Hitachi H 45MR User Manual
Model Demolition Hammer
Modèle Marteau piqueur
Modelo Martillo demoledor
H 45MR
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.
DOUBLE INSULATION
DOUBLE ISOLATION
AISLAMIENTO DOBLE
1
English
English
IMPORTANT SAFETY INFORMATION ...... 3
MEANINGS OF SIGNAL WORDS .............. 3
SAFETY ............................................................4
GENERAL SAFETY RULES ......................... 4
SPECIFIC SAFETY RULES AND
SYMBOLS.............................................. 6
DOUBLE INSULATION FOR SAFER
OPERATION .......................................... 8
FUNCTIONAL DESCRIPTION ......................... 9
NAME OF PARTS ........................................ 9
SPECIFICATIONS ........................................ 9
Français
INFORMATIONS IMPORTANTES DE
SÉCURITÉ ............................................ 18
SIGNIFICATION DES MOTS
D’AVERTISSEMENT ........................... 18
SECURITE ......................................................19
REGLES GENERALES DE SECURITE ....... 19
REGLES DE SECURITE SPECIFIQUES
ET SYMBOLES ....................................21
DOUBLE ISOLATION POUR UN
FONCTIONNEMENT PLUS SUR ........ 23
DESCRIPTION FONCTIONNELLE ................ 24
NOM DES PARTIES .................................. 24
SPECIFICATIONS ...................................... 24
TABLE DES MATIERES
CONTENTS
Page
Page
ASSEMBLY .................................................... 10
Page
OPERATION .................................................. 12
APPLICATIONS ......................................... 12
PRIOR TO OPERATION ............................. 12
HOW TO USE THE DEMOLITION
HAMMER ............................................. 13
MAINTENANCE AND INSPECTION ............. 14
ACCESSORIES .............................................. 16
STANDARD ACCESSORIES ..................... 16
OPTIONAL ACCESSORIES ....................... 16
PARTS LIST ................................................... 48
Page
ASSEMBLAGE .............................................. 25
FONCTIONNEMENT ..................................... 27
APPLICATIONS ......................................... 27
AVANT L’UTILISATION ............................ 27
COMMENT UTILISER LE MARTEAU
PIQUEUR ............................................. 28
ENTRETIEN ET INSPECTION ....................... 29
ACCESOIRES ................................................. 31
ACCESSOIRES STANDARD ..................... 31
ACCESSOIRES SUR OPTION ................... 31
LISTE DES PIECES ........................................ 48
Español
Página
INFORMACIÓN IMPORTANTE SOBRE
SEGURIDAD ........................................33
SIGNIFICADO DE LAS PALABRAS DE
SEÑALIZACIÓN................................... 33
SEGURIDAD .................................................. 34
NORMAS GENERALES DE SEGURIDAD
............................................................. 34
NORMAS Y SÍMBOLOS ESPECÍFICOS
DE SEGURIDAD .................................. 36
AISLAMIENTO DOBLE PARA OFRECER
UNA OPERACIÓN MÁS SEGURA ..... 38
DESCRIPCIÓN FUNCIONAL ......................... 39
NOMENCLATURA ..................................... 39
ESPECIFICACIONES .................................. 39
2
ÍNDICE
Página
MONTAJE ..................................................... 40
OPERACIÓN .................................................. 42
APLICACIONES ......................................... 42
ANTES DE LA OPERACIÓN ...................... 42
FORMA DE USAR EL MARTILLO
DEMOLEDOR ...................................... 43
MANTENIMIENTO E INSPECCIÓN ..............44
ACCESORIOS ................................................ 46
ACCESORIOS ESTÁNDAR ....................... 46
ACCESORIOS OPCIONALES .................... 46
LISTA DE PIEZAS .......................................... 48
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 situation which, if ignored, could result in death
or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury, or may cause machine damage.
NOTE emphasizes essential information.
3
English
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 eliminates the need 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) Don’t 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. 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 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 before plugging in. Carrying tools
with your finger on the switch or plugging in tools that have the switch on invites
accidents.
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English
(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.
