Harbor Freight Tools Impact Driver 94855 User Manual

IMPACT WRENCH  
18 VOLT - CORDLESS  
Model 94855  
OPERATING INSTRUCTIONS  
Due to continuing improvement, actual product may  
differ slightly from product described herein.  
3491 Mission Oaks Blvd., Camarillo, CA 93011  
©
®
Copyright 2006 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.  
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which may ignite the dust or fumes.  
3.  
4.  
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  
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.  
5.  
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.  
6.  
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.  
7.  
8.  
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 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 immediately. Damaged  
Power Cords increase the risk of electric shock.  
9.  
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  
10.  
Stay alert. Watch what you are doing, and use common sense when operating  
a power tool. Do not use a power tool while tired or under the influence of  
drugs, alcohol, or medication. A moment of inattention while operating power  
tools may result in serious personal injury.  
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11.  
12.  
13.  
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.  
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.  
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.  
14.  
15.  
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.  
Use safety equipment. Always wear eye protection. Dust mask, non-skid safety  
shoes, hard hat, or hearing protection must be used for appropriate conditions.  
TOOL USE AND CARE  
16.  
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.  
17.  
18.  
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.  
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.  
19.  
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.  
20.  
21.  
Store idle tools out of reach of children and other untrained persons. Tools  
are dangerous in the hands of untrained users.  
Maintain tools with care. Keep cutting tools sharp and clean. 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.  
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22.  
23.  
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 maintained  
tools.  
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  
24.  
25.  
Tool service must be performed only by qualified repair personnel. Service or  
maintenance performed by unqualified personnel could result in a risk of injury.  
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 instructionsmay  
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.  
3.  
4.  
5.  
Maintain labels and nameplates on the Impact Wrench. These carry important  
information. If unreadable or missing, contact Harbor FreightTools for a replacement.  
When using the Impact Wrench, always maintain a firm grip on the tool with  
both hands.  
Do not use the ImpactWrench or Charger (48) if it has been dropped, damaged,  
left outdoors, or immersed in liquid.  
Do not charge the Battery (30) when the temperature is below 50 degrees  
Fahrenheit or above 104 degrees Fahrenheit.  
6.  
7.  
Do not shake, drop, or strike the Battery (30).  
To avoid electrical shock, do not pull or carry the Charger (48) by its Power  
Cord or pull the Power Cord around sharp corners or edges. Do not unplug the  
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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 (48), 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.  
10.  
Avoid unintentional starting. Make sure you are prepared to begin work before  
turning on the Impact Wrench.  
11.  
12.  
Never leave the Charger (48) unattended when it is plugged into an electrical  
outlet. Make sure to unplug it from its electrical outlet before leaving.  
Always turn off the Impact Wrench and unplug the Charger (48) from its  
electrical outlet before changing accessories or performing any inspection,  
maintenance, or cleaning procedures.  
13.  
Always switch to a fresh Battery (30) when tool performance begins to  
diminish. Severe heat is most destructive to a Battery. The more heat generated,  
the faster the Battery loses power. A Battery that gets too hot can be permanently  
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 performance.  
14.  
Battery (30) leakage may occur under extreme usage or temperature  
conditions. 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.  
16.  
Never burn the Battery, as it can explode in a fire. Do not charge the Impact  
Wrench if it has a leaking Battery. Contact local solid waste authorities for instructions  
on correct disposal or recycling of the Battery.  
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.  
WARNING: This product contains or, when used, produces a chemical known to  
the State of California to cause cancer and birth defects or other  
reproductive harm. (California Health & Safety Code 25249.5, et seq.)  
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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 in-  
stalled by a qualified electrician.  
GROUNDED TOOLS:TOOLS WITH THREE PRONG PLUGS  
1.  
Tools marked with “Grounding Required” have a three wire cord and three prong  
grounding plug. The plug must be connected to a properly grounded outlet. If  
the tool should electrically malfunction or break down, grounding provides a low  
resistance path to carry electricity away from the user, reducing the risk of elec-  
tric shock. (See Figure A.)  
2.  
3.  
The grounding prong in the plug is connected through the green wire inside the  
cord to the grounding system in the tool. The green wire in the cord must be the  
only wire connected to the tool’s grounding system and must never be attached  
to an electrically “live” terminal. (See Figure A.)  
