Chicago Electric 92798 User manual

CORDLESS IMPACT WRENCH
1/2” DRIVE - 19.2 VOLT
Model 92798
OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at: http://www.harborfreight.com
Copyright 2005 by Harbor Freight Tools®. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.
For technical questions, please call 1-800-444-3353.
®
©
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.

SKU 92798 For technical questions, please call 1-800-444-3353. Page 2
PRODUCT SPECIFICATIONS
SAVE THIS MANUAL
You will need this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures, parts list and assembly diagram.
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.
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 injury.
SAVE THESE INSTRUCTIONS
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
UNPACKING
When unpacking, check to make sure all the parts shown on the Parts List on page 13
are included. If any parts are missing or broken, please call Harbor Freight Tools at the
number shown on the cover of this manual as soon as possible.
Item Description
Electrical Requirements Power Output: 19.2 VDC
Power Input: 120 VAC/60 Hz Charger
Battery Type: 1.7Ah Panasonic
Charge Time: 1 Hour Fast Charge
Charger Power Plug: 2 Prong, Polarized
Drive Size 1/2”
Trigger Type Variable Speed
0-2300 RPM / 0-2300 BPM
Reversible
Maximum Torque 260 Ft./Lbs.
Sockets Included 4 Qty – Sizes: 11/16”, ¾”, 13/16”, 7/8”
Overall Dimensions 11” L x 3-3/8” W x 10-7/8” H
Weight 7.3 Pounds
©
REV 03/05

SKU 92798 For technical questions, please call 1-800-444-3353. Page 3
3. Keep bystanders, children, and visitors away while operating a power tool.
Distractions can cause you to lose control. Protect others in the work area from
debris such as chips and sparks. Provide barriers or shields as needed.
ELECTRICAL SAFETY
1. Grounded tools must be plugged into an outlet properly installed and
grounded in accordance with all codes and ordinances. Never remove the
grounding prong or modify the plug in any way. Do not use any adapter
plugs. Check with a qualified electrician if you are in doubt as to whether
the outlet is properly grounded. If the tools should electrically malfunction or
break down, grounding provides a low resistance path to carry electricity away
from the user.
2. 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.
3. 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.
4. Do not expose power tools to rain or wet conditions. Water entering a power
tool will increase the risk of electric shock.
5. Do not abuse the Power Cord. Never use the Power Cord to carry the tools
or pull the Plug from an outlet. Keep the Power Cord away from heat, oil,
sharp edges, or moving parts. Replace damaged Power Cords immedi-
ately. Damaged Power Cords increase the risk of electric shock.
6. When operating a power tool outside, use an outdoor extension cord
marked “W-A” or “W”. These extension cords are rated for outdoor use, and
reduce the risk of electric shock.
PERSONAL SAFETY
1. Stay alert. Watch what you are doing, and use common sense when oper-
ating a power tool. Do not use a power tool while tired or under the influ-
ence of drugs, alcohol, or medication. A moment of inattention while operat-
ing power tools may result in serious personal injury.
which may ignite the dust or fumes.

SKU 92798 For technical questions, please call 1-800-444-3353. Page 4
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 the Power Switch is off before plugging
in. Carrying power tools with your finger on the Power Switch, or plugging in
power tools with the Power Switch on, invites accidents.
4. Remove adjusting keys or wrenches before turning the power tool on. A
wrench or a key that is left attached to a rotating part of the power 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 power tool in unexpected
situations.
6. Use safety equipment. Always wear eye ANSI-approved safety impact eye
goggles. Dust mask, non-skid safety shoes, hard hat, or hearing protection
must be used for appropriate conditions.
TOOL USE AND CARE
1. Use clamps (not included) or other practical ways 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 the 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 the power tool if the Power Switch does not turn it on or off.
Any tool that cannot be controlled with the Power Switch is dangerous and must
be replaced.
4. Disconnect the Power Cord Plug from 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 tools clean and dry. Properly maintained
tools with a sharp cutting edge are less likely to bind and are easier to control.
Do not use a damaged tool. Tag damaged tools “Do not use” until repaired.

