speed is low when the trigger switch is pulled slightly and increases as the trigger switch is pulled more.

NOTE

A buzzing noise is produced when the motor is about to rotate; this is only a noise, not a machine failure.

16

English

8.Tightening and loosening bolts

A hex socket matching the bolt or nut must first be selected. Then mount the socket on the anvil, and grip the nut to be tightened with the hex socket. Holding the wrench in line with the bolt, press the power switch to impact the nut for several seconds.

If the nut is only loosely fitted to the bolt, the bolt may turn wit the nut, therefore mistaking proper tightening. In this case, stop impact on the nut and hold the bolt head with a wrench before restarting impact, or manually tighten the bolt and nut to prevent them slipping.

9.Number of bolt tightened possible

Please refer to the table below for the number of bolt tightened possible with one charge.

<For WR12DM> (EB1220BL)

	Bolt used	No. of tightenings
	5/8" × 2–5/32" (M16 × 55) F10T bolt	Approx. 90
<For WR9DM> (EB9B)
	Bolt used	No. of tightenings
	Ordinary bolt 15/32" × 1–3/4" (M12 × 45)	Approx. 90

These values may vary slightly, according to surrounding temperature and battery characteristics.

OPERATIONAL CAUTIONS

1.Resting the unit after continuous work

After use for continuous bolt-tightening work, rest the unit for 15 minutes or so when replacing the battery. The temperature of the motor, switch, etc., will rise if the work is started again immediately after battery replacement, eventually resulting in burnout.

CAUTION: Do not touch the hammer case, as it gets very hot during continuous work.

2.Cautions on use of the speed control switch

This switch has a built-in, electronic circuit which steplessly varies the rotation speed. Consequently, when the switch trigger is pulled only slightly (low speed rotation) and the motor is stopped while continuously driving in screws, the components of the electronic circuit parts may overheat and be damaged.

3.Tightening torque

Refer to Fig. 12 and 13 for the tightening torque of bolts (according to size), under the conditions shown in Fig. 14. Please use this example as a general reference, as tightening torque will vary according to tightening conditions.

Tightening torque varies, depending on the battery’s charge level. Fig. 15 and 16 shows an example of the relationship between tightening torque and the number of tightenings (WR12DM and WR9DM). As shown, tightening torque gradually weakens with the increase in the number of tightenings. In particular, as the torque decreases very close to the complete discharge (“a” margin in graph), the unit’s impact weakens, the number of time impacts declines and tightening torque drops off abruptly. If this occurs, check torque level, then recharge the battery if necessary.

17

English

NOTE

If a long striking time is used, screws will be strongly tightened. This may cause the screw to break, or may damage the end of the bit.

If the unit is held at an angle to the screw being tightened, the head of the screw may be damaged, or the specified torque may not be transmitted to the screw. Always keep the unit and the screw being tightened in a straight line.

4.Use a tightening time suitable for the screw

The appropriate torque for a screw differs according to the material and size of the screw, and the material being screwed etc., so please use a tightening time suitable for the screw. In particular, if a long tightening time is used in the case of screws smaller than 5/16" (8 mm), there is a danger of the screw breaking, so please confirm the tightening time and the tightening torque beforehand.

5.Work at a tightening torque suitable for the bolt under impact

The optimum tightening torque for nuts or bolts differs with material and size of the nuts or bolts. An excessively large tightening torque for a small bolt may stretch or break the bolt. The tightening torque increases in proportionate to the operaton time. Use the correct operating time for the bolt.

6.Holding the tool

Hold the impact wrench firmly with both hands. In this case hold the wrench in line with the bolt. It is not necessary to push the wrench very hard. Hold the wrench with a force just sufficient to counteract the impact force.

7.Confirm the tightening torque

The following factors contribute to a reduction of the tightening torque. So confirm the actual tightening torque needed by screwing up some bolts before the job with a hand

torque wrench. Factors affecting the tightening torque are as follows.

(1)Voltage

When the discharge margin is reached, voltage decreases and tightening torque is lowered.

(2)Operating time

The tightening torque increases when the operating time increases. But the tightening torque does not increase above a certain value even if the tool is driven for a long time. (See Fig. 12 and 13)

(3)Diameter of bolt

The tightening torque differs with the diameter of the bolt as shown in Fig. 12 and 13. Generally a larger diameter bolt requires larger tightening torque.

