Hitachi H 90SE User Manual

MODEL DEMOLITION HAMMER
MODÈLE MARTEAU PIQUEUR
MODELO MARTILLO DE DEMOLICIÓN

H 90SE

INSTRUCTION MANUAL AND SAFETY INSTRUCTIONS

WARNING

Improper and 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 others before they use the power tool.

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 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.

DOUBLE INSULATION
DOUBLE ISOLATION
AISLAMIENTO DOBLE

English

IMPORTANT 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

CONTENTS

Page

ASSEMBLY AND OPERATION ............................... 10

APPLICATIONS ................................................... 10

PRIOR TO OPERATION ....................................... 10

HOW TO USE THE DEMOLITION

HAMMER ...................................................... 12

MAINTENANCE AND INSPECTION ....................... 13

ACCESSORIES ......................................................... 15

STANDARD ACCESSORIES ............................... 15

OPTIONAL ACCESSORIES ................................. 15

PARTS LIST .............................................................. 46

Page

Français

INFORMATIONS IMPORTANTES ............... 17

SIGNIFICATION DES MOTS

D’AVERTISSEMENT .................................... 17

SECURITE ................................................................ 18

REGLES GENERALES DE SECURITE ................. 18

REGLES DE SECURITE SPECIFIQUES ET

SYMBOLES .................................................. 20

DOUBLE ISOLATION POUR UN

FONCTIONNEMENT PLUS SUR ................. 22

DESCRIPTION FONCTIONNELLE ........................... 23

NOM DES PARTIES ..................................... 23

SPECIFICATIONS ......................................... 23

Español

INFORMACIÓN IMPORTANTE ........................... 31

SIGNIFICADO DE LAS PALABRAS DE

SEÑALIZACIÓN ............................................ 31

SEGURIDAD ............................................................. 32

NORMAS GENERALES DE SEGURIDAD ........... 32

NORMAS Y SÍMBOLOS ESPECÍFICOS

DE SEGURIDAD ........................................... 34

AISLAMIENTO DOBLE PARA OFRECER UNA

OPERACIÓN MÁS SEGURA ........................ 36

DESCRIPCIÓN FUNCIONAL .................................... 37

NOMENCLATURA ............................................... 37

ESPECIFICACIONES ............................................ 37

TABLE DES MATIERES

Página

Page

ÍNDICE

ASSEMBLAGE ET FONCTIONNEMENT ................ 24

APPLICATIONS ................................................... 24

AVANT L’UTILISATION ...................................... 24

COMMENT UTILISER LE MARTEAU

PIQUEUR ...................................................... 26

ENTRETIEN ET INSPECTION .................................. 27

ACCESOIRES ........................................................... 29

ACCESSOIRES STANDARD ............................... 29

ACCESSOIRES SUR OPTION ............................. 29

LISTA DE PIÈCES ..................................................... 46

MONTAJE Y OPERACIÓN ...................................... 38

APLICACIONES ................................................... 38

ANTES DE LA OPERACIÓN ................................ 38

FORMA DE USAR EL MARTILLO

DEMOLEDOR ............................................... 40

MANTENIMIENTO E INSPECCIÓN ........................ 41

ACCESORIOS ........................................................... 43

ACCESORIOS ESTÁNDAR ................................. 43

ACCESORIOS OPCIONALES .............................. 43

LISTA DE PIEZAS .................................................... 46

Page

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English

IMPORTANT INFORMATION

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

Most accidents that result from the 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, unless you first confirm that the planned use will be safe for you and others.

MEANINGS OF SIGNAL WORDS

WARNING indicates a potentially hazardous situations which, if ignored, could result in

serious personal injury.

CAUTION indicates a hazardous situations which, if ignored, could result in moderate
personal injury, or could cause machine damage.

NOTE emphasizes essential information.

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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

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accidents.

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 protective glasses. Dust mask, nonskid safety

shoes, hard hat, or ear plugs 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 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 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.

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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. Wear ear plugs 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 power tool’s moving
parts.

4. Never operate without all guards in place.
Never operate this power 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 power tool.