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 from 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 hand 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 tools 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
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.
5
English
SPECIFIC SAFETY RULES AND SYMBOLS
1. Hold tools by insulated gripping surfaces when performing an operation where the
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 moving parts.
Never place your hands, fingers or other body parts near the tool’s moving parts.
4. 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.
5. 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.
6. 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.
7. 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.
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. 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.
12. 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.
6
English
13. 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.
14. Never leave tool running unattended. Turn power off.
Don’t leave tool until it comes to a complete stop.
15. Carefully handle power tools.
Should a power tool be dropped or struck against hard materials inadvertently, it may
be deformed, cracked, or damaged.
16. 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.
17. ALWAYS wear eye protection that meets the requirement of the latest revision of ANSI
Standard Z87.1.
18. NEVER touch the tool bit with bare hands after operation.
19. NEVER wear gloves made from materials likely to roll up such as cotton, wool, cloth or
string, etc.
20. ALWAYS attach the side handle and securely grip the Demolition Hammer.
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
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English
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 and “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.
䡬 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!
8
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
English
Front Cap
Cylinder Case
Side Handle
Grip (B)
Grip (A)
Housing
Brush Cap
(Under the Tail Cover)
Fig. 1
Nameplate
Stopper
Trigger
Switch
Tail Cover
SPECIFICATIONS
Model H 45MR
Motor Single-Phase, Series Commutator Motor
Power Source Single-Phase, 120 V AC 60 Hz
Current 8.3 A
Full-load Impact Rate 3000/min.
Weight 13.0 lbs (5.9 kg)
9
English
ASSEMBLY
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,
cutters, etc., make sure to use the genuine
parts designated by our company.
1. Installing Tools
(1) Clean the shank portion of the tool.
(2) As shown in Fig. 2, pull grip (A) in the
direction of A, and insert the tool into a
hole of the front cap.
(3) Adjust the groove position while turning
the tool, and furthermore insert it until it
hits the end of the hole.
(4) Return grip (A) to its original position, pull
the tool to make sure it is locked
completely. (Fig. 3)
2. Deciding Working Position of Tool
The tool can be turned every 30 degrees
and can be fixed at the position of 12
steps.
(1) As shown in Fig. 4, the blade angle can
be freely changed if the grip (A) is turned
in the direction of B in a state where grip
(B) is slid in the direction of A.
(2) Release grip (B) and turn the tool, and
make sure that it is locked completely.
3. Removing Tool
As shown in Fig. 2, pull grip (A), and pull
out the tool.
Tool
Shank
A
Grip (A)
A
Front Cap
Fig. 2
Fig. 3
B
Grip (A)
Grip (B)
Fig. 4
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4. Move the side handle
The side handle can be fixed at any
desired position; 360 degrees, and can
also be fixed at any position in the backand-forth direction.
(1) Loosen the handle by turning the grip in
the direction of A as shown in Fig. 5.
(2) Adjust it to a position where vertical (up-
and-down) operation can be facilitated as
illustrated in Fig. 6, Fig. 7, and Fig. 8.
(3) Turn the grip in the direction of B and fix
the handle.
Grip
A
B
Fig. 5 Fig. 6
Fig. 7 Fig. 8
English
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English
OPERATION
APPLICATIONS
䡬 Demolishing concrete, chiseling concrete, grooving, bar cutting, and driving piles.
Application examples:
Installation of piping and wiring, sanitary facility installation, machinery installation,
water supply and drainage work, interior jobs, harbor facilities and other civil engineering
work.
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.
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English
HOW TO USE THE DEMOLITION HAMMER
1. After placing the tip of the tool on concrete surface, switch
ON.
The switch can be turned ON if the trigger is pulled and OFF
when it is released.
If the stopper is pressed while the trigger for the switch is
pulled, even if your finger is released from the trigger, the
switch remains ON - convenient for continuous operation.
To turn the switch OFF, pull the trigger again, and then the
stopper comes off.
2. By utilizing the empty weight of the machine and by firmly
holding the hammer by both hands, you can effectively
control the subsequent recoil motion.
