Item #1000 485 626
Model #WP-403K
THANK YOU
We appreciate the trust and confidence you have placed in HDX through the purchase of this impact hammer.
We strive to continually create quality products designed to enhance your home. Visit us online to see our full line of products available for your home
improvement needs. Thank you for choosing HDX!
USE AND CARE GUIDE
IMPACT HAMMER
Questions, problems, missing parts? Before returning to the store,
call HDX Customer Service
8 a.m. - 6 p.m., EST, Monday-Friday
1-800-514-6729
HOMEDEPOT.COM
2
Table of Contents
Table of Contents .......................................................... 2
Safety Information ......................................................... 2
Warranty ......................................................................... 3
Pre-Operation ................................................................ 4
Specifications ..........................................................................4
Recommended Setup for Pneumatic Tools ..............................4
Package Contents ....................................................................5
Operation ....................................................................... 6
Care and Cleaning ........................................................ 7
Service Parts ................................................................. 7
Safety Information
To prevent serious injury, read and understand all warnings and
instructions before use.
SAVE THIS MANUAL
You will need this manual for the safety warnings and
precautions, operating instructions, maintenance and cleaning
procedures, and parts list. Keep your invoice with this manual.
Write the invoice number on the inside of the front cover. Keep
this manual and invoice in a safe and dry place for future
reference.
WARNING: When using this tool, basic safety precautions
should always be followed to reduce the risk of personal
injury and damage of equipment. Read all instructions
before using this tool.
□ Keep the work area clean. Cluttered areas invite injuries.
□ Store idle equipment. When not in use, tools must be stored
in a dry location to inhibit rust. Always lock up tools and
keep them out of reach of children.
□ Use the right tool for the job. Do not attempt to force a small
tool or attachment to do the work of a larger industrial tool.
There are certain applications for which this tool was
designed. It will do the job better and more safely at the rate
for which it was intended. Do not modify this tool and do not
use this tool for a purpose for which it was not intended.
□ 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.
□ Do not overreach. Keep proper footing and balance at all
times. Proper footing and balance enables better control.
□ Use safety equipment. Always wear ANSI-approved safety
glasses underneath a full face shield and hearing protection.
□ When servicing, use only identical replacement parts. Use of
any other parts will void the warranty. Only use accessories
intended for use with this tool. Approved accessories are
available from the nearest retail stores.
□ When connecting to the air supply, if an automatic oiler is
not used, add two drops of air tool oil (not included) into the
air inlet fitting of the impact hammer.
□ Industrial applications must follow OSHA requirements.
WARNING: Do not operate pneumatic tools in explosive
atmospheres, such as in the presence of flammable liquids,
gases, or dust. Pneumatic tools create sparks which may
ignite flammables.
WARNING: Keep children away. Children must never be
allowed in the work area. Do not let them handle machines,
tools, extension cords, or air hoses.
WARNING: Stay alert. Watch what you are doing and use
common sense when operating a pneumatic tool. Do not
use a pneumatic tool while tired or under the influence of
drugs, alcohol, or medication. Doing so many result in
serious personal injury.
WARNING: Do not operate the tool if under the influence
of alcohol or drugs. Read warning labels if taking
prescription medicine to determine if your judgment or
reflexes are impaired while taking drugs. If there is any
doubt, do not operate the impact hammer.
WARNING: If an extension cord is required, it must be of
the proper size and type to supply the correct current to the
compressor without heating up. Otherwise, the extension
cord could melt and catch fire, or cause electrical damage
to the compressor. Check your air compressor’s manual for
the appropriate size cord.
WARNING: Use clean, dry, regulated compressed air at
90 PSI. Never use oxygen, carbon dioxide, combustible
gases, or any other bottled gas as a power source for this
tool.
WARNING: Some dust created by power sanding,
sawing, grinding, drilling, and other construction activities
contain 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 and cement or other
masonry products, arsenic and chromium from chemically
treated lumber. Your risk from these exposures varies,
depending on how often you do this type of work. To reduce
your exposure to these chemicals work in a well-ventilated
area and work with approved safety equipment, such as
those dust masks that are specifically designed to filter out
microscopic particles (California Health & Safety Code
25249.5, et seq.).
3 HOMEDEPOT.COM
Please contact 1-800-514-6729 for further assistance.
Safety Information (continued)
CAUTION: Remove adjusting keys or wrenches before
turning on the tool. A wrench or a key that is left attached to
a rotating part of the tool may result in personal injury.
CAUTION: Avoid accidental starting. Be sure the trigger
lever is off before connecting to the air supply. Carrying
pneumatic tools with your finger on the trigger, or
connecting pneumatic tools to the air supply with the
trigger on can cause accidents.
CAUTION: For your safety, maintenance should be
performed regularly by a qualified technician.
CAUTION: Always disconnect the impact hammer from
its compressed air supply source and squeeze the trigger
lever to release all compressed air in the tool before
performing any maintenance or services.
Warranty
1 YEAR LIMITED WARRANTY
WHAT IS COVERED
If within one year from the date of purchase, this HDX air tool product fails due to a defect in materials or workmanship, immediately
contact the Customer Service Team at 1-800-514-6729. Do not return the air tool to the store. Please be prepared to send the product,
postage prepaid, to the address provided by the Customer Service Team. The package must also include a copy of the dated first owner
purchase receipt with the air tool model included and circled. The month/year of manufacture of the air tool must also be included to
determine warranty. A defective product will be promptly replaced with a new one of equal or greater value. This warranty gives you
specific rights, and you may also have other rights, which vary from state to state.
