Chicago Electric 90672 User manual

3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http//www.harborfreight.com
Copyright 2003 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.
IMPACT WRENCH - 12 VOLT
MODEL 90672
®
ASSEMBLY AND OPERATING INSTRUCTIONS
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PRODUCT SPECIFICATIONS
SAVE THIS MANUAL
You will need this manual for the safety warnings and precautions, as-
sembly, 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 WARNINGS AND PRECAUTIONS
1. Maintain labels and nameplates on this product. These carry
important information. If unreadable or missing, contact Harbor
Freight Tools for a replacement.
2. Keep work area clean and dry. Cluttered, damp, or wet work areas
invite injuries.
3. Keep children away from work area. Do not allow children to
handle this product.
4. Store idle equipment. When not in use, tools and equipment should
be stored in a dry location to inhibit rust. Always lock up tools and
equipment, and keep out of reach of children.
SKU 90672 PAGE 2
Item Description
Electrical Requirements 12 Volt DC / 4.5 Amps
Torque Capacity 315 Ft./Lbs. (Clockwise)
325 Ft./Lbs. (Counterclockwise)
Drive Socket Sizes 6 Point x 1/2”
(7/8”, 13/16”, 3/4”, 11/16”)
Features Cord/Plug For Cigarette Lighter Receptacle
Cord/Clamps For Battery Terminal
Built-In LED Light For Night Use
Overall Size 9-1/2” L x 3-1/4” W x 7-7/8” H
Weight 5.00 Pounds
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5. Do not use this product if under the influence of alcohol or
drugs. Read warning labels on prescriptions to determine if your
judgement or reflexes are impaired while taking drugs. If there is
any doubt, do not attempt to use this product.
6. Use eye protection. Wear ANSI approved safety impact eye
goggles when using this product. ANSI approved safety impact eye
goggles are available from Harbor Freight Tools.
7. Dress safely. Do not wear loose clothing or jewelry, as they can
become caught in moving parts. Wear a protective hair covering to
prevent long hair from becoming caught in moving parts.
8. Do not overreach. Keep proper footing and balance at all times to
prevent tripping, falling, back injury, etc.
9. Industrial applications must follow OSHA requirements.
10. Stay alert. Watch what you are doing at all times. Use common
sense. Do not use this product when you are tired or distracted from
the job at hand.
11. Check for damaged parts. Before using this product, carefully
check that it will operate properly and perform its intended function.
Check for damaged parts and any other conditions that may affect
the operation of this product. Replace or repair damaged or worn
parts immediately.
12. Replacement parts and accessories: When servicing, use only
identical replacement parts. Only use accessories intended for use
with this product. Approved accessories are available from Harbor
Freight Tools.
13. Maintain this product with care. Keep this product clean and dry
for better and safer performance. For your safety, service and
maintenance should be performed regularly by a qualified technician.
14. Use the right tool for the job. Do not attempt to force a small tool
to do the work of a larger industrial tool. There are certain applica-
tions for which this tool was designed. It will do the job better and
more safely at the capacity 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.
15. Maintain a safe working environment. Keep the work area well lit.
Make sure there is adequate surrounding work space. Always keep
the area free of obstructions, grease, oil, trash, and other debris.
SKU 90672 PAGE 3
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16. Always disconnect the Impact Wrench from its electrical supply
source before changing Sockets or performing any maintenance
on the tool.
17. The Impact Wrench is designed for use with a 12 volt DC system
only. Do not attempt to use any other type of electrical system.
18. To avoid overheating the tool’s Motor (15) do not use the Impact
Wrench continuously for over 8 minutes.
19. Prior to performing maintenance or repair on a vehicle, make
sure to read and understand all instructions and safety precau-
tions as outlined in the vehicle manufacturer’s owner’s manual.
20. This Impact Wrench is designed for emergency purposes only.
For non-emergency purposes, use an industrial/commercial class
Impact Wrench.
