Hitachi Koki USA DH 24PM User Manual

Model Rotary Hammer Modèle Marteau rotatif Modelo Martillo perforador

DH 24PM

MODE D’EMPLOI ET INSTRUCTIONS DE SECURITE

AVERTISSEMENT

Une utilisation incorrecte et 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 avant qu’ils utilisent l’outil motorisé.

MANUAL DE INSTRUCCIONES E INSTRUCCIONES DE SEGURIDAD

ADVERTENCIA

¡La utilización inapropiada e insegura de esta herramienta eléctrica puede resultar en lesiones serias o en 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 que utilicen la herramienta eléctrica.

English

IMPORTANT SAFETY INFORMATION

MEANINGS OF SIGNAL WORDS ...... 3

SAFETY ................................................................... 4

GENERAL SAFETY RULES ................. 4

SPECIFIC SAFETY RULES AND SYMBOLS DOUBLE INSULATION FOR SAFER

OPERATION ........................................ 6

FUNCTIONAL DESCRIPTION .............................. 7

NAME OF PARTS ................................ 7

SPECIFICATIONS ................................ 8

CONTENTS

Page

..... 3

..... 5

Page

ASSEMBLY AND OPERATION............................ 8

APPLICATIONS ................................... 8

PRIOR TO OPERATION....................... 8

HOW TO USE .................................... 10

HOW TO USE THE CORE BIT (FOR LIGHT LOAD)

MAINTENANCE AND INSPECTION.................15

ACCESSORIES .....................................................16

STANDARD ACCESSORIES ............. 16

OPTIONAL ACCESSORIES ............... 17

PARTS LIST.......................................................... 60

... 13

Français

INFORMATIONS IMPORTANTES DE SÉCURITÉ SIGNIFICATION DES MOTS

D’AVERTISSEMENT ......................... 21

SECURITE ............................................. 22

REGLES GENERALE DE SECURITE REGLES DE SECURITE SPECIFIQUES ET SYMBOLES DOUBLE ISOLATION POUR UN

FONCTIONNEMENT PLUS SUR

DESCRIPTION FONCTIONNELLE ........ 26

NOM DES PARTIES .......................... 26

SPECIFICATIONS .............................. 26

TABLE DES MATIERES

Page ... 21

....... 22

... 23

........ 25

ASSEMBLAGE ET FONCTIONNEMENT ....

ENTRETIEN ET INSPECTIONN5(...2)TF ETIEN ET INSPECTION

Page

APPLICATIONS ................................. 27

AVANT L’UTILISATION .................... 27

UTILISATION..................................... 29

COMMENT UTILISER LA COURONNE (POUR

UNE CHARGE LEGERE)

.........................

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

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) Double Insulated tools are equipped with

a polarized plug (one blade is wider than the other.) This plug will fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install a polarized outlet. Do not change the plug in any way.

Double Insulation for the three wire grounded power cord and grounded power supply system.

(2) Avoid body contact with grounded

surfaces such as pipes, radiators, ranges and refrigerators. There is an increased

risk of electric shock if your body is grounded.

(3) Do not expose power tools to rain or wet

conditions. Water entering a power tool

will increase the risk of electric shock.

(4) Do not abuse the cord. Never use the

cord to carry the tools or pull the plug from a receptacle. Keep cord away from heat, oil, sharp edges or moving parts. Replace damaged cords immediately.

eliminates the need

Damaged cords increase the risk of electric shock.

(5) When operating a power tool outside,

use an outdoor extension cord marked “W-A” or “W”. These cords are rated for

outdoor use and reduce the risk of electric shock.

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 tires 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 before plugging in. Carrying tools

with your finger on the switch or plugging in tools that have 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 enables 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 the plug form the power

source before making any adjustments, changing accessories, or storing the tool.

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) 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.

(7) Check for misalignment or binding of

moving parts, breakage of parts, and any other condition that may affect the tool's operation. If damaged, have the tool serviced before using. Many accidents

are caused by poorly maintained tools.

(8) 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 with 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.

SPECIFIC SAFETY RULES AND SYMBOLS

1. Hold tools by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact

with a “live” wire will make exposed metal parts of the tool “live” and shock the operator.

2. ALWAYS wear ear protectors when using the tool for extended periods.

Prolonged exposure to high intensity noise can cause hearing loss.

3. NEVER touch the tool bit with bare hands after operation.

4. NEVER wear gloves made from materials likely to roll up such as cotton, wool, cloth or string, etc.

5. ALWAYS attach the side handle and securely grip the Rotary Hammer.

6. NEVER touch moving parts. NEVER place your hands, fingers or

other body parts near the tool’s moving parts.

