DeWalt DWMT70773L User manual

If you have questions or comments, contact us.
Pour toute question ou tout commentaire, nous contacter.
Si tiene dudas o comentarios, cont&ctenos.
iNSTRUCTiON MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES
INSTRUCTIVO DE OPERACION, CENTROS DE SERVICIO Y POLIZA
DE GARANTiA. ADVERTENClA: L¢:ASE ESTE INSTRUCTIVO ANTES
DE USAR EL PRODUCTO.
®
DWMT70773L
1/2" Impact Wrench Heavy Duty
Cle a chocs de 12,7 mm (1/2 po) service intensif
Llave de impacto de 12,7 mm (1/2") para servicio pesado

DWMTTO773L
1/2" iMPACT WRENCH HEAVY DUTY
A. 1/2" Square Drive
B. Trigger
C. Forward/Reverse Switch
D. Ergonomic Handle
E. 1/4" Air Inlet
R Shock Resistant Housing
Bumpers
G. Composite Body
H. Twin Hammer Mechanism
I. Exhaust
J. Adjustable Power Dial
SPECIFiCATiONS
MODEL
i SQUARE DRIVE
CLUTCH TYPE
MAXIMUM TORQUE (REVERSE)
FREE SPEED (@90PSI)
BLOWS PER MINUTE
NET WEIGHT
EXHAUST TYPE
AVERAGE AiR CONSUMPTION
FREE SPEED
AVERAGE AiR CONSUMPTION AT
LOAD
AIR INTLET SIZE
RECOMMENDED HOSE SIZE
MAX. AIR PRESSURE
DWMT70773L
1/2"
Twin Hammer
650 Ft.Lbs (880 Nm)
7500 RPM
1100 BPM
4.63 LBS (2.1Kg.)
Handle
41.5SCFM (19.6 L/s)
5.9 CFM (2.8 L!s)
27.2SCFM (12.8 L/s)
3.9 CFM (1.8 L/s)
1/4" NPT(F)
3/8" (10MM)
9O PSI
FIG.1
C

Definitions: Safety Guidelines
The definitions below describe the levelof severity
for each signal word. Please read the manual and pay
attention to these symbols.
_DANGER: Indicates an imminently hazardous
situation which, if not avoided, will result in death
or serious injury.
_, WARNING: Indicates a potentially hazardous
situation which, if not avoided, could result in death
or serious injury.
CAUTION: Indicates a potentially hazardous
situation which, if not avoided, may result in minor
or moderate injury.
CAUTION: Used without the safety alert symbol
indicates a potentially hazardous situation which,
if not avoided, may result in property damage.
IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT
THIS OR ANY DEWALT TOOL, CALL US TOLL FREE AT:
I=800=4=DEWALT (1=800=433=9258)
IMPORTANT SAFETY INSTRUCTIONS
_k WARNING: Some dust created by.power sanding, sawing,
grinding, drilling, and other construcli6n activities contains chemicals
known to the State of California to cause cancer, birth defects or
other reproductive harm. Some example of these chemicals are:
* Lead from lead-based paints
* Crystalline silica from bricks and cement
and other masonry products
* Arsenic and chromium from chemically-treated lumber
Yourrisk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
work in a weft ventilated area, and work with approved safety
equipment, always wear OSNA/MSNA/NIOSH approved,
properly fitting face mask or respirator when using such tools.
When using air tools, basic safety precautions should always be
followed to reduce the risk of personal injury.
,& WARNING: This product contains chemicals, known to the
State of Cafifornia to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
SAVE THESE INSTRUCTIONS
AWARNING:
Improper operation or maintenance of this product
could result in serious injury and property damage.
Read and understand aft warnings and operating
instructions before using this equipment. When using
air tools, basicsafety precautions should always be
followed to reduce the risk of personal injury.
AWARNING:
(_ Read and understand this instruction manual and tool labels
before installing, operating or servicing this tool. Keep these
instructions in a safe accessible place.
_Operators and others in work wear ANSI Z87. CAN/
area must I
CSA Z94.3 approved safety glasses with side shields.
Operators and others in work area must wear ear protection.
,_ Oil daily for optimal performance.