5. Use right power tools.
Don’t force a small power tool or attachment to do the job of a heavy-duty tool.
Don’t use the power 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 power tool according to the instructions provided herein. Do not drop or
throw the power tool. Never allow the power 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 power tool’s housing or handle can lead to electric shock. Such power
tools should not be used until repaired.

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

11. Keep motor air vent clean.
The power 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.

13. Never use the power tool which is defective or operating abnormally.
If the power tool appears to be operating unusually, making strange noises, or otherwise
appears defective, stop using it immediately and arrange for repairs by an authorized
service center.

14. Never leave the power tool running unattended. Turn power off.
Don’t leave the power tool until it comes to a complete stop.

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English

15. Carefully handle power tools.
Should the 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. NEVER touch the accessory, such as a bull point, a cutter, etc., with bare hands often
operation.

18. NEVER wear gloves made of stuff liabel to roll up such as cotton, wool, cloth or string,
etc.

19. ALWAYS attach the side handle and securely grip the Demolition Hammer.

20. ALWAYS wear eye protectors during operation.

21. ALWAYS be careful with buried objict such as an underground wiring.
Touching these active wiring or electric cable with the power tool, you may receive an
electric shock.
Comfirm if there are any buried object such as electric cable within the wall, floor or
ceiling where you are going to operate here after.

22. Definitions for symbols used on the power tool

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

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

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

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

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

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

---/min ... revolutions per minute

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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 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 INS TRUCTIONS

AND

MAKE THEM AVAILABLE TO

OTHER USERS OF

THIS POWER TOOL!

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English

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.

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

NAME OF PARTS

Trigger Switch

Cap Cover

Front Cover

Retainer

Nameplate

Fig. 1

Housing

Side Handle

SPECIFICATIONS

Motor Single-Phase, Series Commutator Motor
Power Source Single-Phase, 120V AC 60Hz
Current 15 A
Full-load Impact Rate 850/min.
Weight 70.5 lbs (32 kg)

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English

ASSEMBLY AND OPERATION

APPLICATIONS

䡬 The demolition hammer should be applied to demolishing concrete, chiseling concrete,

grooving, bar cutting, and driving piles in 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 nameplate of this demolition hammer.

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, this demolition hammer will start operating
immediately and can cause serious injury.

3. Extension cord

When the work area is remote 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 loosely accepts the plug, the receptacle must be repaired. Contact the
nearest authorized service center for repair service.
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 neat, clean conditions conforming to
prescribed precautions.

6. Installing an accessory, such as a bull point, a cutter, etc.,

CAUTION: To prevent accidents, make sure to turn the switch off and disconnect the

plug from the receptacle.

NOTE: When using accessories such as bull points, cutters, etc., make sure to use the

genuine parts designated by our company.

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* It is possible to attach accessories such

as bull points, cutters, etc., with any of the
three types of shank bit shapes shown
below. (Fig. 2)

䡬 Mounting air tool shank and standard

hexagonal shank tools.
(1) Clean, then smear the accessory

shank portion with grease or machine
oil.

(2) Move the retainer to open position A

and seat the accessory, such as a bull
point, a cutter, etc., in the hexagonal
hole in the front cover (See Fig. 3).

(3) Clamp the accessory into place by

bringing the retainer to the clamp
position. To make sure that the
accessory is properly mounted, pull
on the accessory. (Fig. 4)

䡬 Mounting standard hexagonal shanks and

retaining groove shanks without collars.
(1) Clean, then smear the accessory

shank portion with grease or machine
oil.

(2) Move the retainer to position A. Align

the accessory shank portion so that
its recessed portion is under clamp
and seat the accessory such as a bull
point, a cutter, etc., in the hexagonal
hole in the front cover (See Fig. 5).

(3) Clamp the accessory into place by

bringing the retainer to clamp position
B. To make sure that the accessory
is properly mounted, pull on the
accessory. (Fig. 6)

English

Air Tool Shank Bit

Standard Hex. Shank Bit (Combo Type)

Retaining Groove Bit without Collar

Fig. 2

Retainer

Front Cover

A

Tool Shank

Fig. 3

Fig. 4

NOTE: When removing the accessory, such

as a bull point, a cutter, etc., carry out
the above procedures in reverse.