(4)Tightening conditions

The tightening torque differs according to the torque ratio; class, and length of bolts even when bolts with the same size threads are used. The tightening torque also differs according to the condition of the surface of workpiece through which the bolts are to be tightened. When the bolt and nut turn together, torque is greatly reduced.

(5)Using optional parts

The tightening torque is reduced a little when an extension bar, universal joint or a long socketis used.

(6)Clearance of the socket

A worn or deformed hex or a square-holed socket will not give an adequate tightness to the fitting between the nut or anvil, consequently resulting in loss of tightening torque. Using an improper socket which does not match to the bolt will result in an insufficient tightening torque. Matching socket and bolt sizes are shown in Table 4, 5, 6 and 7.

18

<For WR12DM>

kgf·cm 3/8"×1-5/32" (in-lbs) N·m (M10×30)

	1000		100
<![if ! IE]> <![endif]>torque	(868)
	600
	800		80
	(694)							High		strenge
<![if ! IE]> <![endif]>Tightening	(521)			60				bolt
	(174)
	400		40			Ordinary bolt
	(347)
	200		20
	0		0
		0			1			2			3

Tightening time: sec

(Steel plate thickness t = 3/8" (10 mm))

<For WR9DM>

	kgf·cm			N·m		5/16"×1-3/6"
	(in-lbs)						(M8×30)
	1000			100
	(868)					High		strenge	bolt
<![if ! IE]> <![endif]>torque	800			80
	600			60
	(694)
<![if ! IE]> <![endif]>Tightening	(521)
	400			40
	(347)
							Ordinary bolt
	200			20
	(174)
	0			0
				0		1		2			3

Tightening time: sec

(Steel plate thickness t = 3/8" (10 mm))

English

kgf·cm 15/32"×1-3/4" (in-lbs) N·m (M12×45)

	1400		140
	(1215)
	1200			120
<![if ! IE]> <![endif]>torque	(1642)
	1000		100
						High strenge bolt
	(868)
			80
<![if ! IE]> <![endif]>Tightening	800
	(694)
	600			60
	(521)						Ordinary bolt
	400		40
	(347)
	200		20
	(174)
	0		0
		0				1		2			3

Tightening time: sec

(Steel plate thickness t = 1" (25 mm))

kgf·cm 9/16"×1-15/16" (in-lbs) N·m (M14×50)

	1600		160
	(1389)		140
	1400
	(1215)			120
	1200
<![if ! IE]> <![endif]>torque	(1042)		100		High		strenge		bolt
	(868)
	1000
<![if ! IE]> <![endif]>Tightening	800		80
		40
	(694)
				60
	600
	(521)					Ordinary bolt
	400
	(347)		20
	200
	(174)		0
	0
		0				1		2			3

Tightening time: sec

(Steel plate thickness t = 1" (25 mm))

Fig. 12

	kgf·cm	N·m			3/8"×1-3/6"							kgf·cm	N·m			15/32"×1-3/4"
	(in-lbs)				(M10×30)							(in-lbs)					(M12×45)
	1000	100										1000	100
	(868)											(868)			High strenge
		80		High strenge bolt											bolt
<![if ! IE]> <![endif]>torque	800										<![if ! IE]> <![endif]>torque	800	80
	600	60											60
	(694)											(694)
<![if ! IE]> <![endif]>Tightening	(521)										<![if ! IE]> <![endif]>Tightening	600
		20										(521)	20
	200
	400	40										400	40
	(347)
												(347)
						Ordinary bolt											Ordinary bolt
	(174)											200
												(174)
	0	0										0	0
					1		2		3
																1			2	3
		0											0
		Tightening					time: sec						Tightening						time: sec
		(Steel			plate		thickness						(Steel			plate			thickness
		t = 3/8" (10 mm))											t = 1" (25 mm))

Fig. 13

19

English

Bolt	Steel plate
	thickness t

Nut

<For WR12DM>

*The following bolt is used. Ordinary bolt: Strength grade 4.8

High tensile bolt: Hardness division 12.9

(	Explanation of strength grade:
	4 — Yield point of bolt: 45,500 psi (32 kgf/mm2)
	8 — Pulling strength of bolt: 56,900 psi (40 kgf/mm2) )