Your tool must be plugged into an appropriate outlet, properly installed and grounded  
in accordance with all codes and ordinances. The plug and outlet should look like  
those in the following illustration. (See Figure A.)  
FIGURE A  
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DOUBLE INSULATED TOOLS:TOOLS WITH TWO PRONG PLUGS  
4.  
5.  
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. (See Figure B.)  
Double insulated tools may be used in either of the 120 volt outlets shown in the  
following illustration. (See Figure B.)  
FIGURE B  
EXTENSION CORDS  
1.  
2.  
Grounded tools require a three wire extension cord. Double Insulated tools  
can use either a two or three wire extension cord.  
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  
serious drop in voltage, resulting in loss of power and possible tool damage.  
(See Figure C, next page.)  
3.  
4.  
5.  
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 C.)  
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 C.)  
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 C.)  
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6.  
7.  
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.  
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.  
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS*  
(120 VOLT)  
NAMEPLATE  
AMPERES  
EXTENSION CORD LENGTH  
(At Full Load)  
25  
Feet  
18  
18  
18  
18  
18  
14  
12  
50  
Feet  
18  
18  
18  
16  
14  
12  
10  
75  
Feet  
18  
18  
16  
14  
12  
10  
-
100  
Feet  
18  
16  
14  
12  
10  
-
– 2.0  
2.1 – 3.4  
3.5 – 5.0  
16  
14  
12  
12  
-
5.1 – 7.0  
7.1 – 12.0  
12.1 – 16.0  
16.1 – 20.0  
-
-
-
* Based on limiting the line voltage drop  
to five volts at 150% of the rated amperes.  
FIGURE C  
SYMBOLOGY  
Double Insulated  
Canadian Standards  
Association  
Underwriters  
Laboratories, Inc.  
Volts Alternating Current  
V ~  
Amperes  
A
n
No Load Revolutions  
per Minute (RPM)  
o
xxxx/min.  
SKU 94855  
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UNPACKING  
When unpacking, check to make sure all the parts shown on the Parts List on page 14  
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.  
PRODUCT FEATURES  
NOTE: For additional information regarding the parts listed in the following pages, refer  
to the Assembly Diagram on page 15.  
1.  
WARNING! Always make sure the Trigger Switch (21) of the Impact  
Wrench is in its “OFF” position, the Battery (30) is removed from the Impact  
Wrench, and the Charger (48) is unplugged from its electrical outlet prior to  
making any adjustments to the tool. (See Figure D.)  
1/2” DRIVE  
IMPACT HEAD  
TRIGGER SWITCH  
(21)  
FORWARD/REVERSE  
BUTTON  
1/2” SOCKET (49)  
(not included)  
BATTERY (30)  
FIGURE D  
STRAP (3)  
2.  
Trigger Switch (21): The Trigger Switch is operated manually simply by squeezing  
the Trigger Switch to turn on the Impact Wrench and releasing pressure on the  
Trigger Switch to turn off the Impact Wrench. (See Figure D.)  
REV 12/06  
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3.  
Forward/Reverse Button: The Forward/Reverse Button 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.  
5.  
1/2” Drive Impact Head: The 1/2” Impact Head features a spring and ball clip to  
securely hold a socket. The Impact Head accepts all sizes of standard and  
metric sockets having a 1/2” drive.  
Battery (30): The power source for the Impact Wrench is a re-chargeable, 18 VDC  
Battery. Make sure to follow all safety precautions when working with the Battery.  
TO CHARGE THE IMPACT WRENCH  
1.  
2.  
3.  
NOTE:The Battery (30) requires charging. The first charge requires 5 hours charge  
time prior to using the Impact Wrench.  
The Battery (30) should only be recharged when the Impact Wrench begins to run  
slowly.  
When the Battery (30) requires recharging, a 3 to 5 hour charge allows the tool to  
operate at full power. Do not recharge the Battery longer than 5 hours, as damage  
to the Battery and/or Impact Wrench will occur.  
4.  
5.  
Remove the Battery (30) from the Impact Wrench. Slide the Charging Base (50)  
onto the top of the Battery (30) (see Figure 1, page 12) and plug the Charger (48)  
into the Charging Base (see Figure 2, page 12). Then plug the Charger (48) into  
the nearest 120 Volt, grounded electrical outlet.  