WHAT IS NOT COVERED
This warranty excludes incidental/consequential damages and failures due to misuse, abuse, or normal wear and tear. To the extent
permitted by applicable law, all implied warranties, including warranties of merchantability or fitness for a particular purpose, are
disclaimed. Any implied warranties, including warranties or merchantability or fitness for a particular purpose, that cannot be disclaimed
under state law are limited to one year from the date of purchase. HDX is not responsible for direct, indirect, incidental, special, or
consequential damages. Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or
limitation of incidental or consequential damages, so the above limitations may not apply to you.
Contact the Customer Service Team at 1-800-514-6729 or visit www.HomeDepot.com.
4
Pre-Operation
SPECIFICATIONS
Maximum Air Pressure 90 PSI
Air Inlet 1/4 in. -18 NP
T
Impact Rate 4500 BPM
Average Air Consumption 4 CFM @ 90 PSI
Arbor/Chuck Capacity 10 mm standard
RECOMMENDED SETUP FOR PNEUMATIC TOOLS
NOTE: When connecting to the air supply: Prior to each use,
if an automatic oiler is not used, add two drops of air tool oil
(not included) into the air inlet fitting of the impact hammer.
An oiler, regulator, and inline filter should be incorporated into
the air system for best results.
For best service, incorporate an oiler, regulator, and inline filter as this diagram shows:
NOTE: Performance of the compressor (if powered by
line voltage) may vary depending on variations in local
line voltage. Extension cord usage may also affect tool
performance.
Air Compressor
Air Valve
Air Tool
Filter
Regulator
Oiler
5 HOMEDEPOT.COM
Please contact 1-800-514-6729 for further assistance.
Pre-Operation (continued)
PACKAGE CONTENTS
Part Description Quantity
A
Impact hamme
r
1
B Flat chisel 1
C Pointed chisel 1
D Air inlet fitting 1
E Spring retaine
r
1
A
B
C
D
E
O
p
1
□
□
□
□
p
erati
o
Prepa
r
□
Attach eith
e
hammer (A
)
□
Connect th
e
hammer (A
)
□
Attach the
t
bottom of t
□
Adjust the
a
hammer h
a
D
o
n
r
ing the i
m
e
r the flat (B) o
r
)
.
e
spring retain
e
)
and the end o
t
hreaded end o
f
h
e impact ham
a
ir inlet fitting
(
a
ndle as neede
d
A
m
pact h
a
r
pointed chise
l
e
r (E) to the tip
o
f
the installed
c
f
the air inlet fi
t
mer (A) handle
.
(
D) on the botto
d
.
C
a
mmer
l
(C) to the imp
a
o
f the impact
c
hisel (B or C).
t
ting (D) to the
.
m of the impac
E
6
2
a
ct
t
□
□
□
□
□
Using th
CAUTION:
T
failure, do no
t
rating.
NOTE: The t
o
against the w
Hold the impa
c
tip of the chis
e
Squeeze the t
r
Release the tr
If the impact
h
the task, verif
y
unobstructed
a
output of the
r
rating for this
If the impact
h
at maximum
p
hammer may
b
CAUTION:
T
hammer, det
a
air pressure i
n
turn the swit
c
e impact
To prevent injur
y
t
exceed the tool
’
ool will not oper
a
ork piece.
ct hammer (A)
w
e
l (B or C) on t
h
r
igger (1) to st
a
igger (1) to sto
p
h
ammer (A) req
y
that the ham
m
a
irflow (CFM)
a
r
egulator up to
t
impact hamm
e
h
ammer (A) stil
l
p
ressure and s
u
be required.
To prevent accid
a
ch the air suppl
y
n
the hammer, a
n
c
h to the off posi
t
C
hamme
r
y
from the tool or
’s maximum air
p
a
te unless the ch
w
ith both hand
h
e work piece.
a
rt the tool.
p
the tool.
uires more for
c
m
er is receivin
g
a
nd increase th
e
t
he maximum
a
e
r (A).
l
does not have
u
fficient airflow
ents, turn off th
e
y
, safely dischar
g
n
d release the tr
i
t
ion after use.
A
1
r
accessory
p
ressure
isel is pressed
s and place th
e
c
e to accomplis
g
sufficient,
e
pressure (PSI
)
a
ir pressure
sufficient forc
e
, then a larger
e
impact
g
e any residual
i
gger and/or
e
h
)
e
7 HOMEDEPOT.COM
Please contact 1-800-514-6729 for further assistance.
Care and Cleaning
CAUTION: To prevent accidents, turn off the tool, detach
the air supply, safely discharge any residual air pressure in
the tool, and release the trigger and/or turn the switch to its
off position after use.
□ Clean external surfaces of the tool with a clean, dry cloth, and apply a thin coat of tool oil. Then store the tool indoors out of the reach
of children.
Service Parts
Part Description Quantity
Part Description Quantity
1 Housing
1
10 Spring pin (3 x 18) 1
2 Lower valve
1
11 Air sleeve 1
3 Valve disc
1
12 O-ring (P9) 2
4 Upper valve
1
13 Air regulator 1
5 Piston
1
14 O-ring (2 x 1.5) 1
6 Cylinder
1
15 Valve stem 1
7 Spring retainer
1
16 Valve 1
8 Trigger
1
17 Spring 1
9 Spring pin (3 x 14)
1
18 Air inlet 1
1
9
10
11
12
12
13
14
15
16
17
18
8
2
3
4
5
6
7
Questions, problems, missing parts? Before returning to the store,
call HDX Customer Service
8 a.m. - 6 p.m., EST, Monday-Friday
1-800-514-6729
HOMEDEPOT.COM
Retain this manual for future use.
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