JET JAT-102 1/2-inch Pneumatic Impact Wrench

Warranty and Service

JET warrants every product it sells against manufacturers' defects. For service or repair, contact Technical Service by calling 1-800-274-6846, 8 AM to 5 PM CST, Monday through Friday.

Warranty Period: The general warranty lasts for the time period specified in the product literature or on the official JET website. JET products carry a limited warranty that varies in duration. Accessories have a one-year limited warranty from the date of receipt. Consumable items are covered by a 90-day limited warranty against manufacturer's defects.

Who is Covered: This warranty covers only the initial purchaser from the date of delivery.

What is Covered: This warranty covers any defects in workmanship or materials, subject to limitations. It does not cover failures due to misuse, abuse, negligence, accidents, normal wear-and-tear, improper repair, alterations, or lack of maintenance. Use of JET woodworking machinery with materials other than wood (exceptions apply) may void the warranty.

Warranty Limitations: Woodworking products with a Five-Year Warranty used for commercial or industrial purposes default to a Two-Year Warranty. Contact Technical Service for clarification.

How to Get Technical Support: Contact Technical Service at 1-800-274-6846. Proof of initial purchase is required. Authorized Service Centers are located throughout the United States; call the number above or use the Service Center Locator on the JET website.

More Information: For complete, up-to-date product information, contact your local distributor or visit the JET website.

How State Law Applies: This warranty grants specific legal rights, subject to applicable state law. Limitations on Implied Warranties: JET limits all implied warranties to the duration of the limited warranty for each product. 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.

Liability Limitations: JET shall not be liable for death, injuries to persons or property, or for incidental, contingent, special, or consequential damages arising from the use of its products. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply.

JET sells through distributors only. Specifications are general information and not binding. JET reserves the right to make alterations to parts, fittings, and accessory equipment without prior notice.

Product Listing with Warranty Period

NOTE: JET is a division of JPW Industries, Inc. References to JET also apply to JPW Industries, Inc., or its successors.

Safety Warnings

General Air Tool Warnings

1. Read and understand this entire manual before attempting assembly or operation.
2. Read and understand all warnings posted on the tool and in this manual. Failure to comply may cause serious injury.
3. Replace warning labels if they become obscured or removed.
4. Do not use this tool for other than its intended use. JET disclaims any warranty and holds itself harmless from injury resulting from misuse.
5. Always wear approved safety glasses or face shield. (Everyday eyeglasses are not safety glasses.)
6. Wear ear protectors if noise exceeds safe levels.
7. Wear gloves and protective clothing if sparks or flying particles are produced. Keep hands and body away from the working area.
8. Do not operate an air tool continually at full throttle without a work load.
9. The air tool must be properly lubricated before operating.
10. Never start a percussion type air tool without securing the tooling and placing the tip against the work surface.
11. Do not operate air tool without guards in place. Do not modify the tool.
12. Do not operate this tool while tired or under the influence of drugs, alcohol, or medication.
13. Adopt a comfortable posture with proper balance and maintain secure footing. Non-slip footwear or anti-skid floor strips are recommended.
14. Do not wear loose clothing or jewelry. Confine long hair.
15. Excessive air pressure and too much free rotation may decrease tool life and cause a hazardous situation.
16. Check air hoses for wear, and keep them away from heat and sharp edges. Repair or replace damaged hoses immediately. Do not carry tool by the air hose.
17. Air hose may cause tripping hazards; keep hose away from traffic areas.
18. Do not use this tool near flammable objects or in potentially explosive environments. Do not use near live electrical wires.
19. Do not use power tools in damp or wet locations, or expose them to rain. Keep work area well lighted.
20. Do not leave a connected tool unattended. When not in use, disconnect tool from air source.
21. Shut off air supply and discharge any residual pressure before removing hose, making adjustments, changing accessories, or storing tool.
22. Make sure tool is switched off, and your finger off the trigger, before connecting to air supply.
23. Remove adjusting keys and wrenches before turning on tool.
24. Keep visitors a safe distance from the work area. Keep children away.
25. Give your work undivided attention.
26. Do not force a tool or attachment to do a job for which it was not designed.
27. Repetitive motions and/or exposure to constant vibration can be harmful. Take frequent breaks and relax hands. Change posture to avoid discomfort or fatigue.
28. Compressed air can be harmful if directed toward sensitive areas of the body and may propel small particles. Exercise proper caution.
29. Use only recommended accessories; improper accessories may be hazardous.
30. Maintain tools with care. Keep air tool clean and oiled for best and safest performance.
31. Do not use combustible gases, carbon dioxide, oxygen, or any bottled gas as an air source. These can present a risk of explosion and serious injury.
32. Do not lubricate the tool with combustible liquids, such as kerosene, diesel, or jet fuel.
33. Do not dispose of this tool with normal household waste. Never dispose of the air tool into fire.

