Kobalt KHD 524B-03 User manual

1
AB16876
Questions, problems, missing parts? Before returning to your retailer, call our customer
service department at 1-888-3KOBALT (1-888-356-2258), 8 a.m. - 8 p.m., EST,
Monday - Friday.
ATTACH YOUR RECEIPT HERE
Serial Number Purchase Date
ITEM #0790020/
0790021/0790022
1/2 INCH
BRUSHLESS
HAMMER
DRILL
MODEL #KHD 524B-03
Français p. 19

2
TABLE OF CONTENTS
Product Specications .....................................................................................................2
Package Contents ...........................................................................................................3
Safety Information ...........................................................................................................4
Preparation......................................................................................................................7
Operating Instructions .....................................................................................................8
Care and Maintenance ..................................................................................................16
Troubleshooting.............................................................................................................16
Warranty ........................................................................................................................17
PRODUCT SPECIFICATIONS
COMPONENT SPECIFICATION
Rated voltage 24 V d.c.
No-load speed 0-550/0-2,000 RPM
Chuck capacity 1/2 in.
Maximum torque 650 in. lbs.

3
PACKAGE CONTENTS
A
B
E
G
H
C
D I
J
K
L
F
PART DESCRIPTION PART DESCRIPTION
A Keyless chuck G LED work light
B Adjustable torque clutch H Auxiliary handle
C Gear selector I Belt clip
D Mode selector J Bit holder
E Variable-speed trigger switch K Screws (2)
FDirection-of-rotation selector
(forward/center-lock/reverse) L Double-end bit
WARNING
• Remove the tool from the package and examine it carefully. Do not discard the carton or any
packaging material until all parts have been examined.
• If any part of the tool is missing or damaged, do not attach the battery pack or use the tool until
the part has been repaired or replaced. Failure to heed this warning could result in serious injury.

4
SAFETY INFORMATION
Please read and understand this entire manual before attempting to assemble or operate
this product. If you have any questions regarding the product, please call customer service at
1-888-3KOBALT, 8 a.m. - 8 p.m., EST, Monday - Friday.
WARNING
• The operation of any power tool can result in foreign objects being thrown into your eyes, which
can result in severe eye damage. Before beginning power-tool operation, always wear safety
goggles or safety glasses with side shields and a full-face shield, when needed. We recommend
using a wide vision safety mask over eyeglasses or standard safety glasses with shields. Always
use eye protection marked to comply with ANSI Z87.1.
• Some dust created by power sanding, sawing, grinding, drilling, and other construction activities
contains chemicals known to the state of California to cause cancer, birth defects, or other
reproductive harm. Some examples of these chemicals are:
– Lead from lead-based paints
– Crystalline silica from bricks, cement, and other masonry products
– Arsenic and chromium from chemically-treated lumber
• Your risk from these exposures varies, depending upon how often you do this type of work. To
reduce your exposure to these chemicals:
– Work in a well-ventilated area.
– Work with approved safety equipment, such as dust masks that are specially designed to
lter out microscopic particles.
– Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and
other construction activities. Wear protective clothing and wash exposed areas with soap
and water. Allowing dust to get into your mouth or eyes or to lie on the skin may promote
absorption of harmful chemicals.
Know the Tool
To operate this tool, carefully read this manual and all labels afxed to the tool before using it.
Keep this manual available for future reference.
Important
This tool should be serviced only by a qualied service technician.
Read All Instructions Thoroughly

5
SAFETY INFORMATION
Some of the following symbols may be used on this tool. Please study them and their meaning.
Proper interpretation of these symbols will allow you to operate the tool better and more safely.
SYMBOL DEFINITION SYMBOL DEFINITION
V Volts n0No-load Speed
A Amps /min Revolutions or Strokes per Minute
Hz Hertz Direct Current
W Watts Alternating Current
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, re 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.
Work Area Safety
• Keep work area clean and well lit. Cluttered or dark areas invite accidents.
• Do not operate power tools in explosive atmospheres, such as in the presence of
ammable liquids, gases or dust. Power tools create sparks, which may ignite the dust or fumes.
• Keep children and bystanders away while operating a power tool. Distractions can cause
you to lose control.
Electrical Safety
• Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any
adaptor plugs with earthed (grounded) power tools. Unmodied plugs and matching outlets
will reduce the risk of electric shock.
• 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.
• Do not expose power tools to rain or wet conditions. Water entering a power tool will
increase the risk of electric shock.
• 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.