Fig. 14

<![if ! IE]>

<![endif]>Tightening torque

kgf·cm			N·m 5/8" × 2–5/32" (M16 × 55) F10T bolt (tightening time 3 sec)
(in-lbs)
1600			160
						a
(1389)
1200			120
					When full recharged
(1042)

800 80

(694)

400 40

(347)When complately discharged

0 0

0

20

40

60

80

100

120

140

Number of tightenings (PCS)/charging

Fig. 15

<For WR9DM>

<![if ! IE]>

<![endif]>Tightening torque

kgf·cm		N·m 15/32" × 1–3/4" (M12 × 45) High tension bolt
(in-lbs)				(tightening time 3 sec)
		160
1600
(1389)					a
1200		120
(1042)
800		80
(694)
				When full recharged
400		40

(347)When complately discharged

	0	0
		0	20	40	60	80	100	120	140	160

Number of tightenings (PCS)/charging

Fig. 16

20

English

MAINTENANCE AND INSPECTION

CAUTION: Pull out battery before doing any inspection or maintenance.

1.Checking the condition of the socket.

A worn or deformed hex or a square-holed socket will not give an adequate tihgtness to the fitting between the nut or anvil, consequently resulting in loss of tihgtening torque. Pay attention to wear of a socket holes periodically, and replace with a new one if needed.

2.Check the Screws

Loose screws are dangerous. Regularly inspect them and make sure they are tight.

CAUTION: Using this power tool with loosened, screws is extremely dangerous.

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. 17)

The motor employs carbon brushes which are consumable parts. Since and excessively worn carbon brush can result in motor trouble, replace the carbon brush with new ones 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.

NOTE:

When replacing the carbon brush with a new one, be sure to use the Hitachi Carbon Brush Code No. 999054.

5.Replacing carbon brushes

Wear limit

0.12" (3mm)

0.45"

(11.5mm)

Fig. 17

Nail of carbon brush

Protrusion of carbon brush

Fig. 18

Take out the carbon brush by first removing the brush cap and then hooking the protrusion of the carbon brush with a flat head screw driver, etc., as shown in Fig. 19.

When installing the carbon brush, choose the direction so that the nail of the carbon brush agrees with the contact portion outside the brush tube. Then push it in with a finger as illustrated in Fig. 20. Lastly, install the brush cap.

Fig. 19

21

English

CAUTION:

Be absolutely sure to insert the nail of the carbon brush into the contact portion outside the brush tube. (You can insert whichever one of the two nails provided.)

Caution must be exercised since any error in this operation can result in the deformed nail of the carbon brush and may cause motor trouble at an early stage.

6. Check for Dust

Contact portion outside brush tube

Fig. 20

Dust may be removed with a soft cloth or a cloth dampened with soapy water.

Do not use bleach, chlorine, gasoline or thinner, for they may damage the plastics.

7. Disposal of the exhausted battery

WARNING: Do not dispose of the exhausted battery. The battery must explode if it is incinerated. The product that you have purchased contains a rechargeable battery. The battery is recyclable. At the end of it’s useful life, under various state and local laws, it may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste officials for details in your area for recycling options or proper disposal.

8.Storage

Storing in a place below 104°F (40°C) and out of the reach of children.

9.Service and repairs

All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a HITACHI AUTHORIZED SERVICE CENTER, ONLY.

10.Service parts list

CAUTION: Repair, modification and inspection of Hitachi Power Tools must be carried out by an Hitachi Authorized Service Center.

This Parts List will be helpful if presented with the tool to the Hitachi Authorized Service Center when requesting repair or other maintenance. In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed.

MODIFICATIONS:

Hitachi Power Tools are constantly being improved and modified to incorporate the latest technological advancements.

Accordingly, some parts (i.e. code numbers and/or design) may be changed without prior notice.

22

English

ACCESSORIES

WARNING: ALWAYS use Only authorized HITACHI replacement parts and accessories. NEVER use replacement parts or accessories which are not intended for use with this tool. Contact HITACHI if you are not sure whether it is safe to use a particular replacement part or accessory with your tool.