AWARNING:
* Avoidprolonged use: repetitive motion or exposure to vibration
may be harmful to your hands or arms. Use gloves toprovide
extra cushion, take frequent rest periods, and limit daily
time of use.
* DO NOT Use oxygen or reactive gases; explosion may occur.
* DO NOT Exceed air pressure of 90 PSL
,Read all manuals included with this product carefully.
Be thoroughly familiar with the controls and the proper use
of the equipment.
,Only persons well acquainted with these rules of safe operation
should be allowed to use the air tool
* DO NOT exceed any pressure rating of any component
in the system.
* Disconnect the air tool from air supply before changing tools or
attachments and during non-operation.
,Always wear safety glasses and ear protection during operation.
Always wear approved safety glasses with shields. Always wear
approved hearing protection.
* DO NOT wear loose fitting clothing or apparel which contains
loose straps or ties, etc. Which could become entangled in
moving parts of the tool and results in serious personal injury.
,DO NOT wear jewel_ watches, identifications, bracelets,
necklace, etc. When operating any tool, they may become
caught in moving parts and result in serious injury.
* DO NOT depress trigger when connecting the air supply hose.
* Always use attachments designed for use with air
powered impact tools.
* DO NOT use damaged or worn attachments.
_, WARNING:
DO NOT use hand tool sockets. Use impact quafity sockets only.
AWARNING:
•Never trigger the tool when not applied to a work object
Attachments must be securely attached.
Loose attachments can cause serious injury.
•Protect air lines from damage or puncture.
•Never point an air tool at oneseff or any other person.
Serious injury could occur.
•Check air hoses for weak or worn condition before each use.
Make sure all connections are secure.
•Keep all nuts, bolts and screws tight and ensure equipment is in
safe working condition.
•DO NOTput hands near or under moving parts.

_WARNING: RISK OF EXPLOSION OR FIRE
WHAT CAN HAPPEN
• Abrasive tools such as
sanders and grinders,
rotating tools such as drills,
and impact tools such as
wrenches, hammers,
and reciprocating saws
are capable of generating
sparks which could
result in ignition of
flammable materials.
• Exceeding the maximum
pressure rating of tools
accessories could cause
an explosion resulting
in serious injury.
HOWTO PREVENT IT
• Never operate tools near
flammable substances such
as gasoline, naptha,
cleaning solvents, etc.
• Work in a clean, well
ventilated area free of
combustible materials.
Never use oxygen,
carbon dioxide or other
bottled gases as a power
source for air tools.
Use compressed air regulated
to a maximum pressure at or
below the rated pressure
of any attachments.
WARNING: RiSK TO BREATHING (ASPHYXIATION)
WHAT CAN HAPPEN HOW TO PREVENT IT
• Abrasive tools, such as
grinders, sanders, and
cut-off tools generate dust
and abrasive materials which
can be harmful to human
lungs and respiratory system.
Some materials such as
adhesives and tar contain
chemicals whose vapors
could cause serious injury
with prolonged exposure.
• Always wear MSHA/NIOSH
approved, properly fitting face
mask or respirator when
using such tools.
• Always work in a clean, dry,
well ventilated area.
CAUTION: RISK FROM NOISE
WHAT CAN HAPPEN HOWTO PREVENT IT
Long term exposure to noise
produced from the operation
of air tools can lead to
permanent hearing loss.
• Always wear ANSI (S3.19)
hearing protection.

AWARNING: RISK OF INJURY
WHAT CAN HAPPEN
• Tools left unattended, or with
the air hose attached can be
activated by unauthorized
persons leading to their injury
or injury to others.
• Air tools can propel loose
objects or other materials
throughout the work area.
• Air tools can become
activated by accident during
maintenance or tool changes.
HOWTO PREVENT IT
• Remove air hose when tool
is not in use and store tool
in asecure location away
from reach of children and/or
untrained users.
Use only parts, fasteners, and
accessories recommended by
the manufacturer.
Keep work area clean and free
of clutter. Keep children and
others away from work area
during operation of the tool.
Keep work area well lit.
Remove air hose to lubricate,
add, or replace sockets.
Never carry the tool
bythe hose.
• Avoid unintentional startin.q.
Don't carry, hooked-up too[ with
finger on trigger.
• Repair service should be done
only by an authorized service
representative.
• A wrench or a key that is left
attached to a rotating part of
the tool increases the risk of
personal injury.
Remove adjusting keys and
wrench before turning
the tool on.
WHAT CAN HAPPEN
• Using inflator nozzles for
duster applications can cause
serious injury.
• Air tools can cause the work
piece to move upon contact
leading to injury.
• Loss of control of the tool can
lead to injury to self or others
Poor quality, improper, or
damaged tools such as
grinding wheels, chisels,
sockets, drill, etc., can fly
apart during operation,
propelling particles
throughout the work area
causing serious injury.
HOWTO PREVENT IT
• DO NOT use inflator nozzles
for duster applications.
• Use clamps or other devices
to prevent movement.
o
o
o
t
o
Never operate tool while
under the influence of
drugs or alcohol.
Don't overreach. Keep proper
footing and balance at all times.
Keep handles dry, clean, and
free from oil and grease.
Stay alert. Watch what you are
doing. Use common sense.
Do not operate tool when
you are tired.
Always use tool attachments
rated for the speed of
the power tool.
Never use tools which have
been dropped, impacted or
damaged by use.
Use only impact grade sockets
on an impact wrench.
Do not apply excessive force
to the tool - let the tool
perform the work.