21. In the event of an emergency, move the vehicle a safe distance
from the roadside and away from all other traffic. Park the
vehicle on dry, flat, level, ground. Turn off the vehicle, and set
the emergency brake before attempting to change a flat tire.
22. Avoid accidental electrical shock. Keep the Impact Wrench dry at
all times.
23. Avoid eye injuries. Always wear ANSI approved safety impact eye
goggles when working with a vehicle battery which under certain
circumstances can explode, causing possible serious burns and
injuries to the eyes.
24. Avoid contact with battery acid. If splashed, immediately wash
affected area with clean water. Continue washing until medical help
is available.
25. Avoid working alone. If an accident occurs, an assistant can bring
help.
26. When using a power hand tool, always grasp the tool firmly with
both hands to maintain control of the tool.
27. WARNING! People with pacemakers should consult their
physician(s) before using this product. Operation of electrical tools in
close proximity to a heart pacemaker could cause interference or
failure of the pacemaker.
28. 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 90672 PAGE 4
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OPERATING INSTRUCTIONS
NOTE: For additional references to the parts listed on the following pages,
refer to the Assembly Diagram (page 9).
1. Make sure the vehicle is parked safely away from all other moving
traffic. Park the vehicle on a dry, flat, level, ground surface. Turn off
the vehicle, and set the vehicle’s emergency brake.
2. Select the appropriate size Socket (23, 24, 25, or 26) with which to
remove the Lug Nuts on the vehicle’s wheel. Then, attach the Socket
to the Impact Wrench. (See Figure A.)
UNPACKING
When unpacking, check to make sure all the parts shown on the Parts List
(page 9) 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.
Function Note that this 12 volt Impact Wrench operates differently than 115
volt or air impart wrenches. The motor will run to build inertia, then will strike a
blow of the hammer. This is repeated, becoming more rapid with decreased
resistance. This is normal operation for this product.
3. If the vehicle’s cigarette lighter fuse is below 15 amps, you will need
to use the vehicle’s battery as an electric power source, using the
Battery Clamps (27). To do so attach the Red positive (+) Clamp to
the positive (+) terminal on the vehicle’s battery. Then, attach the
Black negative (-) Clamp to the negative (-) terminal on the
vehicle’s battery then connect the Lead Wire Plug (19) to the Battery
Clamps. (See Figure B, next page.)
4. If the vehicle’s cigarette lighter fuse is above 15 amps, you may use
the vehicle’s cigarette lighter receptacle as an electric power source.
To do so, remove the cigarette lighter and insert the Lead Wire Plug
(19) firmly into the cigarette lighter receptacle. (See Figure C,
next page.)
FIGURE A
SOCKET
(23, 24, 25, 26)
TRIGGER
(1)
LED LIGHT
(18)
FORWARD/REVERSE
SWITCH (16)
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5. Remove the vehicle’s spare tire and set it aside.
6. Use the vehicle’s jack to raise the vehicle. CAUTION! Refer to the
vehicle manufacturer’s owner’s manual for instructions on using the
jack and to determine the proper lifting points on the vehicle. Always
chock the opposite wheel.
7. If necessary, remove the wheel’s hubcap to expose the wheel lug
nuts.
8. Make sure the Impact Wrench is off. Then, depress the Forward/
Reverse Switch (16) to its Reverse position (counterclockwise
rotation). (See Figure D, next page.)
BLACK NEGATIVE (-) CLAMP
TO NEGATIVE (-) BATTERY TERMINAL
RED POSITIVE (+) CLAMP
TO POSITIVE (+) BATTERY
TERMINAL
BATTERY CLAMPS (27)
LEAD
WIRE
PLUG (19)
FIGURE B
LEAD WIRE
PLUG (19)
CIGARETTE
LIGHTER
RECEPTACLE
FIGURE C
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SKU 90672 PAGE 7
13. Note: Check vehicle owner’s manual for tightening sequence. Insert
the Socket (23, 24, 25, 26) onto the first wheel lug nut and, while
maintaining a firm grip on the Impact Wrench with both hands,
squeeze the Trigger (1) until the wheel lug nut is firmly tightened onto
the wheel lug bolt. Release pressure on the Trigger to turn the
Impact Wrench off. Then, repeat this Step to tighten the remaining
wheel lug nuts onto the lug bolts. (See Figure D.)