7. 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.

8. 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.

9. 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.

10. 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,

English

individuals unfamiliar with its operation or unauthorized personnel.

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

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

12. 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.

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

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

14. Keep motor air vent clean.

The tool’s motor air vent must be kept clean so that air can freely flow at all times. Check for dust build-up frequently.

15. Operate power tools at the rated voltage.

Operate the power tool at voltages specified on its nameplate. If using the power tool at a higher voltage than the rated voltage, it will result in abnormally fast motor revolution and may damage the unit and the motor may burn out.

16. 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.

17. NEVER leave tool running unattended. Turn power off.

Don’t leave tool until it comes to a complete stop.

18. Carefully handle power tools.

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

19. 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.

20. ALWAYS wear eye protection that meets the requirement of the latest revision of ANSI Standard Z87.1.

21. ALWAYS be careful with buried object

such as an underground wiring. Touching live wiring or electric cable with this tool may result in electric shock. Confirm before use whether hidden objects are present, such as electric cables within the wall, floor or ceiling.

22. Definitions for symbols used on this tool

V ............ volts

Hz .......... hertz

A ............ amperes

no .......... no load speed

W ........... watt

........... Class II Construction

---/min ... revolutions per minute

.......... Alternating current

DOUBLE INSULATION FOR SAFER OPERATION

To ensure safer operation of this power tool, HITACHI has adopted a double insulation design. “Double insulation” means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator. Therefore, either the symbol

” or the words “Double insulation”

“ appear on the power tool or on the nameplate. Although this system has no external grounding, you must still follow the normal electrical safety precautions given in this Instruction Manual, including not using the power tool in wet environments. To keep the double insulation system effective, follow these precautions: 䡬 Only Hitachi Authorized Service Center

should disassemble or assemble this power tool, and only genuine HITACHI replacement parts should be installed.

English

 Clean the exterior of the power tool only

with a soft cloth moistened with soapy water, and dry thoroughly.

Never use solvents, gasoline or thinners on plastic components; otherwise the plastic may dissolve.

SAVE THESE INSTRUCTIONS

AND

MAKE THEM AVAILABLE TO

OTHER USERS

AND

OWNERS OF THIS TOOL!

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.

NAME OF PARTS

Drill bit

Depth gauge

Front cap

Grip

Lock grip

Side handle

Push button

Change lever

Push button

Fig. 1

Nameplate

Housing

Stopper

Handle

Switch

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SPECIFICATIONS

Motor Single-Phase, Series Commutator Motor Power Source Single-Phase, 120V 60Hz Current 7.0A Capacity Concrete: 1/8" ~ 15/16" (3.4mm ~ 24mm)

Steel: 1/2" (13mm)

Wood: 1-1/4" (32mm) No-Load Speed 0 – 1,150/min. Full-load Impact Rate 0 – 4,600/min. Weight 5.7 lbs (2.6 kg)

ASSEMBLY AND OPERATION

APPLICATIONS

Rotation and hammering function

 Drilling anchor holes  Drilling holes in concrete  Drilling holes in tile

Rotation only function

 Drilling in steel or wood.  Tightening machine screws, wood

screws.

Hammering only function

 Light-duty chiselling of concrete, gro ove digging and edging.

PRIOR TO OPERATION

1. Power source

Ensure that the power source to be utilized conforms to the power source requirements specified on the product nameplate.

2. Power switch

Ensure that the switch is in the OFF position. If the plug is connected to a receptacle while the switch is in the ON position, the power tool will start operating immediately and can cause serious injury.

3. Extension cord

When the work area is far away from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

WARNING:

Damaged cord must be replaced or repaired.

4. Check the receptacle

If the receptacle only loosely accepts the plug, the receptacle must be repaired. Contact a licensed electrician to make appropriate repairs. If such a fautly receptacle is used, it may cause overheating, resulting in a serious hazard.

5. Confirming condition of the environment:

Confirm that the work site is placed under appropriate conditions conforming to prescribed precautions.

6. Mounting the drill bit (Fig. 2)

CAUTION: To prevent accidents, make sure to turn the switch off and disconnect the plug from the receptacle.