6
SAFETY INFORMATION
• 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.
• If operating a power tool in a damp location is unavoidable, use a ground-fault circuit
interrupter (GFCI) protected supply. Use of a GFCI reduces the risk of electric shock.
Personal Safety
• 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 inuence of drugs, alcohol
or medication. Amoment of inattention while operating power tools may result in serious
personal injury.
• Use personal protective equipment. Always wear eye protection. Protective equipment
such as dust mask, non-skid safety shoes, hard hat, or hearing protection, used for appropriate
conditions, will reduce personal injuries.
• 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 nger on the switch or energizing power tools that have the switch on invites accidents.
• 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.
• Do not overreach. Keep proper footing and balance at all times. This enables better control
of the power tool in unexpected situations.
• Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
• If devices are provided for the connection of dust extraction and collection facilities,
ensure that these are connected and properly used. Use of these devices can reduce dust-
related hazards.
Power Tool Use and Care
• 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.
• 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.
• 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.
• 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.
• 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.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
• Use the power tool, accessories, 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.

7
SAFETY INFORMATION
Battery Tool Use and Care
• Recharge only with the charger specied by the manufacturer. A charger that is suitable for
one type of battery pack may create a risk of re when used with another battery pack.
• Use power tools only with specically designated battery packs. Use of any other battery
packs may create a risk of injury and re.
• When battery pack is not in use, keep it away from other metal objects like paperclips,
coins, keys, nails, screws or other small metal objects that can make a connection from
one terminal to another. Shorting the battery terminals together may cause burns or a re.
• Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact
accidentally occurs, ush with water. If liquid contacts eyes, additionally seek medical
help. Liquid ejected from the battery may cause irritation or burns.
Service
• Have your power tool serviced by a qualied repair person using only identical
replacement parts. This will ensure that the safety of the power tool is maintained.
Specic Safety Warnings for Hammer Drill
• Wear ear protectors when impact drilling. Exposure to noise can cause hearing loss.
• Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.
• Hold power tools by insulated gripping surfaces when performing an operation where the
cutting accessory may contact hidden wiring. Cutting accessory contacting a “live” wire may
make exposed metal parts of the power tool “live” and could give the operator an electric shock.
• Secure the workpiece. Clamping devices or a vise will hold the workpiece in place better and
more safely than holding it by hand.
• Always wait until the machine has come to a complete stop before placing it down. The tool
insert can jam and lead to loss of control over the power tool.
• When working with the power tool, always hold it rmly with both hands and provide a secure
stance. The power tool is guided more securely with both hands.
PREPARATION
Know Your Hammer Drill
Before attempting to use the hammer drill, familiarize yourself with all of its operating features and
safety requirements. Helpful tool (not included): Phillips screwdriver.
WARNING
• Do not allow familiarity with the hammer drill to cause carelessness. Remember that one
careless moment is enough to cause severe injury. Before attempting to use any tool, be sure to
become familiar with all of the operating features and safety instructions.
• Do not attempt to modify this tool or create accessories not recommended for use with this tool.
Any such alteration or modication is misuse and could result in a hazardous condition leading to
possible serious personal injury.

8
OPERATING INSTRUCTIONS
1. Battery
To Attach Battery Pack
a. Place the direction-of-rotation selector (F) in the
center-lock position.
b. Align the raised portion on the battery pack with
the grooves on the bottom of the tool, and then
slide the battery pack onto the tool as shown.
c. Make sure that the latches on the battery pack
snaps into place and the battery pack is secured
to the tool before beginning operation.
NOTICE: When placing the battery pack on the tool,
be sure that the raised rib on battery pack aligns with
the groove on the tool and the latches snap into place
properly. Improper attachment of the battery pack can
cause damage to internal components.
To Detach Battery Pack
a. Place the direction-of-rotation selector (F) in
the center-lock position.
b. Press the battery-release buttons to release
the battery pack.
c. Pull forward on the battery pack to remove it
from the tool.
WARNING
• Battery tools are always in operating condition.
Therefore, the direction-of-rotation selector
should always be locked (center) when the tool is
not in use or when carrying the tool at your side.
2. Variable-speed Trigger Switch
a. To turn the hammer drill ON, depress the
variable-speed trigger switch (E).
b. To turn it OFF, release the variable-speed
trigger switch.
Variable Speed
The variable-speed trigger switch delivers higher
speed with increased trigger pressure and lower
speed with decreased trigger pressure.
Electric Brake
The hammer drill is equipped with an electric
brake. When the variable-speed trigger switch is
released, the electric brake engages automatically
to quickly stop rotation.
1a
F
F
1b
2
E

