HiKOKI WR16SE User manual
Model Impact Wrench
Modèle Clé à choc
Modelo Llave de impacto
WR 16SE
INSTRUCTION MANUAL AND SAFETY INSTRUCTIONS
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
English
IMPORTANT SAFETY INFORMATION
MEANINGS OF SIGNAL WORDS .......... 3
SAFETY ................................................... 3
GENERAL POWER TOOL SAFETY WARNINGS
SPECIFIC SAFETY RULES AND SYMBOLS
DOUBLE INSULATION FOR SAFER
OPERATION ..................................... 5
FUNCTIONAL DESCRIPTION ................ 7
NAME OF PARTS ................................ 7
SPECIFICATIONS ................................ 7
CONTENTS
Page
........ 3
..
3
..... 4
Page
ASSEMBLY AND OPERATION .............. 8
APPLICATIONS ................................... 8
PRIOR TO OPERATION ....................... 8
HOW TO USE ...................................... 9
OPERATIONAL CAUTIONS............... 10
MAINTENANCE AND INSPECTION .... 13
ACCESSORIES ...................................... 14
OPTIONAL ACCESSORIES ............... 14
PARTS LIST .......................................... 44
Français
INFORMATIONS IMPORTANTES DE SÉCURITÉ ...
SIGNIFICATION DES MOTS
D’AVERTISSEMENT ......................... 16
SECURITE ............................................. 16
AVERTISSEMENTS DE SÉCURITÉ GÉNÉRAUX
CONCERNANT LES OUTILS ÉLECTRIQUES
REGLES DE SECURITE SPECIFIQUES ET SYMBOLES
DOUBLE ISOLATION POUR UN
FONCTIONNEMENT PLUS SUR
DESCRIPTION FONCTIONNELLE ........ 20
NOM DES PARTIES .......................... 20
Español
INFORMACIÓN IMPORTANTE SOBRE SEGURIDAD ...
SIGNIFICADO DE LAS PALABRAS DE
SEÑALIZACIÓN ................................. 30
SEGURIDAD ......................................... 30
ADVERTENCIAS DE SEGURIDAD GENERAL DE LA
HERRAMIENTA ELÉCTRICA
NORMAS Y SÍMBOLOS ESPECÍFICOS DE SEGURIDAD
AISLAMIENTO DOBLE PARA OFRECER UNA
OPERACIÓN MÁS SEGURA
DESCRIPCIÓN FUNCIONAL ................ 34
NOMENCLATURA ............................. 34
TABLE DES MATIÈRES
Page
16
ASSEMBLAGE ET FONCTIONNEMENT ....
..... 16
... 18
........ 19
ENTRETIEN ET INSPECTION ............... 27
ACCESSOIRES ...................................... 28
LISTA DES PIÈCES ............................... 44
ÍNDICE
Página
30
..................... 32
..... 33
................... 33
ESPECIFICACIONES .......................... 34
MONTAJE Y OPERACIÓN ................... 35
MANTENIMIENTO E INSPECCIÓN ..... 41
ACCESORIOS ....................................... 42
LISTA DE PIEZAS ................................. 44
Page
SPECIFICATIONS .............................. 20
21
APPLICATIONS ................................. 21
AVANT L’UTILISATION .................... 21
UTILISATION ..................................... 22
PRECAUTIONS POUR L’UTILISATION
ACCESSOIRES SUR OPTION ........... 28
APLICACIONES ................................. 35
ANTES DE LA OPERACIÓN .............. 35
COMO SE USA .................................. 36
PRECAUCIONES DURANTE LA OPERACION
ACCESORIOS OPCIONALES ............ 42
... 24
Página
... 38
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.
SAFETY
GENERAL POWER TOOL SAFETY WARNINGS
WARNING:
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated
(cordless) power tool.
1) Work area safety
a) Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b) 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 or fumes.
c) Keep children and bystanders away while
operating a power tool.
Distractions can cause you to lose control.
2) Electrical safety
a) Power tool plugs must match the outlet.
Never modify the plug in any way.
Do not use any adapter plugs with earthed
(grounded) power tools.
Unmodified plugs and matching outlets will
reduce risk of electric shock.
b) Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges and
refrigerators.
There is an increased risk of electric shock if
your body is earthed or grounded.
c) Do not expose power tools to rain or wet
conditions.
Water entering a power tool will increase the
risk of electric shock.
d) Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges
or moving parts.
