Jet JNS-5030 Manual

Operating and Maintenance Instructions
3/8-inch Air Impact Wrench
Model JNS-5030
JET
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-JNS5030
Ph.: 800-274-6848 Revision B1 05/2014
www.jettools.com Copyright © 2014 JET

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Warranty and Service
JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please
contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday.
Warranty Period
The general warranty lasts for the time period specified in the literature included with your product or on the official
JET branded website.
•JET products carry a limited warranty which varies in duration based upon the product. (See chart below)
•Accessories carry a limited warranty of one year from the date of receipt.
•Consumable items are defined as expendable parts or accessories expected to become inoperable within a
reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.
Who is Covered
This warranty covers only the initial purchaser of the product from the date of delivery.
What is Covered
This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty
does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear,
improper repair, alterations or lack of maintenance.
Warranty Limitations
Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a
Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.
How to Get Technical Support
Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof
of initial purchase when calling. If a product requires further inspection, the Technical Service representative will
explain and assist with any additional action needed. JET has Authorized Service Centers located throughout the
United States. For the name of an Authorized Service Center in your area call 1-800-274-6846 or use the Service
Center Locator on the JET website.
More Information
JET is constantly adding new products. For complete, up-to-date product information, check with your local distributor
or visit the JET website.
How State Law Applies
This warranty gives you specific legal rights, subject to applicable state law.
Limitations on This Warranty
JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT.
EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN
IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
JET SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR
INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR
PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
JET sells through distributors only. The specifications listed in JET printed materials and on official JET website are
given as general information and are not binding. JET reserves the right to effect at any time, without prior notice,
those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason
whatsoever. JET®branded products are not sold in Canada by JPW Industries, Inc.
Product Listing with Warranty Period
90 Days – Parts; Consumable items; Light-Duty Air Tools
1 Year – Motors; Machine Accessories; Heavy-Duty Air Tools; Pro-Duty Air Tools
2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used
for industrial or commercial purposes
5 Year – Woodworking Machinery
Limited Lifetime – JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist
Accessories; Shop Tools; Warehouse & Dock products; Hand Tools
NOTE: JET is a division of JPW Industries, Inc. References in this document to JET also apply to JPW Industries,
Inc., or any of its successors in interest to the JET brand.

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1. Read and understand this entire manual before attempting assembly or operation.
2. Read and understand the warnings posted on the tool and in this manual. Failure to comply with all of
these warnings may cause serious injury.
3. Replace the warning labels if they become obscured or removed.
4. This impact wrench is designed and intended for use by properly trained and experienced personnel
only. If you are not familiar with the proper and safe operation of an air-powered impact wrench, do
not use until proper training and knowledge have been obtained.
5. Do not use this tool for other than its intended use. If used for other purposes, JET disclaims any real
or implied warranty and holds itself harmless from any injury that may result from that use.
6. Always wear approved safety glasses/face shields while using this impact wrench. (Everyday
eyeglasses only have impact resistant lenses; they are not safety glasses.)
7. Wear ear protectors (plugs or muffs) if the noise exceeds normal levels.
8. Use gloves if needed when operating the impact wrench. Keep hands and body away from the
working area of the tool.
9. Some dust created by power sanding, sawing, grinding, drilling and other construction activities
contain chemicals known to cause cancer, birth defects or other reproductive harm. Some examples
of these chemicals are:
•Lead from lead based paint.
•Crystalline silica from bricks, cement and other masonry products.
•Arsenic and chromium from chemically treated lumber.
Your risk of exposure 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 face or dust masks that are specifically designed to filter out microscopic
particles.
10. Do not operate this tool while tired or under the influence of drugs, alcohol or any medication.
11. Maintain proper balance and keep your footing at all times. Non-slip footwear or anti-skid floor strips
are recommended.
12. Before operating this impact wrench, remove tie, rings, watches and other jewelry, and roll sleeves up
past the elbows. Remove all loose clothing and confine long hair.
13. Excessive air pressure and too much free rotation may decrease the life of the tool and may cause a
hazardous situation.
14. Check air hoses for wear, and keep them away from heat and sharp edges. Do not carry the impact
wrench by the air hose.
15. Do not use this air tool near flammable objects or potentially explosive environments.
16. Do not leave a connected tool unattended. When not in use, disconnect tool from the air source.
17. Disconnect impact wrench from air supply before making adjustments or changing accessories.
18. Keep work area clean and free of clutter.
19. Keep visitors a safe distance from the work area. Keep children away.
20. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.
21. Do not force a tool or attachment to do a job for which it was not designed. The right tool will do the
job better and safer.
22. Repetitive motions and/or exposure to constant vibration can be harmful to hands and arms. Take
breaks and relax your hands occasionally during extended operation of the impact wrench.

