Ironton 46127 User manual

18V LI-ION
1/2IN. IMPACT WRENCH
OWNER’S MANUAL
WARNING:
Read carefully and understand all ASSEMBLY AND OPERATION
INSTRUCTIONS before operating. Failure to follow the safety rules and other
basic safety precautions may result in serious personal injury.
Item# 46127

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Thank you very much for choosing an Ironton product! For future reference, please complete
the owner’s record below:
Model: _______________ Purchase Date: _______________
Save the receipt, warranty and these instructions. It is important that you read the entire manual
to become familiar with this product before you begin using it.
This machine is designed for certain applications only. The distributor cannot be responsible for
issues arising from modification. We strongly recommend this machine not be modified and/or
used for any application other than that for which it was designed. If you have any questions
relative to a particular application, DO NOT use the machine until you have first contacted the
distributor to determine if it can or should be performed on the product.
For technical questions please call 1-800-222-5381.
INTENDED USE
With a durable, solid design, this impact wrench is built to last. The forward/ reverse lever
enables you to securely fasten or remove sockets.
TECHNICAL SPECIFICATIONS
No Load Speed
0–2200 RPM
Max. Tightening Torque:
207 ft.-lbs.
Input Voltage
120V, 60Hz
Output Voltage
DC-21V
Battery Type:
Lithium-ion
Battery Pack Capacity:
1.3Amp/Hr
Impact Power:
0–3300 IPM
GENERAL SAFETY RULES
WARNING: Read and understand all instructions. Failure to follow all instructions listed
below may result in serious injury.
CAUTION: Do not allow persons to operate or assemble this Impact Wrench until
they have read this manual and have developed a thorough understanding of how the Impact
Wrench works.
WARNING: The warnings, cautions, and instructions discussed in this instruction
manual cannot cover all possible conditions or situations that could occur. It must be
understood by the operator that common sense and caution are factors that cannot be built into this
product, but must be supplied by the operator.
SAVE THESE INSTRUCTIONS

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IMPORTANT SAFETY CONSIDERATIONS
WARNING: Read all safety warnings and all instructions. Failure to follow the
warnings and instructions may result in electric shock, fire 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.
1. Work area safety
a. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
b. Do not operate power tools in explosive atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks, which may ignite the dust or fumes.
c. Keep children and bystanders away while operating a power tool. Distractions can cause you
to lose control.
2. Electrical safety
a. Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any
adapter plugs with grounded power tools. Unmodified plugs and matching outlets will reduce risk
of electric shock.
b. 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.
c. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase
the risk of electric shock.
d. 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.
e. 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.
f. If operating a power tool in a damp location is unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk of electric shock.
3. Personal safety
a. 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 influence of drugs, alcohol or medication. A
moment of inattention while operating power tools may result in serious personal injury.
b. 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.
c. 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
finger on the switch or energizing power tools that have the switch on invites accidents.
d. 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.

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e. Do not overreach. Keep proper footing and balance at all times. This enables better control of
the power tool in unexpected situations.
f. 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.
g. If devices are provided for the connection of dust extraction and collection facilities, ensure
these are connected and properly used. Use of dust collection can reduce dust-related hazards.
4. Power tool use and care
a. 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.
b. 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.
c. 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.
d. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
e. Use the power tool, accessories and 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.
5. Service
a. Have your power tool serviced by a qualified repair person using only identical replacement
parts. This will ensure that the safety of the power tool is maintained.
BATTERY AND CHARGER SAFETY WARNINGS
THIS MANUAL CONTAINS IMPORTANT SAFETY AND OPERATING INSTRUCTIONS FOR
YOUR BATTERY CHARGER.
1. Before using the charger read all instructions and cautionary markings on the charger, battery
pack and the product using the battery pack.
2. This charger is not intended for any uses other than charging rechargeable batteries. Any other
use may result in risk of fire, electric shock or electrocution.
3. Do not place any object on top of the charger or place the charger on a soft surface that may
result in excessive internal heat. Place the charger in a position away from any heat source.
4. To reduce risk of damage to the electric plug and cord, pull by the plug rather than the cord
when disconnecting the charger.
5. Make sure the cord is located so that it will not be stepped on, tripped over, or otherwise
subjected to damage or stress.
6. An extension cord should not be used unless absolutely necessary. Use of an improper
extension cord could result in the risk of fire, electric shock or electrocution.
7. Do not operate the charger if it has received a sharp blow, been dropped or otherwise damaged
in any way. Have it checked by an electrician or power tool repairer.