SKU 92798 For technical questions, please call 1-800-444-3353. Page 5
7. Check for misalignment or binding of moving parts, breakage of parts, and
any other condition that may affect the tool’s operation. If damaged, have
the tool serviced before using. Many accidents are caused by poorly main-
tained 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.
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 “Inspection, Maintenance, And Cleaning” section of this
manual. Use of unauthorized parts or failure to follow maintenance instructions
may create a risk of electric shock or injury.
SPECIFIC SAFETY RULES
1. Maintain a safe working environment. Keep the work area well lit. Make sure
there is adequate surrounding workspace. Always keep the work area free of
obstructions, grease, oil, trash, and other debris. Do not use the Impact Wrench
in areas near flammable chemicals, dusts, and vapors. Do not use this product
in a damp or wet location.
2. Maintain labels and nameplates on the Impact Wrench. These carry
important information. If unreadable or missing, contact Harbor Freight Tools for
a replacement.
3. When using the Impact Wrench, always maintain a firm grip on the tool with
both hands.
4. Do not use the Impact Wrench or Charger (39) if it has been dropped, dam-
aged, left outdoors, or immersed in liquid.
5. Do not charge the Battery (37) when the temperature is below 50 degrees
Fahrenheit or above 104 degrees Fahrenheit.
6. Do not shake, drop, or strike the Battery (37).
7. To avoid electrical shock, do not pull or carry the Charger (39) by its
Power Cord or pull the Power Cord around sharp corners or edges. Do not

SKU 92798 For technical questions, please call 1-800-444-3353. Page 6
unplug the Charger by pulling on the Power Cord. Keep the Power Cord
away from heated surfaces.
8. To avoid electrical shock, do not handle the Charger (39), its Power
Cord Plug, or the Impact Wrench with wet hands.
9. Keep the Handle of the Impact Wrench dry, clean, free from oil and
grease.
12. Always turn off the Impact Wrench and unplug the Charger (39) from
its electrical outlet before changing accessories or performing any inspec-
tion, maintenance, or cleaning procedures.
13. Always switch to a fresh Battery (37) when tool performance begins to
diminish. Severe heat is most destructive to a Battery. The more heat gener-
ated, the faster the Battery loses power. A Battery that gets too hot can be per-
manently damaged. Never over-discharge a Battery by using the tool even after
tool performance is decreasing. Never attempt to discharge a tool’s Battery by
continuing to pull the tool’s trigger. When tool performance begins to diminish,
stop the tool, recharge the Battery, and use the fresh Battery for optimal perfor-
mance.
16. WARNING! People with pacemakers should consult their physician(s)
before using this product. Operation of electrical equipment in close proximity to
a heart pacemaker could cause interference or failure of the pacemaker.
11. Never leave the Charger (39) unattended when it is plugged into an
electrical outlet. Make sure to unplug it from its electrical outlet before leaving.
10. Avoid unintentional starting. Make sure you are prepared to begin work
before turning on the Impact Wrench.
14. Battery (37) leakage may occur under extreme usage or temperature condi-
tions. If Battery fluid comes in contact with skin, wash with soap and water and
rinse with lemon juice and vinegar. If the fluid comes into contact with the eyes,
flush with water for several minutes and contact a doctor immediately.
15. Never burn the Battery, as it can explode in a fire. Do not charge the Impact
Wrench with a leaking Battery. Contact local solid waste authorities for instruc-
tions on correct disposal or recycling of the Battery.
17. WARNING! The warnings, precautions, and instructions discussed in this
manual cannot cover all possible conditions and situations that may occur. The
operator must understand that common sense and caution are factors, which
cannot be built into this product, but must be supplied by the operator.

SKU 92798 For technical questions, please call 1-800-444-3353. Page 7
GROUNDING
WARNING!
Improperly connecting the grounding wire can result in the risk of electric
shock. Check with a qualified electrician if you are in doubt as to whether the
outlet is properly grounded. Do not modify the power cord plug provided with
the tool. Never remove the grounding prong from the plug. Do not use the
tool if the power cord or plug is damaged. If damaged, have it repaired by
a service facility before use. If the plug will not fit the outlet, have a proper
outlet installed by a qualified electrician.
DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS
1. Tools marked “Double Insulated” do not require grounding. They have a special
double insulation system which satisfies OSHA requirements and complies with
the applicable standards of Underwriters Laboratories, Inc., the Canadian
Standard Association, and the National Electrical Code.
2. Double insulated tools may be used in either of the 120 volt outlets shown in the
following illustration. (See Figure A.)
FIGURE A
EXTENSION CORDS
1. Grounded tools require a three wire extension cord. Double Insulated tools
can use either a two or three wire extension cord.
2. As the distance from the supply outlet increases, you must use a heavier gauge
extension cord. Using extension cords with inadequately sized wire causes a
120 VOLT, GROUNDED,
ELECTRICAL OUTLET.