9
OPERATING INSTRUCTIONS
3. Two-Speed Gear Box
The hammer drill has a two-speed gear box designed
for drilling or driving at two different variable-speed
ranges. A gear selector (C) is located on the top of the
hammer drill to select either 1 (Low) speed range or 2
(High) speed range.
a. Setting 1 will deliver lower speeds and increased
power and torque. Use setting 1 for heavy-duty
work or driving screws.
b. Setting 2 will deliver higher speeds and reduced
power and torque. Use setting 2 for drilling wood
and wood composites and for using abrasive and
polishing accessories.
NOTICE: Never change gears while the tool is
running. Failure to obey this caution could result in
serious damage to the hammer drill.
4. Direction-of-Rotation Selector
(Forward/Center-Lock/Reverse)
The direction of bit rotation is reversible and is
controlled by a selector located above the variable-
speed trigger switch (E). With the hammer drill held in
the normal operating position, pointing away from you:
a. Position the direction-of-rotation selector (F) to
the left of the tool for forward rotation.
b. Position the direction-of-rotation selector to the
right of the tool for reverse rotation.
c. Setting the selector in the center (lock) position
helps reduce the possibility of accidental starting
when not in use.
NOTICE: To prevent gear damage, always allow the
hammer drill to come to a complete stop before changing the direction of rotation.
NOTICE: The hammer drill will not run unless the direction-of-rotation selector is engaged fully to
the left or right.
4
FORWARD REVERSE
F F
3
C

10
OPERATING INSTRUCTIONS
5. LED Work Light
The LED work light (G), located on the base of
the hammer drill, will illuminate when the variable-
speed trigger switch (E) is depressed. This provides
additional light on the surface of the workpiece for
operation in lower-light areas.
The LED work light will turn off after the variable-
speed trigger switch is released.
a. The LED work light will blink rapidly if the tool
has stopped working in order to protect internal
circuits; please wait for the tool to cool down, at
which point it can be started again.
b. The LED work light will blink slowly to indicate
that the battery charge is very low.
6. Keyless Chuck
The hammer drill has a keyless chuck (A) to tighten
or release drill bits in the chuck jaws. The arrows on
the chuck indicate the direction in which to rotate
the chuck body in order to GRIP (tighten) or OPEN
(release) the chuck jaws on the drill bit.
7. Mode Selector
The mode selector (D) allows the tool to be set for
various drilling and hammer drilling applications.
Rotate the selector up or down, depending on the
application.
Driving mode : For driving screws.
Drilling mode : For drilling action in woods,
metals, plastics or other materials.
Hammer mode : For drilling with hammer action in
concrete, brick or similar hard material.
CAUTION
• Do not change the mode setting when the tool is
running.
6
A
7
D
5
G

11
OPERATING INSTRUCTIONS
8. Adjustable Torque Clutch
The torque clutch can be adjusted to any of 24 torque
settings in the driving mode .
Adjust the torque by rotating the torque clutch (B).
The higher the torque setting, the more force the
hammer drill produces to turn an object.
The proper setting depends on the job and the type of
bit, fastener, and material you will be using. In general,
use greater torque for larger screws. If the torque is too
high, the screws may be damaged or broken.
Torque adjustment is not available for the drilling or
hammer mode.
CAUTION
• Do not change the torque setting when the tool is
running. This can damage the tool and cause loss of
control and possible injury.
9. Installing and Removing the Belt Clip
a. Align the rib of the belt clip (I) with the hole on the
base of the hammer drill.
b. Insert the screw (K) and tighten the screw
securely with a Phillips screwdriver (not included).
c. To remove the belt clip, use a Phillips screwdriver
to loosen the screw holding the belt clip to the
hammer drill.
10. Installing and Removing the Bit Holder
a. Align the rib of the bit holder (J) with the hole on
the base of the hammer drill.
b. Insert the screw (K) and tighten the screw
securely with a Phillips screwdriver (not included).
c. To remove the bit holder, use a Phillips
screwdriver to loosen the screw holding the bit
holder to the hammer drill.
9
I
K
10
J
K
8
B

12
OPERATING INSTRUCTIONS
11. Auxiliary Handle
This hammer drill is equipped with an auxiliary handle (H). For ease of operation, you can use the
handle with either your left or the right hand. The handle can be locked in any of three positions.
To install the auxiliary handle:
a. Place the direction-of-rotation selector (F) in the center-lock position.
b. Loosen the auxiliary handle by turning the handle counterclockwise.
c. Align the raised portion on the auxiliary handle with the grooves on gear box of the hammer
drill, then slide the auxiliary handle onto the tool as shown.
d. Hand-tighten the handle by turning the handle clockwise.
To remove the auxiliary handle:
a. Place the direction-of-rotation selector (F) in the center-lock position.
b. Loosen the auxiliary handle by turning the handle counterclockwise.
c. Remove the auxiliary handle from the tool.
WARNING
• For safety and ease of operation, securely tighten the auxiliary handle by turning the handle
clockwise before every use.
11
F
H