Damaged or entangled cords increase the risk
of electric shock.
e) When operating a power tool outdoors, use
an extension cord suitable for outdoor use.
Use of a cord suitable for outdoor use reduces
the risk of electric shock.
f) If operating a power tool in a damp location
is unavoidable, use a residual current device
(RCD) protected supply.
3) Personal safety
Use of an RCD reduces the risk of electric shock.
a) Stay alert, watch what you are doing and use
common sense when operating a power tool.
Do not use a power tool while you are tired
or under the influence of drugs, alcohol or
medication.
3
English
A moment of inattention while operating power
tools may result in serious personal injury.
b) Use personal protective equipment. Always
wear eye protection.
Protective equipment such as dust mask, nonskid safety shoes, hard hat, or hearing
protection used for appropriate conditions
will reduce personal injuries.
c) Prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking
up or carrying the tool.
Carrying power tools with your finger on the
switch or energising power tools that have
the switch on invites accidents.
d) Remove any adjusting key or wrench before
turning the power tool on.
A wrench or a key left attached to a rotating part
of the power tool may result in personal injury.
e) Do not overreach. Keep proper footing and
balance at all times.
This enables better control of the power tool
in unexpected situations.
f) Dress properly. Do not wear loose clothing
or jewellery. Keep your hair, clothing and
gloves away from moving parts.
Loose clothes, jewellery or long hair can be
caught in moving parts.
g) If devices are provided for the connection of
dust extraction and collection facilities, ensure
these are connected and properly used.
Use of dust collection can reduce dust-related
hazards.
4) Power tool use and care
a) Do not force the power tool. Use the correct
power tool for your application.
The correct power tool will do the job better
and safer at the rate for which it was designed.
b) Do not use the power tool if the switch does
not turn it on and off.
Any power tool that cannot be controlled with
the switch is dangerous and must be repaired.
c) Disconnect the plug from the power source
and/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools.
Such preventive safety measures reduce the
risk of starting the power tool accidentally.
d) Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool.
Power tools are dangerous in the hands of
untrained users.
e) Maintain power tools. Check for
misalignment or binding of moving parts,
breakage of parts and any other condition
that may affect the power tool’s operation.
If damaged, have the power tool repaired
before use.
Many accidents are caused by poorly
maintained power tools.
f) Keep cutting tools sharp and clean.
Properly maintained cutting tools with sharp
cutting edges are less likely to bind and are
easier to control.
g) Use the power tool, accessories and tool bits
etc. in accordance with these instructions,
taking into account the working conditions
and the work to be performed.
Use of the power tool for operations different
from those intended could result in a
hazardous situation.
5) Service
a) Have your power tool serviced by a qualified
repair person using only identical
replacement parts.
This will ensure that the safety of the power
tool is maintained.
SPECIFIC SAFETY RULES AND SYMBOLS
1. Wear ear protectors.
Exposure to noise can cause hearing
loss.
2. Use auxiliary handles, if supplied with the tool.
Loss of control can cause personal injury.
3. Hold power tools by insulated gripping surfaces,
when performing an operation where the fastener
may contact hidden wiring or its own cord.
Fasteners contacting a “live” wire may make
exposed metal parts of the power tool “live” and
could give the operator an electric shock.
4. NEVER touch the tool bit with bare hands after
operation.
5. NEVER wear gloves made from materials likely to
roll up such as cotton, wool, cloth or string, etc.
6. ALWAYS attach the side handle and securely grip
the Impact Wrench.
7. NEVER touch moving parts.
NEVER place your hands, fingers or other body
parts near the tool’s moving parts.
8. 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.
9. Use right tool.
Don’t force small tool or attachment to do the job
of a heavy-duty tool.
4
English
Don’t use tool for purpose not intended —for
example— don’t use circular saw for cutting tree
limbs or logs.
10. 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.
11. 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.
12. Keep all screws, bolts and covers tightly in place.
Keep all screws, bolts, and plates tightly mounted.
Check their condition periodically.
13. 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.
14. 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.
15. 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.
16. 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.
17. 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.
18. NEVER leave tool running unattended. Turn power
off.
Don’t leave tool until it comes to a complete stop.
19. Carefully handle power tools.
Should a power tool be dropped or struck against
hard materials inadvertently, it may be deformed,
cracked, or damaged.
20. 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.
21. ALWAYS wear eye protection that meets the
22. When working in high places, check there is
nobody below. During operation, take care not to
catch or tighten the cord accidentally.