B

Fig. 6

Tool Shank

A

Retainer

Fig. 5

Front Cover

Recessed
Portion

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English

HOW TO USE THE DEMOLITION HAMMER

1. Pull the trigger switch after applying the tip of the bit to the
crushing position.

2. Operate this demolition hammer by utilizing its own weight.
the performance will not be better even if it is pressed or
thrust forcibly against the work surface. Hold this demolition
hammer with a force just sufficient to counteract the reaction.
This demolition hammer is equipped with a spring cushion
on the handle so that chipping vibration is not conveyed to
the operator.
Operate this demolition hammer without forcing the handle
too strongly.

NOTE: Sometimes the power tool does not begin the striking

stroke even when the motor rotates because oil has
become thick.
If the power tool is used at low temperatures or if it is
used after a long idle time, this demolition hammer
should be kept running in for about five minutes in order
to warm it up.

CAUTION: After long time of use, the front cover becomes hot.

Therefore, be careful not to burn your hands.

Fig. 7

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English

MAINTENANCE AND INSPECTION

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

receptacle during maintenance and inspection.

1. Inspecting this demolition hammer

Since use of a dull accessory, such as a bull point, a cutter, etc., will degrade efficiency
and cause possible motor malfunction, sharpen or replace with a new one as soon as
abrasion is noted.

2. Inspecting the mounting screws

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

WARNING: Using this demolition hammer with loosen screws is extremely

dangerous.

3. Inspecting the retainner (Fig. 2 and 3)

The retainer may become loose due to excessive use. Always, pay attention to its proper
functioning to securely hold the accessory shank portion. If any wear and tear is found,
bring this demolition hammer to an authorized service center for maintenance service.

4. Inspecting the carbon brushes (Fig. 8)

The Motor employs carbon brushes which
are consumable parts. When they become
worn to or near the “wear limit”, it results
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 8. In addition, always keep carbon
brushes clean and ensure that they slide
freely within the brush holders.

Wear limit

0.67” (17 mm)

No. of carbon
brush

86

0.28” (7 mm)

Fig. 8

NOTE: Use HITACHI carbon brush No. 86 indicated in Fig. 8.

5. Replacing carbon brushes (Refer to figure for name of parts)

Loosen the screws (Hexagon socket hd. bolt M4 × 10) of the cap covers, then remove
the cap covers. After removing the brush caps, the carbon brushes can be removed.
After replacing the carbon brushes, tighten the brush caps, then mount the cap covers
securely.

6. Grease replacement

This demolition hammer is of fully oil sealed construction to protect against dust
incursion and to prevent lubricant leakage. This demolition hammer 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.

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English

䡬 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 service center.

NOTE:

䡬 The Hitachi Electric Hammer Grease A is of the low viscosity type. When the grease is

consumed, purchase from the authorized service center.

䡬 Do not excessively supply the designated amount of grease. Otherwise, this demolition

hammer should not operate accurately.

7. 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 authorized service center, ONLY.

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English

ACCESSORIES

WARNING: Accessories for this power tool are mentioned in this Instruction Manual.

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) Allen Wrench (for 12 mm bolt) (Code No. 993740).......................................................... 1

(2) Allen Wrench (for 6 mm bolt) (Code No. 944459)............................................................ 1

(3) Allen Wrench (for 4 mm bolt) (Code No. 943277)............................................................ 1

(4) Side Handle (Code No. 305633)......................................................................................... 1

(5) Bolt M6 × 30 (for Side Handle) (Code No. 993496) .......................................................... 4

OPTIONAL ACCESSORIES........ sold separately

䡬 Demolitioning

(1) Bull Point

Overall Length 16-9/64" (410 mm) 20-15/32" (520 mm)
Code No. 996372 985230

䡬 Groove digging and edging

(1) Cold chisel

Overall Length 20-15/32" (520 mm)
Code No. 985231

+

+

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