13
OPERATING INSTRUCTIONS
12. Bits
Installing Bits
a. Place the direction-of-rotation selector (F) in the
center-lock position.
b. Open or close the chuck jaws to a point where the
opening is slightly larger than the shank of the bit
you intend to use.
c. Insert the bit.
d. Tighten the chuck jaws securely on the bit.
NOTICE: Rotate the chuck body in the direction of the
arrow marked GRIP to close the chuck jaws. Do not
use a wrench to tighten or loosen the chuck jaws.
WARNING
• Make sure to insert the drill bit straight into the
chuck jaws. Do not insert the drill bit into the chuck
jaws at an angle and then tighten the chuck as
shown in Fig. 12b. This could cause the drill bit
to be thrown from the hammer drill, resulting in
possibly serious personal injury or damage to the
chuck.
Removing Bits
a. Place the direction-of-rotation selector (F) in the
center-lock position.
b. Open the chuck jaws.
c. Remove the drill bit.
WARNING
• Do not hold the chuck body with one hand and use
the power of the hammer drill to tighten or loosen the chuck jaws on the drill bit. The chuck body
could slip in your hand, or your hand could slip and come in contact with the rotating bit. This
could cause an accident resulting in serious personal injury.
12a
12b

14
OPERATING INSTRUCTIONS
13. Drilling
WARNING
• Always wear safety goggles or safety glasses with
side shields during power tool operation or when
blowing dust. If operation is dusty, also wear a dust
mask.
a. Check the direction-of-rotation selector (F) for the
correct setting (forward or reverse).
b. Secure the material to be drilled in a vise or with
clamps to keep it from turning as the drill bit
rotates.
c. Hold the hammer drill rmly and place the bit at
the point to be drilled.
d. Depress the variable-speed trigger switch (E) to
start the hammer drill.
e. Move the drill bit into the workpiece, applying only enough pressure to keep the bit drilling. Do
not force the hammer drill or apply side pressure to elongate a hole. Let the tool do the work.
f. When drilling hard, smooth surfaces, use a center punch to mark the desired location of the
hole. This will prevent the drill bit from slipping off center as the hole is started.
g. If the bit jams in the workpiece or if the hammer drill stalls, stop the tool immediately. Remove
the bit from the workpiece and determine the reason for jamming.
h. To stop the hammer drill, release the variable-speed trigger switch and allow the tool to come
to a complete stop.
Wood Drilling
a. For maximum performance, use high-speed steel or brad-point bits for drilling wood.
b. Set the mode selector (D) to drilling mode for best performance.
c. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
d. Increase speed as the drill bit bites into the material.
e. When drilling “through” holes, place a block of wood behind the workpiece to prevent ragged
or splintered edges on the back side of the hole.
Metal Drilling
a. For maximum performance, use high-speed steel bits for drilling metal or steel.
b. Set the mode selector (D) to drilling mode for best performance.
c. When drilling metals, use light oil on the drill bit to keep it from overheating. The oil will prolong
the life of the bit and increase the drilling action.
d. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
e. Maintain a speed and pressure which will allow cutting without overheating the bit. Applying
too much pressure will:
– Overheat the tool.
– Wear the bearings.
– Bend or burn bits.
– Produce off-center or irregular-shaped holes.
13