23. Switch the reversing switch only after the motor
is stopped when it is necessary to change the
direction of the rotation.
24. Use a step up transformer when a long extension
cable is used.
25. Confirm the tightening torque by a torque wrench
before use in order to ascertain the correct
tightening torque to be used.
26. 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 "PRIOR TO OPERATION" on
page 8.
27. Confirm whether the socket has any crack in it.
28. Definitions for symbols used on this tool
V ............... volts
Hz ............. hertz
A ............... amperes
no .............. no load speed
W .............. watt
---/min ...... revolutions per minute
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.
requirement of the latest revision of
ANSI Standard Z87.1.
............ Class II Construction
.............. Alternating current
5
English
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!
6
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
Bumper
Anvil
Switch
Hammer
Case
English
Handle
Hook
High-Low Switch
High-Low Indicator
Lamp
Fig. 1
SPECIFICATIONS
Motor Single-Phase, Series Commutator Motor
Power Source Single-Phase, 120 V AC 60 Hz
Current 3.9 A
No-Load Speed 1,100 1,300 1,400 1,600/min. (4 modes)
Impact rate 1,300 1,500 1,700 1,900/min. (4 modes)
Capacities
Tightening Torque Maximum 270 ft-lbs (360 N.m)
Square Drive 1/2” (12.7 mm)
Weight 5.5 lbs (2.5 kg)
15/32” – 5/8”(M12 – M16) (High tension bolt)
15/32” – 7/8”(M12 – M22) (Ordinary bolt)
7
English
ASSEMBLY AND OPERATION
APPLICATIONS
䡬 Tightening and loosening various kinds of bolts and nuts.
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 faulty 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 socket (Fig.2)
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.
8
Hex. socket
Hole
Fig. 2
Plunger
Anvil
HOW TO USE
1. Operation of switch (Fig.3)
The switch in this machine functions
as a motor switch and rotational direction selector switch. When the switch
is set to R indicated on the handle
cover, the motor rotates clockwise to
tighten the bolt. When the switch is set
to L, the motor rotates counterclockwise to loosen the bolt. When the
switch is released, the motor stops.
CAUTION:
Be sure to turn the switch OFF and wait until the motor completely stops before changing the direction of wrench revolution. Switching while the motor is
rotating will result in burning the motor.
Fig. 3
2. 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 with
the nut, therefore preventing 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.
3. Tightening Mode Switching Function (Fig.4)
Each press of the High-Low Switch cycles through 4 varying levels of tightening.
Depending on the task, use this mode to adjust the tightening strength. (Table 1)
High-Low
Indicator Lamp
Switch
English
High-Low Switch
Low Medium
High
Fig. 4
Maximum
9
English
Table 1 Example of Tightening Mode Switching Function
Low Medium High Maximum
Indicator Lamp
Max Speed
Max Impact
Rate
1,100/min. 1,300/min. 1,400/min. 1,600/min.
1,300/min. 1,500/min. 1,700/min. 1,900/min.
[Light Tasks] [Heavy Tasks]
Including the assembly of Including steel frame assembly
Applications
piping support structures,
scaffolding, racks,
fences and furniture
OPERATIONAL CAUTIONS
1. Confirm the line voltage (Fig. 5)
The available tightening torque is in-
.
ft-lbs (N
fluenced by line voltage. Reduced line
voltage lowers the available tightening
torque.
For example, if you use a 120 V type
wrench on a 110 V line the available
tightening torque will be reduced to 70
to 90%. When extending the power
cord, use an extension cord which is
as short as possible. When the line voltage is low and a long extension cord is
needed a step up transformer should
be used. The relation between the line
voltage and the tightening torque are
shown in the figures.
2. Do not touch the bumper or hammer case during continuous operation
The bumper and hammer case become hot during continuous screw tightening
so be careful not to touch them at that time.
3. Work at a tightening torque suitable for the bolt under impact
The optimum tightening torque for nuts and bolts differs with material and size
of the nuts and bolts. An excessively large tightening torque for a small bolt
may stretch or break the bolt. The tightening torque increases proportionally to
the operating time. Use the correct operating time for the bolt.
m)
295 (400)
221 (300)
148 (200)
74 (100)
Tightening torque
0
0246810
M16 × 55 (F10T)
Rating 120V
110V
Tightening time
Fig. 5
(s)
10
4. Selecting the socket to be matched to the bolt
Be sure to use a socket which is matched to the bolt to be tightened. Using an
improper socket will result not only 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 holes, and replace before further wear has
develops. Matching socket and bolt sizes are shown in Table 3.