NOTE:

When using tools such as bull points, drill bits, etc., make sure to use the genuine

parts designated by our company. (1) Clean the shank portion of the drill bit. (2) Insert the drill bit in a twisting manner

into the tool holder until it latches

itself. (Fig. 2)

(3) Check the latching by pulling on the drill

bit. (4) To remove the drill bit, fully pull the grip

in the direction of the arrow and pull out

the drill bit. (Fig. 3)

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7. Installation of dust cup or dust

collector (B) (Optional accessories)

(Fig. 4, Fig. 5)

When using a rotary hammer for upward

drilling operations attach a dust cup or

dust collector (B) to collect dust or

particles for easy operation.  Installing the dust cup

Use the dust cup by attaching to the drill

bit a shown in Fig. 4.

When using a bit which has big diameter,

enlarge the center hole of the dust cup

with this rotary hammer.

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 Dump particles after every two or three

holes when drilling.  Please replace the drill bit after removing

dust collector (B).

8. Selecting the driver bit

Screw heads or bits will be damaged

unless a bit appropriate for the screw

diameter is employed to drive in the

screws.

9. Confirm the direction of bit rotation

(Fig. 6)

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.

Fig. 6

Push button

10.Replacement of the drill chuck holder

or the drill bit holder

WARNING:

Prevent accidents, make sure to turn the

switch off and disconnect the plug from

the receptacle.

CAUTION: To avoid an injury by accident, before replacing the chuck, remove the tipped tool.

Remove or install the drill chuck or the

drill bit holder in the procedures below.

Turn the lock grip in the arrow direction

shown on the lock grip and pull out the drill chuck holder or the drill bit holder.

(If it is hard to pull out the drill chuck

holder or the drill bit holder, align the change lever with the the lock grip to pull it out.) (Fig. 7)

mark and turn

Lock grip

Fig. 7

(1) Mesh the lock grip with spline. (2) Push in the lock grip, turning it in the

derection shown on the lock grip.

(3) To confirm that the lock grip is securely

instlled, tentatively try to pull out the lock grip (Fig. 8)

HOW TO USE

CAUTION: To prevent accidents, make sure to turn the switch off and disconnect the plug from the receptacle when the drill pits and other various parts are installed or removed. The power switch should also be turned off during a work break and after work.

1. Switch operation

 The rotation speed of the drill bit can be

controlled steplessly by varying the amount that the trigger switch is pulled.

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Speed is low when the trigger switch is pulled slightly and increases as the switch is pulled more. To turn the switch OFF, release the trigger switch to its original position. However, the switch trigger can only be pulled in halfway during reverse and rotates at half the speed of forward operation.

 Pulling the trigger and pushing the

stopper, it keeps the switched-on condition which is convenient for continuous running. When switching off, the stopper can be disconnected by pulling the trigger again. The switch stopper is unusable during reverse.

2. Rotation + Hammering

This rotary hammer can be set to rotation and hammering mode by pressing the push button and turning the change lever

to the installed. (Fig.9 )

(1) Mount the drill bit. (2) Pull the trigger switch after applying the

drill bit tip to the drilling position (Fig. 10)

(3) Pushing the rotary hammer forcibly is not

necessary at all. Pushing slightly so that drill dust comes out gradually is just sufficient.

mark with the drill bit holder

Change lever

Push button

Fig. 9

Fig. 10

CAUTION: When the drill bit touches an iron reinforcing rod, the bit will stop immediately and the rotary hammer will react to revolve. Therefore please grip the side handle and handle tightly as shown in Fig. 10.

3. Rotation only

This rotation hammer can be set to rotation only mode by pressing the push button and turning the change lever to

mark with the drill chuck holder

the installed. (Fig. 11)

Push

Change lever

button

Fig. 11

WARNING:

Prevent accidents, make sure to turn the

switch off and disconnect the plug from the receptacle.

CAUTION: When installing or removing the drillbit, be careful not to hurt hands with the drill bit.

(1) Installation After inserting the drill bit in the drill

chuck holder, hold firmly the ring by hand and tighten the sleeve by turning it clockwise (in the direction of “← GRIP.ZU”)

If loosened in use, tighten strongly the

sleeve. The harder you tighten the sleeve, the stronger the gripping force becomes.

(2) Removal Hold firmly the ring by hand and loosen

the sleeve by turning it counterclockwise in the direction of (“OPEN.AUF →”)

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Sleeve

Ring

Fig. 12

CAUTION:

 Application of force more than

necessary will not only reducing drilling efficiency at all, but will deteriorate the tip edge of the drill bit and reduce the service life of the rotary hammer in addition.