The use of any other attachment or accessory can be dangerous and could cause injury or mechanical damage.

NOTE:

Accessories are subject to change without any obligation on the part of the HITACHI.

STANDARD ACCESSORIES

1

2

1	Battery Charger (UC14YF2) ..........................	1
2	Plastic Case (Code No. 319924) ...................	1

Fig. 21

OPTIONAL ACCESSORIES.....sold separately

1. Battery

EB1220BL (Code No. 320386)

EB9B (Code No. 310451)

Fig. 22

23

English
2.	Sockets
Form B				Form C			Form D
	<![if ! IE]> <![endif]>ØF				<![if ! IE]> <![endif]>ØF			<![if ! IE]> <![endif]>ØF
	L1				L1			L1
	H	L	S	H		S
					L		H		S
								L

<For WR12DM>

Table 4

Square

Suitable Bolt Diameter

Hexagonal

Main Socket

head drive

Part Name

Code No.

High

ISO

ISO

Inch

width across

Form

Dimensions

dimensions S

tension

(ordinary)

(small)

bolts

flats H

L

L1

øF

10 mm

944291

M6

25/64"

B

1-9/16"

5/16"

11/16"

(10 mm)

(40 mm)

(8 mm)

(18 mm)

12 mm

873632

M8

W5/16"

15/32"

B

1-9/16"

5/16"

25/32"

(12 mm)

(40 mm)

(8 mm)

(20 mm)

13 mm

873539

M8

33/64"

B

1-9/16"

11/32"

1"

(13 mm)

(40 mm)

(9 mm)

(25 mm)

14 mm

873540

M10

9/16"

B

1-9/16"

11/32"

1"

1/2"

Hexagonal

(14 mm)

(40 mm)

(9 mm)

(25 mm)

11/16"

1-1/4"

5/16"

1-3/32"

(12.7 mm)

Socket

17 mm

873536

M10

M12

W3/8"

C

(17 mm)

(32 mm)

(8 mm)

(28 mm)

19 mm

873624

M12

M14

W7/16"

3/4"

C

1-11/32"

11/32"

1-3/32"

(19 mm)

(34 mm)

(9 mm)

(28 mm)

21 mm

873626

W1/2"

13/16"

D

1-13/32"

3/8"

1-1/4"

(21 mm)

(36 mm)

(10 mm)

(32 mm)

22 mm

873627

M12

M14

M16

7/8"

D

1-9/16"

9/16"

1-3/8"

(22 mm)

(40 mm)

(14 mm)

(35 mm)

24 mm

873629

M16

M18

15/16"

D

1-9/16"

9/16"

1-1/2"

(24 mm)

(40 mm)

(15 mm)

(38 mm)

<For WR9DM>

Table 5

Square head

Code

Suitable Bolt Diameter

Hexagonal

Main Socket

drive dimen-

Part Name

ISO

ISO

Inch

width across

Form

Dimensions

No.

sions S

(ordinary)

(small)

bolts

flats H

L

L1

øF

8

mm

996125

M5 (3/16")

5/16" (8 mm)

B

1-5/16"

3/16"

1/2"

(33 mm)

(5 mm)

(13 mm)

10

mm

996126

M6 (3/4")

3/8" (10 mm)

B

1-5/16"

1/4"

5/8"

(33 mm)

(6 mm)

(16 mm)

12

mm

996127

M8 (5/16")

W5/16"

15/32" (12 mm)

C

1-5/16"

9/32"

3/4"

(33 mm)

(7 mm)

(19 mm)

13

mm

996128

M8 (5/16")

1/2" (13 mm)

B

1-5/16"

5/16"

25/32"

(33 mm)

(8 mm)

(20 mm)

3/8"

Hexagonal

14

mm

996129

M10 (3/8")

9/16" (14 mm)

B

1-5/16"

5/16"

13/16"

(9.5 mm)

Socket

(33 mm)

(8 mm)

(21 mm)

16

mm

996130

M10 (3/8")

5/8" (16 mm)

D

1-5/16"

11/32"

15/16"

(33 mm)

(9 mm)

(24 mm)

17

mm

996131

M10 (3/8")