The red light on the Charger Base (50) indicates that the Battery (30) is charging. It  
will stay lit while the Battery (30) is charging. The Charging Base automatically stop  
charging the Battery (30) when the battery gets too hot (over 113 degrees  
Fahrenheit). It will automaticity resume charging of the Battery (30) when the  
temperature falls below 113 degrees Fahrenheit.  
6.  
The green light on the Charger Base (50) indicates that the Charging Base is getting  
power.  
7.  
Once the Battery (30) is fully charged, disconnect the Charger (48) from the electrical  
outlet. Next disconnect the Charger Base (50) from the Battery (30). Press in the  
tabs on the Battery (30) while sliding out the Charger Base (50) (see Figure 1, on  
the next page).  
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CHARGER BASE (50)  
BATTERY (30)  
GREEN POWER  
INDICATOR  
LIGHTTabs  
Tabs  
Tabs  
CHARGER BASE (50)  
PLUG INTO  
120 VOLT, GROUNDED,  
ELECTRICAL OUTLET  
NOTE: To connect the Charger Base (50)  
to the Battery (30), press in the tabs on  
the Battery while you slide the Charger  
Base forward.  
RED CHARGING  
INDICATOR  
LIGHT  
FIGURE 1  
FIGURE 2  
OPERATING INSTRUCTIONS  
1.  
Before installing the Socket (49), make sure the Battery (30) is removed from the  
Impact Wrench to avoid accidental starting. Then, firmly insert and lock in  
place the Socket onto the 1/2” Impact Head of the tool.  
2.  
3.  
Whenever possible, secure the work piece in place, using a vise or clamps (not  
included).  
Insert the fully charged Battery (30) into the Handle of the Impact Wrench, and  
rotate the Battery 180 degrees to lock the Battery in place.  
4.  
5.  
6.  
Use the Forward/Reverse Button to select the turning rotation of the Impact  
Wrench.  
Insert the Socket (49) onto the nut that is to be loosened/tightened. NOTE: If  
using the accessory 1/2” Socket, the nut itself must be 1/2”.  
Make sure to hold the Impact Wrench firmly with both hands, as torque from the  
Motor will cause the tool to twist. Then, squeeze the Trigger Switch (21) to turn  
on the Impact Wrench. The more you depress the Trigger Switch (21) the faster  
the Impact Wrench will turn.  
7.  
When finished, release the Trigger Switch (21) to stop the Impact Wrench. Then,  
remove the Battery (30) and Socket (49) from the tool.  
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INSPECTION, MAINTENANCE, AND CLEANING  
1.  
2.  
WARNING! Always turn the Trigger Switch (21) to its “OFF” position,  
and unplug the Charger (48) from its electrical outlet before performing any  
inspection, maintenance, or cleaning.  
BEFORE EACH USE, inspect the general condition of the Impact Wrench.  
Check for misalignment or binding of moving parts, cracked or broken parts,  
leaking Battery, damaged Charger wiring, chipped or broken sockets, and any  
other condition that may affect its safe operation. If abnormal noise or vibration  
occurs, have the problem corrected before further use.  
Do not use damaged equipment.  
3.  
DAILY: With a clean cloth, remove all dirt, grease, and oil from the Impact Wrench.  
Do not immerse the Impact Wrench in any liquids.  
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. NEITHER 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 MANUFACTURER AND/OR  
DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE  
UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER  
ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL  
PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION  
OF REPLACEMENT PARTS THERETO.  
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PARTS LIST  
(not included)  
50  
Charger Base  
1
REV 12/06  
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ASSEMBLY DIAGRAM  
27  
25  
2
6
38  
12  
39  
13  
32  
34  
23  
19  
9
4
18 20  
24  
26  
21  
42  
43  
35  
47  
28  
5
11  
33  
7
17  
40  
3
46  
41  
16  
49: 1/2” SOCKET (not included)  
36  
14  
31  
30  
45  
1
44  
8
27  
29  
37  
48  
50  
NOTE: Some parts are listed and shown for illustration purposes only, and are not  
available individually as replacement parts.  
REV 12/06  
SKU 94855  
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