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23. Compressed air can be harmful if directed toward sensitive areas of the body, and may propel small
particles caught in the air stream. Exercise proper caution.
24. Use recommended accessories; improper accessories may be hazardous.
25. Maintain tools with care. Keep the impact wrench clean and oiled for best and safest performance.
Specifications
Stock Number.............................................................................................................................JNS-5030
Square Drive (in.).................................................................................................................................3/8
Capacity Bolt Size (in.) .........................................................................................................................3/8
Free Speed (no load) (RPM)........................................................................................................... 10,000
Maximum Torque (ft./lbs.)......................................................................................................................75
Required Air Pressure (PSI)...................................................................................................................90
Average Air Consumption (CFM).............................................................................................................6
Air Inlet Diameter (in.)................................................................................................................... 1/4 NPT
Air Hose Inside Diameter (in.)...............................................................................................................3/8
Vibration Value (m/s2)......................................................................................(according to EN12096) 5.9
Overall Length (in.)............................................................................................................................. 7.68
Net Weight (lbs.)................................................................................................................................. 2.21
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, JET reserves the right to change specifications at any time and without prior
notice, without incurring obligations.
Unpacking
Any missing or damaged parts should be
reported to your JET®distributor. Read this
instruction manual thoroughly for operation,
maintenance and safety instructions.
Operation
1. The impact wrench must be properly
lubricated before operating. See
“Maintenance” section for lubricating
instructions.
2. Remove the protective cap from the air inlet,
and connect the air supply hose. Make sure
the air pressure is set to 90psi.
IMPORTANT: Connecting a quick-change
coupling directly to the impact wrench is not
recommended, as vibration may cause the
connection to fail. Instead, add a leader
hose and install any quick-change couplings
farther down the line.
3. The impact wrench has an air regulator dial
(see Figure 1) which varies the amount of
torque exerted on the nut or bolt upon which
you are working. The dial is numbered “0”
through “8”. The lowest setting “0” is
recommended for smaller nuts and bolts.
The “8” setting provides the highest amount
of torque and speed.
Make sure the nut or bolt can
withstand the impact wrench’s working
torque of 75 ft. lbs.
Figure 1

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To loosen a nut or bolt:
1. Attach the correct size socket (not provided)
to the anvil.
2. Set the air pressure to 90 psi.
3. Place the socket over the nut to loosen. Grip
the tool firmly and press the switch in
REVERSE direction to start the tool.
IMPORTANT: If the tool cannot loosen the
nut, DO NOT raise the outlet pressure of the
air compressor above 90 psi. If the tool’s air
regulator is in a low setting, you may raise
the setting and try again. If the tool’s
regulator is already on the “8” setting, do
not continue attempts to loosen the nut
with this impact wrench. Use other
methods or tools to loosen the nut.
4. When the nut is removed, stop the wrench
by releasing the trigger, and remove the nut
from the socket.
To tighten a nut or bolt:
1. Tighten the nut or bolt as far as you can by
hand.
2. Place the socket on the nut and press the
switch lever in FORWARD direction to start
the tool.
IMPORTANT: If the tool stalls while
tightening, DO NOT raise the outlet pressure
of the air compressor above 90 psi. If the
tool’s air regulator is in a low setting, you
may raise the setting and try again. If the
nut will not tighten on the maximum
setting, do not continue attempts to
tighten the nut with this impact wrench.
Use other methods or tools to loosen the
nut.
3. When the nut has been tightened, remove
the tool and socket. Do not overtighten. If
available, check the recommended torque
specifications for the nut. You should use a
torque wrench to torque the nut after using
the impact wrench.
Maintenance
The impact wrench should be lubricated daily (or
before each use) with air tool oil through the air
inlet. During continual operation, it should be re-
oiled every 1 to 2 hours. This can be done either
with an in-line oiler, or manually. If done
manually, proceed as follows:
1. Disconnect the air hose from the impact
wrench.
2. Place four or five drops of air tool oil* into
the air inlet (see Figure 2).
[*NOTE: Air tool oil not provided. It may be
purchased from your JET dealer, or is available
at most major hardware and tool stores. SAE
#10 weight oil or sewing machine oil may be
used as a substitute. Do not use detergent oil.]
Figure 2
3. Re-connect the air. Run the impact wrench
without load for a few seconds to distribute
the oil throughout the tool.
4. When you are finished operating the impact
wrench, before storing it disconnect the air
hose and place 4 or 5 drops of air tool oil
into the air inlet; re-connect the air and run
the tool for a few seconds to distribute the
oil.
5. Avoid storing the impact wrench in very
humid locations which promotes rusting of
internal mechanisms, and always oil it
before storage.
Air Connection
1. Make sure that the air compressor supplies
clean air at the correct CFM for the die
grinder.
2. Set air pressure to 90 psi.
Excessive air pressure
and/or unclean air will shorten the tool’s life
and may create a hazardous situation.
3. Drain the water from the air compressor tank
daily, as well as any condensation from the
air lines. Water in the air line may enter the
tool and cause damage.
4. Change filters on the air system on a regular
basis.
5. Air line pressure should be increased
accordingly to compensate for extra long air
hoses (usually over 25 feet). Inside diameter
of the hose should be a minimum of 3/8”.

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Troubleshooting
Trouble Probable Cause Remedy
Impact Wrench does
not operate at normal
speed.
Air pressure is too low. Adjust air pressure to 90psi.
Air lines are twisted, or there is a
blockage in them. Untwist or clean out air lines.
Air compressor is malfunctioning, or is
not sufficient capacity for the tool. Replace air compressor.
Air regulator is malfunctioning. Have regulator repaired or replaced at
an authorized service center.
Stops operating.
No air pressure. Check air compressor and hoses. Make sure compressor is set at 90psi,
and air lines are not twisted.
Trigger or throttle valve is
malfunctioning. Have throttle valve/trigger inspected
and repaired at an authorized service
center.
Torque is diminished. Air leakage. Check connections at the air inlet, o-
rings, etc. Make adjustments/repairs
as needed.
Starts immediately as
soon as air is
connected without
trigger being pressed.
Throttle valve or trigger are
malfunctioning. Inspect and repair throttle valve and/or trigger.
Abnormal vibration
and/or excessive
heat develops in the
tool.
Improper lubrication. Lubricate properly according to
instructions in this manual.
To order parts or reach our service department, call 1-800-274-6848 Monday through Friday (see our
website for business hours, www.jettools.com). Having the Model Number and Serial Number of your tool
available when you call will allow us to serve you quickly and accurately.

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Record your purchase information here for quick reference:
Stock No.: Serial No.:
Purchased From: Date Purchased:
427 New Sanford Road
LaVergne, Tennessee 37086
Phone: [phone]
www.jettools.com