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8. Do not disassemble charger. Take it to an electrician or power tool repairer when service or
repair is required. Incorrect reassembly may result in a risk of electric shock, electrocution or
fire.
9. To reduce risk of electric shock, unplug the charger from the outlet before attempting any
cleaning. Removing the battery pack will not reduce this risk.
10. Never attempt to connect 2 chargers together.
11. DO NOT store or use the tool and battery pack in locations where the temperature may reach or
exceed 104ºF (such as inside sheds or metal buildings in summer).
12. The charger is designed to operate on standard household electrical power (120 volts). Do not
attempt to use it on any other voltage!
13. The battery pack is not fully charged out of the carton. First read the safety instructions and then
follow the charging notes and procedures.
14. The longest life and best performance can be obtained if the battery pack is charged when the
air temperature is between 64-75ºF. Do not charge the battery pack in an air temperature below
50ºF or above 104ºF. This is important and will prevent damage to the battery pack.
15. Do not incinerate the battery pack even if it is seriously damaged or is completely worn out. The
battery can explode in a fire.
16. Never attempt to open the battery pack for any reason. If the plastic housing of the battery pack
breaks or cracks, immediately discontinue use and do not recharge.
17. During charging, the battery must be placed in a well-ventilated area.
IMPACT WRENCH USE AND CARE
•Do not modify the Impact Wrench in any way. Unauthorized modification may impair the
function and/or safety and could affect the life of the equipment. There are specific applications
for which the Impact Wrench was designed.
•Always check of damaged or worn out parts before using the Impact Wrench. Broken
parts will affect the Impact Wrench operation. Replace or repair damaged or worn parts
immediately.
•Store idle Impact Wrench. When Impact Wrench is not in use, store it in a secure place out of
the reach of children. Inspect it for good working condition prior to storage and before re-use.
•ALWAYS use the impact wrench in the manner and for the functions described in these
instructions.
•ALWAYS ensure the machine is not moving with the switchbar in the center position when
changing sockets etc. Use only Impact Wrench sockets; DO NOT use standard sockets.
•ALWAYS finish tightening wheel nuts or engine parts with a torque wrench or suitable spanner
to the correct torque as recommended by the vehicle manufacturer.
•ALWAYS avoid excessive use of the wrench. When tightening a nut or bolt, never allow the
wrench to impact more than 8 times - to avoid over tightening — 3 to 4 impacts is normally
sufficient.
•ALWAYS use outdoor extension leads if working outdoors. Always use an approved cable
extension suitable for the power rating of the battery charger (see specifications), the conductor
size should also be at least the same size or larger than that on the charger. When using a
cable reel, always unwind the cable completely.

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OPERATION
Battery Charging
1. Plug charging jack into charging cradle. Both
lights will illuminate when connected.
2. Slide cradle onto the battery. Only the red
light will be illuminated when properly connected
and charging.
Note: Once fully charged, both the red and green lights will illuminate.
Installing and Removing
Slide the battery into the impact wrench base
until it clicks into place.
Hold down the battery release buttons and slide
the battery out.
Battery Indicator
1. Depress the battery indicator button.

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2. Observe which lights illuminate for a reading on your battery’s charge.
Full Charge 50% Charge Low Charge
INSTALLING A SOCKET
CAUTION!ALWAYS BE SURE THAT THE TOOL IS SWITCHED OFF BEFORE
ATTACHING OR REMOVING A SOCKET. ALWAYS TAKE CARE TO USE THE CORRECT SIZE
SOCKET FOR BOLTS AND NUTS. AN INCORRECT SOCKET WILL CAUSE DAMAGE TO THE
BOLT OR NUT.
1. Align the chosen socket and simply push it onto the anvil. Use only ó” square drive impact
sockets supplied.
2. Squeeze the trigger to start the wrench. Release the trigger to stop.
3. To run the impact wrench in reverse, push the switch-bar through the drive unit. The direction of
rotation is shown on the end face of the switch-bar.
• The 3-position switch bar controls forward or reverse direction of rotation. Select the appropriate
position ONLY when the machine is STATIONARY. Do not move the switch bar when the spindle is
moving. When the switch-bar is in the central position the trigger is locked.
4. Always check the direction of rotation before operation.
5. Turn off the machine as soon as the impact sound is heard.
Note: As the battery becomes discharged, the power available will drop.
Operating the machine at low speed will cause a reduction in torque.
LOOSENING A WHEEL NUT
1. Remove any wheel trim, before selecting the appropriate socket and placing firmly on the square
drive of the wrench.
2. With the FORWARD/NEUTRAL/REVERSE switch bar in the REVERSE running position, and
holding the wrench firmly in BOTH HANDS, pull the trigger. The nut will be impacted repeatedly until
it is loosened. IMPORTANT! Release the trigger immediately the nut begins to loosen.
3. Jack up the vehicle according to the vehicles handbook so that the wheel is clear of the ground,
then proceed to fully undo the wheel nuts.
ENSURE THAT THE CORRECT SOCKET IS BEING USED FOR THE NUTS ON YOUR
PARTICULAR VEHICLE. AN INCORRECT SOCKET SIZE IS LIKELY TO DAMAGE THE HEADS
OF THE BOLTS/NUTS.