M12 (15/32")

W3/8"

21/32" (17 mm)

D

1-5/16"

3/8"

1"

(33 mm)

(10 mm)

(25 mm)

18

mm

996132

M12 (15/32")

23/32" (18 mm)

D

1-5/16"

3/8"

1-1/32"

(33 mm)

(10 mm)

(26 mm)

19

mm

996133

M12 (15/32")

W7/16"

3/4" (19 mm)

D

1-5/16"

15/32"

1-1/16"

(33 mm)

(12 mm)

(27.5 mm)

24

English

3. Long Socket

Form B
	<![if ! IE]> <![endif]>ØF
H	L1	S
	L2
		L

Form C
	<![if ! IE]> <![endif]>ØF
H	L1	S
	L2
		L

Form D
	<![if ! IE]> <![endif]>ØF
	L1	S
H	L2
		L

<For WR12DM>

Table 6

Square

Code

Suitable Bolt Diameter

Hexagonal

Main Socket

head drive

Part Name

High

ISO

ISO

Inch

width across

Form

Dimensions

No.

dimensions S

tension

(ordinary)

(small)

bolts

flats H

L

L1

L2

øF

12 mm

955138

M8

W5/16"

15/32"

B

2-3/64"

25/32"

1-11/32"

25/32"

(12 mm)

(52 mm)

(20 mm)

(34 mm)

(20 mm)

13 mm

955139

M8

33/64"

B

2-3/64"

25/32"

1-11/32"

53/64"

(13 mm)

(52 mm)

(20 mm)

(34 mm)

(21-5 mm)

14 mm

955140

M10

9/16"

B

2-3/64"

25/32"

1-11/32"

7/8"

(14 mm)

(52 mm)

(20 mm)

(34 mm)

(22 mm)

17 mm

955141

M10

M12

W3/8"

11/16"

B

2-3/64"

15/16"

1-11/32"

1"

(17 mm)

(52 mm)

(24 mm)

(34 mm)

(25 mm)

17 mm

955149

M10

M12

W3/8"

11/16"

B

2-15/16"

15/16"

2-1/4"

1"

(17 mm)

(75 mm)

(24 mm)

(57 mm)

(25 mm)

1/2"

Long

19 mm

955142

M12

M14

W7/16"

3/4"

B

2-3/64"

15/16"

1/11/32"

1-3/32"

(19 mm)

(52 mm)

(24 mm)

(34 mm)

(28 mm)

(12.7 mm)

Socket

19 mm

955150

M12

M14

W7/16"

3/4"

B

2-15/16"

15/16"

2-1/4"

1-3/32"

(19 mm)

(75 mm)

(24 mm)

(57 mm)

(28 mm)

21 mm

955143

W1/2"

13/16"

D

2-3/64"

15/16"

1-11/32"

1-7/32"

(21 mm)

(52 mm)

(24 mm)

(34 mm)

(31 mm)

21 mm

955151

W1/2"

13/16"

D

2-15/16"

15/16"

2-1/4"

1-7/32"

(21 mm)

(75 mm)

(24 mm)

(57 mm)

(31 mm)

21 mm

991480

W1/2"

13/16"

D

4-15/16"

15/16"

4-7/32"

1-7/32"

(21 mm)

(125 mm)

(24 mm)

(107 mm)

(31 mm)

22 mm

955144

M12

M14

M16

7/8"

D

2-3/64"

15/16"

1-11/32"

1-9/32"

(22 mm)

(52 mm)

(24 mm)

(34 mm)

(32.5 mm)

24 mm

955146

M16

M18

15/16"

D

2-3/64"

63/64"

1-11/32"

1-11/32"

(24 mm)

(52 mm)

(25 mm)

(34 mm)

(34 mm)

<For WR9DM>

Table 7

Square head

Suitable Bolt Diameter

Hexagonal

Main Socket

drive dimen-

Part Name

Code

ISO

ISO

Inch

width across

Form

Dimensions

sions S

No.