SKU 92798 For technical questions, please call 1-800-444-3353. Page 8
serious drop in voltage, resulting in loss of power and possible tool damage.
(See Figure B.)
3. The smaller the gauge number of the wire, the greater the capacity of the cord.
For example, a 14 gauge cord can carry a higher current than a 16 gauge cord.
(See Figure B.)
4. When using more than one extension cord to make up the total length, make
sure each cord contains at least the minimum wire size required.
(See Figure B.)
5. If you are using one extension cord for more than one tool, add the nameplate
amperes and use the sum to determine the required minimum cord size.
(See Figure B.)
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS*
(120 VOLT)
NAMEPLATE
AMPERES
(At Full Load)
EXTENSION CORD LENGTH
25
FEET
50
FEET
75
FEET
100
FEET
150
FEET
0-2.0 18 18 18 18 16
2.1-3.4 18 18 18 16 14
3.5-5.0 18 18 16 14 12
5.1-7.0 18 16 14 12 12
7.1-12.0 16 14 12 10 -
12.1-16.0 14 12 10 - -
16.1-20.0 12 10 - - -
*Based on limiting the line voltage drop
to five volts at 150% of the rated amperes.
FIGURE B
6. If you are using an extension cord outdoors, make sure it is marked with the
suffix “W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
7. Make sure your extension cord is properly wired and in good electrical condition.
Always replace a damaged extension cord or have it repaired by a qualified
electrician before using it.
8. Protect your extension cords from sharp objects, excessive heat, and damp or
wet areas.

SKU 92798 For technical questions, please call 1-800-444-3353. Page 9
SYMBOLOGY
Double Insulated
Canadian Standards
Association
Underwriters
Laboratories, Inc.
Volts Alternating Current
Amperes
No Load Revolutions
per Minute (RPM)
xxxx/min.
A
V ~
no
FIGURE C
PRODUCT FEATURES
NOTE: For additional information regarding the parts listed in the following pages, refer
to the Assembly Diagram on page 13.
1. WARNING! Always make sure the Trigger (36) of the Impact Wrench is in
its “OFF” position, the Battery (37) is removed from the Impact Wrench, and the
Charger (39) is unplugged from its electrical outlet prior to making any adjust-
ments to the tool. (See Figure D, next page.)
2. Trigger (36): The Trigger is operated manually simply by squeezing the Trigger to
turn on the Impact Wrench and releasing pressure on the Trigger to turn off the
Impact Wrench. (See Figure D.)
3. Forward/Reverse Switch (32): The Forward/Reverse Switch allows you to change
the rotational direction of the Impact Wrench. For a clockwise rotation, move the
Forward/Reverse Button to the right . For a counterclockwise rotation, move the
Forward/Reverse Button to the left . To avoid damage to the Impact Wrench,
always wait until the tool completely stops before changing rotational directions.
(See Figure D.)
4. 1/2” Drive Impact Head (7): The 1/2” Impact Head features a spring and ball to
securely hold a socket. The Impact Head accepts all sizes of standard and metric
sockets having a 1/2” drive. (See Figure D.)
REV 03/05

SKU 92798 For technical questions, please call 1-800-444-3353. Page 10
5. Battery (37): The power source for the Impact Wrench is a rechargeable,
19.2 VDC Battery. Make sure to follow all safety precautions when working with the
Battery. (See Figure D.)
6. Charger (39): The Charger is powered by plugging its Power Plug into a 120 volt,
grounded, electrical outlet. NEVER attempt to power the Charger with any other
electrical source other than a 120 volt, grounded electrical outlet. (See Figure D.)
FIGURE D
TO CHARGE THE IMPACT WRENCH
1. NOTE: The Battery (37) requires charging. The first charge requires 1 hour
charge time prior to using the Impact Wrench. (See Figure D.)
2. The Battery (37) should only be recharged when the Impact Wrench begins to
run slowly. (See Figure D.)
3. When the Battery (37) requires recharging, a 1 hour charge allows the tool to
operate at full power. Do not recharge the Battery longer than 1 hour, as damage
to the Battery and/or Impact Wrench will occur. (See Figure D.)
4. Make sure the Trigger (36) on the Impact Wrench is in its “OFF” position. Slide
the Battery (37) off the handle of the Impact Wrench. Insert the Battery into the
charging socket of the Charger (39). Then plug the Charger into the nearest 120
volt, grounded, electrical outlet. (See Figure D.)
TO 120 VOLT,
GROUNDED,
ELECTRICAL
OUTLET.
BATTERY
(37)
CHARGER
(39)
IMPACT HEAD
(7)
TRIGGER
(36)
FORWARD/REVERSE
SWITCH
(32)
BATTERY
(37)