14. Using the vehicle’s jack, slowly and carefully lower the vehicle.
15. If necessary, re-attach the vehicle’s hubcap to the wheel. Then, store
the vehicle’s jack and spare tire securely in the trunk of the vehicle.
16. If the vehicle’s battery was used to supply electricity to the Impact
Wrench, disconnect the Red and Black Battery Clamps (30) from the
battery. Disconnect the Lead Wire Plug (19) from the Battery
Clamps. Remove the Socket (23, 24, 25, 26) from the Impact
Wrench. Place the Impact Wrench and its accessories in the
Carrying Case. Then, store the Carrying Case securely in the
vehicle’s trunk. (See Figure B.)
RF
REVERSE FORWARD
FORWARD/REVERSE
SWITCH (16)
FIGURE D
9. Insert the Socket (23, 24, 25, 26) onto the first wheel lug nut and,
while maintaining a firm grip on the Impact Wrench with both hands,
squeeze the Trigger (1) until the wheel lug nut is removed from the
wheel lug bolt. Release pressure on the Trigger to turn the Impact
Wrench off. Remove the wheel lug nut from the Socket and set the
lug nut aside. Then, repeat this Step to remove the remaining wheel
lug nuts.
10. Once all of the wheel lug nuts are removed, carefully remove the
vehicle’s flat tire and install the spare tire onto the wheel lug bolts.
11. Finger tighten each of the wheel lug nuts onto the wheel lug bolts.
12. Make sure the Impact Wrench is off. Then, depress the Forward/
Reverse Switch (16) to its Forward position (clockwise rotation).
(See Figure D.)
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SKU 90672 PAGE 8
INSPECTION, MAINTENANCE, AND CLEANING
1. Before each use, inspect the general condition of the Impact
Wrench. Check for loose connections, cracked, or broken parts,
excessively worn or damaged wiring, and any other condition that
may affect the safe and proper operation of the Impact Wrench. If a
problem occurs, have the problem corrected before further use. Do
not use damaged equipment.
2. When cleaning, use only water and a mild detergent. Do not
immerse the Impact Wrench in liquid. Do not use cleaners that are
combustible or corrosive.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST
AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEI-
THER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION
OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO
MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO
REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTUER AND/OR
DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACE-
MENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS,
AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARIS-
ING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACE-
MENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF
REPLACEMENT PARTS THERETO.
17. If the vehicle’s cigarette lighter receptacle was used to supply
electricity to the Impact Wrench, disconnect the Lead Wire Plug (19)
from the cigarette lighter receptacle. Insert the cigarette lighter back
into its receptacle. Remove the Socket (23, 24, 25, 26) from the
Impact Wrench. Place the Impact Wrench and its accessories in the
Carrying Case. Then, store the Carrying Case securely in the
vehicle’s trunk.
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NOTE: Some parts are listed and shown for illustration purposes only, and
are not available individually as replacement parts.
Part # Description Part # Description
1 Trigger 18 LED Light
2 Switch Return Spring 19 Lead Wire Plug
3 Housing (L) 20 Tapping Screw
4 Output Spindle Bearing 21 Housing (R)
5 Ball Bearing 22 Nameplate
6 Steel Ball 23 Socket (11/16”)
7 Output Spindle 24 Socket (3/4”)
8 Bearing 25 Socket (13/16”)
9 Shift Pin 26 Socket (7/8”)
10 Shift Spindle 27 Battery Clamps
11 Clutch Return Spring 28 Label
12 Clutch Return Steel Ball 29 Carrying Case
13 Shift Block
14 Bearing
15 Motor
16 Forward/Reverse Switch
17 Starting Switch
PARTS LIST AND ASSEMBLY DIAGRAM
SKU 90672 PAGE 9
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