Proceed at a moderate work-rate, the use of too much
pushing force will impair efficiency.
3. Even when the switch is on, the motor is running and the tool head is pressed to the
demolition surface, the hammer sometimes does not start operating. In these instances,
turn the switch off, press the tool head against the demolition surface again, and turn
the switch on and off. This should start the hammer operating. Repeat this procedure
for several minutes, and the hammer will heat, after which it will operate when switched
to ON-LOCK.
CAUTION: After long time of use, the cylinder case becomes hot.
Therefore, be careful not to burn your hands.
Fig. 9
13
English
73
MAINTENANCE AND INSPECTION
WARNING: Be sure to switch power OFF and disconnect the plug from the
receptacle during maintenance and inspection.
1. Inspecting the tool
Since use of a dull tool will degrade efficiency and cause possible motor malfunction,
sharpen or replace the tool as soon as 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 demolition hammer with loosened screws is extremely
dangerous.
3. Inspecting the carbon brushes (Fig. 10)
The Motor employs carbon brushes which
are consumable parts. When they become
worn to or near the “wear limit”, it could
result in motor trouble. When an auto-stop
carbon brush is equipped, the motor will
stop automatically. At that time, replace
both carbon brushes with new ones which
have the same carbon brush Numbers
shown in the figure. In addition, always
keep carbon brushes clean and ensure
that they slide freely within the brush
holders.
NOTE: Use HITACHI carbon brush No. 73 indicated in Fig. 10.
Wear limit
0.67" (17 mm)
No. of carbon
brush
0.28" (7 mm)
Fig. 10
4. Replacing carbon brushes (Refer to figure for name of parts)
Loosen the set screw then remove the tail cover. By loosening the brush caps, the
carbon brushes can be removed. After fitting new carbon brushes, properly retighten
the brush caps and mount the tail cover.
5. Grease replacement
This machine is of fully oil sealed construction to protect against dust incursion and to
prevent lubricant leakage. This machine can be used without grease replenishment for
an extended period of time. However, perform the grease replacement to extend the
service life. Replace the grease as described below.
(1) Grease Replacement Period
Inspect the grease amount according to the timing replacement period of the carbon
brush. (See item 3 in the section MAINTENANCE AND INSPECTION.)
Ask for grease replacement at the nearest authorized Hitachi Service Center.
In the case that you are forced to change the grease by yourself, please follow the
following points.
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English
(2) How to replace grease
CAUTION:
䡬 Before replacing the grease, turn the power off and pull out the plug from the receptacle.
1 Disassenble the crank cover and thorougly
wipe off the old grease inside.
2 Supply 1.3 oz (40 g) (the standard volume
to cover the connecting rod) of Hitachi
Electric Hammer Grease A in the crank
case.
3 After replacing the grease, reassemples
the crank cover securely. At this time, do
not damage or lose the oil seal.
NOTE:
䡬 The Hitachi Electric Hammer Grease A is of the low viscosity type. When the grease is
consumed, purchase from the authorized Hitachi Service Center.
䡬 Do not excessively supply the designated amount of grease. Otherwise, the tool should
not operate accurately.
Crank Cover
Fig. 11
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
A: Item No.
B: Code No.
C: No. Used
D: Remarks
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.
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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) Bull Point (SDS max shank) (Code No. 313471)............................................................... 1
(2) Case (Code No. 320842) ..................................................................................................... 1
(3) Side Handle (Code No. 317103)......................................................................................... 1
(4) Allen Wrench (for 6 mm screw) (Code No. 944459) ........................................................ 1
(5) Allen Wrench (for 5 mm screw) (Code No. 944458) ........................................................ 1
OPTIONAL ACCESSORIES........ sold separately
䡬 Demolitioning
(1) Bull Point (SDS max shank type)
Overall Length 11-1/32" (280 mm) 15-3/4" (400 mm)
Code No. 313471 313472
䡬 Groove digging and edging
(1) Cold chisel (SDS max shank type)
Overall Length 11-1/32" (280 mm) 15-3/4" (400 mm)
Code No. 313473 313474
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