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TIGHTENING A NUT
1 Start the nut by hand, ensuring it is not cross threaded, then with the appropriate socket installed
on the wrench, place it on the nut.
2. With the FORWARD/NEUTRAL/REVERSE switch-bar in the clockwise (FORWARD) running
position, and holding the wrench firmly in BOTH HANDS, pull the trigger.
3. Run each nut up in turn until it is ‘nipped’ up only - do not tighten. When all nuts are nipped up,
tighten progressively by pulling the trigger fully and allowing the action to operate for 3 to 4 impacts
only to prevent overtightening.
4. ALWAYS finish tightening with a torque wrench. The weight of the vehicle will need to be placed
on the wheel to prevent it from rotating while the nuts are tightened. Ensure the final torque applied
to the nuts meets the vehicle manufacturer’s recommendations.
VARIABLE SPEED
You can vary the spindle rotation speed by modulating finger pressure on the trigger.
MAINTENANCE
•Maintain your Impact Wrench. It is recommended that the general condition of any Impact
Wrench be examined before it is used. Keep your Impact Wrench in good repair by adopting a
program of conscientious repair and maintenance. Have necessary rep airs made by qualified
service personnel.
•When not in use, the impact driver should be stored in a dry, frost free location, keep out of
children’s reach.
•Keep ventilation slots of the impact driver clean at all times and prevent anything from entering.
•If the housing of the Impact Wrench requires cleaning, do not use solvents. Use of a cloth only
is recommended.
•Blow out the ventilation slots with compressed air periodically.
TROUBLESHOOTING
LED lights do not illuminate on charger
Check the charging adaptor is securely plugged into the wall outlet.
Check the battery is firmly connected to the charging cradle.
Check that the charging jack is securely connected to the charging cradle.
The battery has a short run time
Ensure the battery is properly charged. It will take 4-5 charging cycles before the battery reaches
optimum charge and run time.
Variable speed trigger is locked
Ensure that the forward / reverse lever is in the correct position; pressed left for forwards direction,
pressed right for backwards direction. If it is in between the two settings the variable speed trigger
will be locked.
Impact Wrench has cut out during use
Use the battery indicator button to check if the battery has gone flat. If the indicator does not work or
indicates that the battery still has charge, it is likely that the battery’s thermal voltage protection has

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been activated. This can happen when the tool has been used for extended periods or worked hard
with large drill bits or accessories.
Place the battery on the charging cradle for 3-5 hours. It will need this time to cool down and for the
protection circuits to be reset.
Sparking visible through the housing air vents
A small amount of sparking may be visible through the housing vents. This is normal and does not
indicate a problem.
DIAGRAM AND PARTS LIST

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For replacement parts and technical questions, please call 1-800-222-5381.
NO.
Part Name
QT
1
cross plate tapping screw
4
2
head housing
1
3
O-ring
1
4
shaft sleeve
1
5
gasket
1
6
output shaft
1
7
wrench assembly
1
8
left housing
1
9
left decorative cover
1
10
transparent lampshade
1
11
LED
1
12
positive and negative push rod
1
13
variable speed urgent stop switch
1
14
insert frame
1
15
18V Li-ion battery
1
16
right housing
1
17
right decorative cover
1
18
cross plate tapping screw
8
19
cross plate tapping screw
1

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WARNING
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 and cement and other masonry products, and
• 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 specially designed to filter out microscopic particles.
Distributed by
Northern Tool + Equipment Co., Inc.
Burnsville, Minnesota 55306
NorthernTool.com
Made in China