 Drill bit may snap off while withdrawing

the rotary hammer from the drilled hole. For withdrawing, it is important to use a pushing motion.

 Do not attempt to drill anchor holes or

holes in concrete with the main unit in the rotation only function.

 Do not attempt to use the rotary

hammer in the rotation and hammering function with the drill chuck and chuck adaptor attached. This would seriously shorten the service life of every components of the machine.

4. When driving machine screws

In the same manner as the drill bit is installed, install the driter bit to the drill chuck holder.

Apply the driver bit to the groove of

screw head and turn on the switch to tighten the screw.

CAUTION:

 Exercise care not to excessively prolong

driving time, otherwise, the screws may be damaged by excessive force.

 Apply the rotary hammer perpendicularly

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

 Do not attempt to use the rotary

hammer in the rotation and hammering function with drill chuck holder attached.

5. When driving wood screws

(1) Selecting a suitable driver bit

Employ phillips screws, if possible, since the driver bit easily slips off the heads of slotted-head screws.

(2) Driving in wood screws  Prior to driving in wood screws, make

pilot holes suitable for them in the wooden board. Apply the bit to the screw head grooves and gently drive the screws into the holes.

 After rotating the rotary hammer at low

speed for a while until a wood screw in partly driven into the wood, squeeze the trigger more strongly to obtain the optimum driving force.

CAUTION: Exercise care in preparing a pilot hole suitable for the wood screw taking the hardness of the wood into consideration. Should the hole be excessively small or shallow, requiring much power to drive the screw into it, the thread of the wood screw may sometimes be damaged.

6. Hammering only

This rotation hammer can be set to hammering only mode by pressing the push button and turning the change lever to the installed. (Fig. 13)

(1) Mount the bull point or cold chisel. (2) Press the push button and set the change

lever to middle of (Fig. 14)

mark with the drill bit holder

Change lever

Push button

Fig. 13

mark and mark.

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The rotation is released, turn the grip and adjust the cold chisel to desired position. (Fig. 15)

Change lever

Push button

Fig. 14

Grip

Fig. 15

(3) Tu rn the change lever to

mark. (Fig. 13) Then bull point or cold chisel is locked.

CAUTION: When conducting continuously the chiselling work, the heat build-up inside the rotary hammer may cause trouble. When conducting continuously the chiselling work for 15 minutes, rest the rotary hammer for 30 minutes.

7. Using depth gauge (Fig. 16)

(1) Loosen the knob on the side handle, and

insert the depth gauge into the mounting hole on the side handle.

(2) Adjust the depth gauge position

according to the depth of the hole and tighten the knob bolt securely.

Mounting hole

Knob on side handle

Fig. 16

Depth gauge

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

(1) Mount the taper shank adaptor to the

rotary hammer. (Fig. 17)

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

taper shank adaptor. (Fig. 17)

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

prescribed depth.

Drill bit

Taper shank auaptor

Grip

Front cap

Fig. 17

(4) To r emove the drill bit (taper shank),

insert the cotter into the slot of the taper shank adaptor and strike the head of the cotter with a hammer supporting on the rests. (Fig. 18)

Cotter

Taper shank adaptor

Rests

Fig. 18

HOW TO USE THE CORE BIT (FOR LIGHT LOAD)

When boring penetrating large hole use the core bit (for light load). At that time use with the center pin and the core bit shank provided as optional accessories.

1. Mounting

CAUTION: Be sure to turn power OFF and disconnect the plug from the receptacle.

(1) Mount the core bit to the core bit shank.

(Fig. 19)

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Lubricate the thread of the core bit shank to facilitate disassembly.

(2) Mount the core bit shank to the rotary

hammer. (Fig. 20)

Core bit

Thread

Core bit shank

Fig. 19

Fig. 20

(3) Insert the center pin into the guide plate

until it stops.

(4) Engage the guide plate with the core bit,

and turn the guide plate to left or right so that it does not fall even if it faces downward. (Fig. 21)

Guide plate

the core bit tip and start operating.

(3) When boring about 3/16" (5 mm) in depth

the position of the hole will establish. Bore after that removing the center pin and the guide plate from core bit.

(4) Application of excessive force will not

only expedite the work, but will deteriorate the tip edge of the drill bit, resulting in reduced service life of the rotary hammer.

Fig. 22

CAUTION: When removing the center pin and the guide plate, turn OFF the switch and disconnect the plug form the receptacle.

3. Dismounting. (Fig. 23)

Remove the core bit shank from the rotary hammer and strike the head of the core bit shank strongly two or three times with the hammer holding the core bit, then the thread becomes loose and the core bit can be removed.