(ordinary)

(small)

bolts

flats H

L

L1

L2

øF

8 mm

996134

M5 (3/16")

5/16" (8 mm)

B

2-3/8"

15/32"

1-7/8"

1/2"

(60 mm)

(12 mm)

(48 mm)

(13 mm)

10

mm

996135

M6 (1/4")

3/8" (10 mm)

B

2-3/8"

15/32"

1-7/8"

5/8"

(60 mm)

(12 mm)

(48 mm)

(16 mm)

12

mm

996136

M8 (5/16")

W5/16"

15/32" (12 mm)

C

2-3/8"

9/16"

1-7/8"

23/32"

(60 mm)

(14 mm)

(48 mm)

(18.4 mm)

13

mm

996137

M8 (5/16")

1/2" (13 mm)

B

2-3/8"

9/16"

1-7/8"

3/4"

(60 mm)

(14 mm)

(48 mm)

(18.9 mm)

3/8"

Long

14

mm

996138

M10 (3/8")

9/16" (14 mm)

B

2-3/8"

19/32"

1-7/8"

49/64"

(9.5 mm)

Socket

(60 mm)

(15 mm)

(48 mm)

(19.5 mm)

16

mm

996139

M10 (3/8")

5/8" (16 mm)

D

2-3/8"

19/32"

1-7/8"

15/16"

(60 mm)

(15 mm)

(48 mm)

(24 mm)

17

mm

996140

M10 (3/8")

M12 (15/32")

W3/8"

21/32" (17 mm)

D

2-3/8"

19/32"

1-7/8"

1"

(60 mm)

(15 mm)

(48 mm)

(25 mm)

18

mm

996141

M12 (15/32")

23/32" (18 mm)

D

2-3/8"

5/8"

1-7/8"

1-1/32"

(60 mm)

(16 mm)

(48 mm)

(26 mm)

19

mm

996142

M12 (15/32")

W7/16"

3/4" (19 mm)

D

2-3/8"

21/32"

1-7/8"

1-1/16"

(60 mm)

(17 mm)

(48 mm)

(27.5 mm)

25

English

4.Extension bar: (WR12DM, WR9DM)

The extension bar is convenient for working in very restricted spaces or when the socket provided cannot reach the bolt to be tightened.

CAUTION

When the extension bar is used, the tightening torque is reduced slightly compared with the ordinary socket.

		B	Code No.	dimention B, S	Model
	s		873633	1/2" (12.7 mm)	WR12DM
			996143	3/8" (9.5 mm)	WR9DM
		Fig. 23

5.Universal joint: (WR12DM, WR9DM)

The universal joint is convenient for impacting nuts when there is an angle between the socket and wrench, or when working in a very narrow space.

	B	Code No.	dimention B, S	Model
		992610	1/2" (12.7 mm)	WR12DM
	S
		996147	3/8" (9.5 mm)	WR9DM

Fig. 24

6.Duct Socket: (WR12DM)

This is used for tightening bolts and nuts on flange sections of air conditioners, type ducts, etc.

S

Fig. 25

	Code No.	Hexagonal width across flats	Dimention S
	993658	15/32" (12 mm)	1/2"
	992613	1/2" (13 mm)
			(12, 7 mm)
	992615	9/16" (14 mm)

7.Corner attachment (Model EW-14R) (WR12DM)

Use this attachment only when the machine is applied to the nut or bolt at the right angle.

S	Model	dimention B, S
	EW-14R	1/2" (12.7 mm)

B	Fig. 26

26

English

8.9.5 mm adapter: (WR12DM)

Use this adapter when using the socket that has a square-head-drive dimensions of 9.5 mm.

B

S

Fig. 27

Code No.	dimention B	dimention S
317383	3/8" (9.5 mm)	1/2" (12.7 mm)

9. 1/2" (12.7 mm) Square adaptor: (WR9DM)

This is used when using a socket with square hole dimensions of 1/2" (12.7 mm).

B

S

Fig. 28

Code No.	dimention B	dimention S
996145	1/2" (12.7 mm)	3/8" (9.5 mm)

10.Bit adaptor: (WR12DM, WR9DM)

This is used for tightening small screws (M6).

NOTE

This adaptor is set only on the anvil (drive angle) of the main unit.

			Code No.	dimention S	Model
	S
			991476	1/2" (12.7 mm)	WR12DM
			996144	3/8" (9.5 mm)	WR9DM

Fig. 29

27