15
OPERATING INSTRUCTIONS
Masonry Drilling
a. For maximum performance, use carbide-tipped masonry bits when drilling holes in brick,
concrete, etc.
b. Set the mode selector (D) to hammer mode for best performance.
c. Maintain a speed and pressure which will allow cutting without overheating the bit or the tool.
Applying too much pressure will:
– Overheat the tool.
– Wear the bearings.
– Bend or burn bits.
– Produce off-center or irregular-shaped holes.
d. Apply light pressure and medium speed for best results in brick.
e. Apply additional pressure for hard materials, such as concrete.
f. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
14. Screw Driving
Try to use standard-type screws for easy driving and
improved grip.
a. Install the correct driver bit.
b. Set the mode selector (D) to driving mode for
best performance
c. Ensure that the torque-adjustment ring is set to
the most suitable setting. If in doubt, start with
a low setting and gradually increase the setting
as necessary. Do not change the torque setting
when the tool is running.
d. Use the correct speed range for the job and
initially apply minimal pressure to the variable-
speed trigger switch (E). Increase the speed only
when full control can be maintained.
e. It is advisable to drill a pilot hole rst. This hole should be slightly longer than the screw to
be driven and just smaller than the shank diameter of the screw. The pilot hole will act as a
guide for the screw and will also make tightening the screw less difcult. When screws are
positioned close to an edge of the material, a pilot hole will also help to prevent splitting of the
wood.
f. Use a countersinking bit (sold separately) to accommodate the screw head, so that it does not
protrude from the surface.
g. Keep sufcient pressure on the drill to prevent the bit turning out of the screw head. The screw
head can easily become damaged, making it difcult to drive home or remove.
h. To stop the hammer drill, release the variable-speed trigger switch and allow the tool to come
to a complete stop.
14

16
CARE AND MAINTENANCE
All maintenance should only be carried out by a qualied service technician.
Cleaning
Before cleaning or performing any maintenance, remove the battery pack from the tool. For safe
and proper operation, always keep the tool and its ventilation slots clean.
Always use only a soft, dry cloth to clean your hammer drill. Never use detergent or alcohol.
15. Chuck Removal
The chuck (B) can be removed and replaced.
a. Lock the variable-speed trigger switch (E) by placing
the direction-of-rotation selector (F) in the center
position.
b. Open the chuck jaws.
c. Use a screwdriver to remove the chuck screw by
turning it in a clockwise direction.
d. Insert a 5/16-in. or larger hex key (not included) into
the chuck of the hammer drill and securely tighten
the chuck jaws around the hex key.
e. Tap the hex key sharply with a mallet (not included)
in a counterclockwise direction. This will loosen the
chuck for easy removal.
NOTICE: The chuck screw has left handed threads. Attach a new chuck to the spindle and tighten
the chuck screw.
TROUBLESHOOTING
WARNING
• Set the direction-of-rotation selector (F) to the “center-lock” position and detach the battery pack
from the hammer drill before performing troubleshooting procedures.
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
The hammer drill does
not work. Battery pack is depleted. Charge the battery pack.
Bit cannot be installed.
Chuck is not released. Release the chuck.
Bit does not t the chuck. Use an appropriate bit or use a suitable
adaptor.
Motor overheating. Cooling vents are
obstructed.
Clean and clear vents. Do not cover
vents with hand during operation.
The LED worklight
blinks rapidly.
The tool has stopped
working to protect internal
circuits.
Release the trigger switch, wait for the
tool to cool down, then start the tool
again.
The LED worklight
blinks slowly.
The battery charge is very
low.
Charge the battery.
15
B

17
WARRANTY
For 5 years from the date of purchase, the power tool is warranted and for 3 years from date of
purchase the battery & charger are warranted for the original purchaser to be free from defects
in material and workmanship. This guarantee does not cover damage due to abuse, normal
wear, improper maintenance, neglect, unauthorized repair/alteration, or expendable parts and
accessories expected to become unusable after a reasonable period of use.
If you think your product meets the above guarantee criteria, please return it to the place of
purchase with valid proof of purchase and the defective product will be repaired or replaced at no
charge. This guarantee gives you specic legal rights, and you may also have other rights that
vary from state to state.

18
Printed in China

19
Des questions, des problèmes, des pièces manquantes? Avant de retourner l’article
au détaillant, appelez notre service à la clientèle au 1 888 3KOBALT (1 888 356-2258),
entre 8 h et 20 h (HNE), du lundi au vendredi.
JOIGNEZ VOTRE REÇU ICI
Numéro de série Date d’achat
ARTICLES #0790020/
0790021/0790022
PERCEUSE À
PERCUSSION
SANS BALAI 1/2 PO
MODÈLE #KHD 524B-03

20
TABLE DES MATIÈRES
Caractéristiques du produit............................................................................................20
Contenu de l’emballage.................................................................................................21
Consignes de sécurité...................................................................................................22
Préparation....................................................................................................................26
Mode d’emploi ...............................................................................................................27
Entretien ........................................................................................................................38
Dépannage....................................................................................................................39
Garantie.........................................................................................................................39
CARACTÉRISTIQUES DU PRODUIT
COMPOSANTES CARACTÉRISTIQUES
Tension nominale 24 V c.c.
Vitesse sans charge 0-550/0-2 000 tr/min
Mesure du mandrin 1/2 po
Couple maximal 650 lb-po