The numerical value of a socket designation denotes the side-to-side distance
(S) of its hex. hole.
5. Holding the tool
Hold the Impact Wrench firmly with both hands by the body handle and the side
handle. 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.
6. 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) Line voltage:
The tightening torque decreases when the line voltage becomes low. (See
Fig. 5)
(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. 5)
(3) Diameter of bolt:
The tightening torque differs with the diameter of the bolt as shown in Fig. 5.
Generally a larger diameter bolt has a 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 metal through which the
bolts are to be tightened.
(5) Using optional parts:
The tightening torque is reduced a little when an extension bar, universal joint
or a long socket is 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 3.
English
11
English
7. The protection function
To protect the tool, the protection function will be activated, automatically
shutting down the unit in the event of any problems. Table 2 describes each
situation for which the aforementioned may occur.
Table 2
High-Low Indicator Lamp Indicated Situation
Flashing
Flashing during mode operation
Fast repeated flashes Automatic shutdown initiated by
Flashes on and off with excessive load (*1)
0.1-second intervals
Slow repeated flashes Automatic shutdown initiated due to
Flashes on and off with sensor detection trouble (*2)
1-second intervals
Automatic shutdown initiated due to
the tool’s internal temperature
exceeding the specified
temperature level (*3)
Automatic shutdown initiated due to
approximately 5 minutes of continuous
no-load operation (*4)
*1 Excessive load protection function
For excessive load conditions, the tool will shutdown to prevent damage.
Discontinue the heavy load task and press either of the buttons on the switch
panel to reset the tool.
*2 Control monitoring function
Press either of the buttons on the switch panel to reset the tool.
Continual occurrences of this situation may be the result of damage to the tool.
*3 Increased temperature protection function
Automatic shutdown is activated to prevent damage from high temperatures.
The tool’s internal temperature will increase for tasks involving the use of large
currents of electricity, or when used in high temperature environments.
In such cases, let the tool cool down for 10 to 15-minutes before continuing use.
*4 Continuous operation prevention function
Shutdown will occur in the event of continuous operation while the switch
remains ON.
12
8. Using the hook
(1) Removing the hook.
Remove the screws fixing the hook with
Philips screw driver. (Fig. 6)
English
Screw
Fig. 6
(2) Replacing the hook and tightening the screws.
Install securely the hook in the groove of power tool and tighten the screws to
fix the hook firmly.
Hook
MAINTENANCE AND INSPECTION
WARNING: Be sure to switch power OFF and disconnect the plug from the
receptacle during maintenance and inspection.
1. Inspecting 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. Pay attention to wear of socket holes periodically, and replace
with a new one if needed.
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 impact wrench 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. 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.
5. Service parts list
CAUTION: Repair, modification and inspection of Hitachi Power Tools must be
carried out by a Hitachi Authorized Service Center.
13
English
S
D
B
E
L
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.
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.
OPTIONAL ACCESSORIES...........sold separately
1. Variety of sockets
Although the Hitachi Impact Wrench is
delivered with only one standard
socket, ample sockets are available to
cover impact tightening of various sizes
and types of bolts.
14
Table 3 B = 1/2” (12.7 mm)
Socket
Designation
Hex. Socket
12
13
14
17
19
21
22
23
24
26
27
30
S
14
17
19
21
22
23
24
26
27
30
Ordinary Socket Long Socket
Dimension (mm) Dimension (mm)
D
E
25
24
28
15
28
17
32
20
35
24
36
25
38
25
38
25
42
24
42
34
Code No.
L
873540
40
873536
32
873624
34
873626
36
873627
40
873628
40
873629
40
873630
40
985195
40
985196
50
S
D
E
12
20
34
13
21.5
14
17
19
21
22
32.5
23
24
26
27
30
34
22
34
25
34
28
34
31
34
34
33
34
34
34
38
57
40
57
42
57
L
52
52
52
52
52
52
52
52
52
75
75
75
2. Extension bar : Code No. 873633
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. So it is necessary to operate the tool a little
longer to get the same torque.
English
Code No.
955138
955139
955140
955141
955142
955143
955144
955145
955146
955147
955148
985197
3. Corner attachment (Model EW-14R)
Use this attachment only when the machine is applied to the nut or bolt at a
right angle.
NOTE:
Specifications are subject to change without any obligation on the part of the
HITACHI.
15
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