Center pin

Core bit

Core bit tip

Fig. 21

2. How to bore (Fig. 22)

(1) Connect the plug to the power source. (2) A spring is installed in the center pin.

Push it lightly to the wall or the floor straight. Connect all over the surface of

Core bit shank

Fig. 23

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MAINTENANCE AND INSPECTION

WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle

during maintenance and inspection.

1. Inspecting the drill bits

Since use of a dull tool will cause motor malfunctioning and degraded efficiency, replace the drill bit with a new one or resharpening without delay when abrasion is noted.

2. Inspecting the screws

Regularly inspect all screws and ensure that they are properly tightened. Should any of the screws be loosened, retighten them immediately.

WARNING:

Using this rotary hammer with loosen 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

For your continued safety and electrical shock protection, carbon brush inspection and replacement on this tool should ONLY be performed by a Hitachi Authorized Service Center.

5. How to replace grease

Low viscosity grease is applied to this rotary hammer so that it can be used for a long period without replacing the grease. Please contact the nearest service center for grease replacement when any grease is leaking from loosened screw. Further use of the rotary hammer despite the grease shortage causes seizure to reduce the service life.

CAUTION: A specific grease is used with this machine, therefore, the normal performance of the machine may be

badly affected by use of other grease. Please be sure to let one of our service agents undertake replacement of the grease.

6. 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.

7. 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 may be changed without prior notice.

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) Plastic Case (Code No. 324555) .......................................................................................... 1

(2) Side Handle (Code No. 324548) .......................................................................................... 1

(3) Depth Gauge (Code No. 310331) ........................................................................................ 1

(4) Drill chuck holder (Code No.326271) ................................................................................. 1

OPTIONAL ACCESSORIES (sold separately)

Tool Adapters

 Drilling holes in concrete or tile

Adapter for slender shaft

Drill bit (Slender shaft)

 Drilling holes in concrete or tile

(SDS-plus shank)

Use on jobs facing upwards

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Drill bit

Drilling anchor holes



Drill bit (Taper shank)

 Large hole boring

Rotation + Hammering

Guide plate Center pin Core bit

Anchor setting

Anchor setting adapter

 Bolt placing operation with

Chemical Anchor

Hexagon socket

Demolishing operation

Bull point

(Square type)

Bull point

(Round type)

Groove digging and edging

Hammering only

Cold chisel Cutter

Grooving

Dust cup

Dust collector (B)

Taper shank adapter

Core bit shank

Chemical anchor adapter

Cotter

with drill bit holder

Grooving chisel

Driving screws

, Driver bit - Driver bit

Drilling in steel or wood

Drill bit for steel Drill bit for

Rotation only

wood

with drill chuck holder

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 Drilling holes in concrete or tile

Drill Bit (Slender shaft)

Drill Bit (Slender Shaft)

Outer dia. Effective Length Overall Length Code No. Code No.

1/8" 1-25/32" 3-35/64"

(3.4 mm) (45 mm) (90 mm)

9/64" 1-25/32" 3-35/64"

(3.5 mm) (45 mm) (90 mm)

SDS-plus Drill bit

Outer dia. Overall length Effective length Code No.

5/32" (4.0 mm) 4-5/16" (110 mm) 2" (50 mm) 303571

3/16" (5.0 mm)

7/32" (5.5 mm) 4-5/16" (110 mm) 2" (50 mm) 303576 1/4" (6.5 mm) 6-5/16" (160 mm) 4" (100 mm) 303581 9/32" (7.0 mm) 6-5/16" (160 mm) 4" (100 mm) 303582 5/16" (8.0 mm) 6-5/16" (160 mm) 4" (100 mm) 303584 11/32" (8.5 mm) 6-5/16" (160 mm) 4" (100 mm) 303585 3/8" (9.0 mm) 6-5/16" (160 mm) 4" (100 mm) 303586

15/32" (12.0 mm)

1/2" (12.7 mm) 6-1/2" (166 mm) 4" (100 mm) 303593 9/16" (14.0 mm) 6-1/2" (166 mm) 4" (100 mm) 303595 19/32" (15.0 mm) 6-1/2" (166 mm) 4" (100 mm) 303598

5/8" (16.0 mm)

21/32" (17.0 mm) 6-1/2" (166 mm) 4" (100 mm) 303601 3/4" (19.0 mm) 10-1/4" (260 mm) 7-7/8" (200 mm) 303613 3/4" (20.0 mm) 10" (250 mm) 7-7/8" (200 mm) 303614 7/8" (22.0 mm) 10" (250 mm) 7-7/8" (200 mm) 303615

4-5/16" (110 mm) 2" (250 mm) 303575

6-5/16" (160 mm) 4" (100 mm) 303578

6-1/2" (166 mm) 4" (100 mm) 303591

10-1/4" (260 mm) 7-7/8" (200 mm) 303606

6-1/2" (166 mm) 4" (100 mm) 303599

10-1/4" (260 mm) 7-7/8" (200 mm) 303611

Adaptor for Slender Shaft

306369

306368

306370

Code No.