$_WARNING: RiSK OF INJURY (CONTINUED)
WHAT CAN HAPPEN HOWTO PREVENT iT
•Improperly maintained tool
and accessories can
cause serious injury.
•There is a risk of bursting if
the tool isdamaged.
Fasteners could ricochet or
be propelled causing serious
injury or property damage.
Maintain the tool with care.
• Check for misalignment or
binding of moving parts,
breakage of parts, and any
other condition that affects the
tool's operation. Ifdamaged,
have the tool serviced
before using.
• Never point discharge of tool
atself or others.
• Do not pull trigger unless
tool contact safety device is
against work surface.
• Never attempt to drive
fasteners into hard surfaces
such as steel, concrete, or tile.
• Take care to avoid driving
afastener on top of
another fastener.
• Position tool carefully so that
fasteners will be delivered to
the proper location.
ik WARNING: RISK OF ELETRIC SHOCK
WHAT CAN HAPPEN HOWTO PREVENT IT
• This tool is not provided with
an insulated gripping surface.
Contact with a"live" wire will
also make exposed metal
parts of the tool "live"
and can result in
electrocution or death.
•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.
•Thoroughly investigate the
workpiece for possible hidden
wring before performing work.

WARNING: RiSK FROM FLYING OBJECTS
WHAT CAN HAPPEN HOWTO PREVENT IT
• Air powered equipment and
power tools are capable of
propelling materials such as
metal chips, saw dust, and
other debris at high speed,
which could result in
serious eye injury.
• Always wear ANSI Z87.1
CAN/CSA Z94.3 approved
safety glasses with side
shields.
• Never leave operating tool
unattended. Disconnect air
hose when tool is not in use.
• Compressed air can be
hazardous. The air stream
can cause injury to soft tissue
areas such as eyes, ears, etc.
Particles or objects
propelled by the stream
can cause injury.
• Toolattachments can be
come loose or break and fly
apart propelling particles at
the operator and others
in the work area.
For additional protection use
an approved face shield in
addition to safety glasses.
Make sure that any
attachments are
securely assembled.
AWARNING: RISK OF CUT OR BURNS
WHAT CAN HAPPEN HOWTO PREVENT IT
Tools which cut, shear,
drill, punch, chisel, etc.,
are capable of causing
serious injury.
WARNING:RISK OF
WHATCAN HAPPEN
• Keep the working part
of the tool away from
hands and body.
ENTANGLEMENT
HOWTO PREVENT IT
Tools which contain moving
elements, or drive other
moving tools such as grinding
wheels, sockets, sanding
discs,etc., can become
entangled in hair,clothing,
jewelry and other loose
objects, resulting
in severe injury.
• Never wear loose fitting
clothes, or apparel which
contains loose straps or ties,
etc., which could become
entangled in moving parts
of the tool.
• Remove any jewelry, watches,
identifications, bracelets,
necklaces, etc., which might
become caught by the tool.
• Keep hands away from moving
parts. Tie up or cover long hair.
• Always wear proper fitting
clothing and other safety
equipment when
using this tool.

_'_WARNING: AIR SUPPLY AND CONNECTIONS
* Do not use oxygen, combustible gases, or bottled gases
as a power source for this tool as the tool may explode,
possibly causing injury.
* Do not use supply sources which can potentially exceed
200 PSI (13.8 bar) as tool may burst, possibly causing injury.
* The connector on the tool must not hold pressure
when air supply is disconnected. If a wrong fitting is used,
the tool can remain charged with air after disconnecting
and thus will be able to after the air line is disconnected
possibly causing injury.
* Always disconnect air supply:
1) Before making adjustments;
2) When servicing the tool;
3) When tool is not in use;
4) When moving to a different work area, as accidental
actuation may occur, possibly causing injury.
SAVE THESE INSTRUCTIONS
FOR FUTURE USE

FEATURES
ADJUSTABLE POWER DiAL
The dial (J) controls the torque power.
Torque increases with larger circle
settings.
SQUARE DRIVE
The 1/2" square drive (A) allows
attachment of sockets with a
insulation from cold air passing
through the handle.
TRIGGER
The trigger (B) allows the operator
to control the start and stop of the
air tool.
FORWARD/REVERSE SWITCH
The forward/reverse switch (C)
is easily accessible with one hand
from the left and/or the right side
of the tool for quick directional
changeover.
TWIN HAMMER MECHANISM
This air tool contains a twin hammer mechanism which provides
more durability and a longer tool life.
COMPOSITE BODY
The body of the air tool is a high-impact composite design (G)
for reduced weight and superior power-to-weight ratio.
The composite body reduces fatigue and provides insulation from
cold air passing through the handle.
HANDLE
This air tool has an ergonomic grip (D)
made of molded thermoplastic elastomer
(TPE) design for improved comfort,
slippage reduction, and better
tool control.
AiR INLET
The tool's air inlet (E) located at
the bottom of the handle is used for
connecting an air supply with a standard
1/4" NPT American thread.
EXHAUST
The exhaust (I) is located at the base of
the handle and allows the exhaust to be
directed away from the operator and work-
ing area.
SHOCK RESISTANT HOUSING
BUMPERS
The shock resistant housing
bumpers (F) provide protection against housing cracks from
accidental drops of the air tool.
lO