Dust cup 971787 Dust collector (B) 306885

 Drilling anchor holes

Drill Bit (Taper Shank) Taper Shank Adaptor

External dia. Code No.

7/16"

(11 mm)

1/2"

(12.3 mm)

1/2"

(12.7 mm)

9/16"

(14.3 mm)

9/16"

(14.5 mm)

11/16"

(17.5 mm)

7/8"

(21.5 mm)

944460

944461

993038

944462

944500

944463

944464

Taper mode Code No. Applicable drill bit

Morse taper

(No. 1)

Morse taper

(No. 2)

A-taper 303619

B-taper 303620

Cotter: Code No. 944477

7/16" (11 mm)

1/2" (12.3 mm)

303617

303618 7/8" (21.5 mm)

Drill bit

(Taper shank)

Drill bit

(Taper shank)

Taper shank adaptor formed A-taper or B-taper is provided as an optional accessory, but drill bit for it is not provided.

1/2" (12.7 mm) 9/16" (14.3 mm) 9/16" (14.5 mm)

11/16" (17.5 mm)

 Large hole boring

Center

(A) 982684 1-3/8" (35 mm) 982675

(B) 982685 (B)

Code No. Code No. Code No.

––

Core bit (outer diameter)

1"(25 mm) 982672

1-1/8" (29 mm) 982673

(A) 1-1/4" (32 mm) 982674 (A)

1-1/2" (38 mm) 982676 1-3/4" (45 mm) 982677

2" (50 mm) 982678 (300 mm)

Core bit shank

Overall length

(105 mm)

(300 mm)

(B)

Guide plate

Core bit

(outer diameter)

1-1/4" (32 mm) 1-3/8" (35 mm) 1-1/2" (38 mm)

 Anchor setting

Code No.

982686 982687 982688

Core bit

(outer diameter)

1-3/4" (45 mm)

2" (50 mm)

Code No.

982689 982690

Anchor setting adaptor (for Rotary hammer)

Anchor size

Overall Length

Code No. 302976 302975 303621 302974

W 1/4" W 5/16" W 3/8"

(6.3 mm) (8 mm) (9.5 mm)

10-1/4" 10-1/4" 6-1/4" 10-1/4"

(260 mm) (260 mm) (160 mm) (260 mm)

4-1/8"

12"

English

303625

303626

303627

nchor size

Overall Length

Code No. 302979 302978 303622 302977

W 1/4" W 5/16" W 3/8"

(6.3 mm) (8 mm) (9.5 mm)

10-1/4" 10-1/4" 6-1/4" 10-1/4"

(260 mm) (260 mm) (160 mm) (260 mm)

Anchor setting adaptor (for Manual hammer)

<Outer wedge type with

the female screw>

Anchor size Code No.

W1/4"

(6.3 mm)

W5/16"

(8 mm)

W3/8"

(9.5 mm)

W1/2"

(12.7 mm)

W5/8"

(15.9 mm)

971794

971795

971796

971797

971798

<Inner wedge type with

the headless screw>

Anchor size Code No.

W1/4"

(6.3 mm)

W5/16" (8 mm)

W3/8"

(9.5 mm)

W1/2"

(12.7 mm)

W5/8"

(15.9 mm)

971799

971800

971801

971802

971803

English

 Bolt placing operation with Chemical Anchor.

Chemical Anchor Adapter

Socket square size Code No.

1/2" (12.7 mm) 303044 3/4" (19 mm) 303045

 Demolishing operation

 Groove digging and edging

Bull point

Type Overall length Code No.

Square 10" (250 mm) 316656 Round 10" (250 mm) 303046

 Grooving

Overall length Code No.

Grooving chisel 10" (250 mm) 316659

Overall length Code No.

Cold chlse 10" (250 mm) 316657 Cutter 10" (250 mm) 316658

NOTE:

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

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