Specific Warnings for Impact Wrench

34. This impact wrench is designed for removing and installing threaded fasteners. If unfamiliar with proper and safe operation, do not use until proper training and knowledge have been obtained.
35. Use only impact sockets in good condition. Sockets in poor condition may reduce impact power and could break, creating a safety hazard.
36. Use only sockets designated for use with impact wrenches. Never use hand tool sockets, as they can shatter.
37. Never hold socket, drive, or drive extension with your hand during operation.
38. Make sure workpiece is secure and will not shift while operating impact wrench. Do not hold workpieces with your hand.
39. Make sure fastener can withstand rated torque of impact wrench.

WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to http://www.p65warnings.ca.gov/.

WARNING: Some dust, fumes, and gases created by power sanding, sawing, grinding, drilling, welding, and other construction activities contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Examples include lead from lead-based paint, crystalline silica from bricks/cement, and arsenic/chromium from chemically treated lumber. Your risk of exposure varies. To reduce exposure, work in a well-ventilated area and use approved safety equipment, such as dust masks designed for microscopic particles. For more information go to http://www.p65warnings.ca.gov/ and http://www.p65warnings.ca.gov/wood.

Familiarize yourself with the following safety notices used in this manual:

WARNING: This means that if precautions are not heeded, it may result in serious, or even fatal, injury.

NOTE: This means that if precautions are not heeded, it may result in minor injury and/or possible tool damage.

About This Manual

This manual provides instructions for the safe operation and maintenance of the JET Model JAT-102 Pneumatic Impact Wrench. It covers safety precautions, general operating procedures, maintenance, and parts breakdown. The tool is designed for consistent, long-term operation when used as instructed. The instructions and warnings may not cover all possible workplace environments; operators are expected to take appropriate precautions and use common sense. Operator and bystander safety should be the first priority. For questions or comments, contact your local supplier or JET via their website: www.jettools.com. Record the serial number and purchase information for quick access. Retain this manual for future reference and include it if the tool transfers ownership.

Tool Specifications

¹ The specified values are emission levels and are not necessarily to be seen as safe operating levels. As workplace conditions vary, this information is intended to allow the user to make a better estimation of the hazards and risks involved only.

Specifications were current at time of publication, but because of JET's policy of continuous improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring obligations.

Setup and Assembly

Report any missing or damaged parts immediately to your JET distributor. Do not use a damaged tool. Read this instruction manual thoroughly for operation, maintenance, and safety instructions.

Box Contents:

• 1 Impact wrench
• 1 Operation and parts manual
• 1 Warranty card

Operation Preparation

The impact wrench must be properly lubricated before operation. See "Maintenance" section.

Initial Setup:

1. Remove the protective cap from the air inlet. If an in-line oiler is not used, add 4 or 5 drops of air tool oil (not included) into the air inlet.
2. Blow out the air line to remove dirt or moisture, then connect the air supply hose to the tool. Set air pressure to 90 psi.
   IMPORTANT: Connecting a quick-change coupling directly to the tool is not recommended, as vibration may cause the connection to fail. Instead, add a leader hose and install quick-change couplings farther down the line.
3. Push a socket (not included) onto the anvil until it clicks into position.

Operation

Selecting Rotation and Speed:

1. Push the direction pin to select forward [▶️] or reverse [◀️] rotation.
2. Push in and rotate the regulator dial to the preferred speed setting. Regulator settings are for reference only and do not indicate specific power settings.

Ensure the nut or bolt can withstand the rated torque of the impact wrench.

To Loosen a Nut or Bolt:

1. Select reverse rotation [◀️].
2. Place the socket over the nut, hold the grip firmly, and place your other hand over the top of the housing. Gently squeeze the trigger.
3. Release the trigger to stop the impact wrench.

Important: If the tool cannot loosen the nut, DO NOT raise air pressure above 90 psi. If the tool's air regulator is set low, increase the setting and retry. If the regulator is already at maximum, do not continue attempts to loosen the nut with this impact wrench. Use other methods or tools.

To Tighten a Nut or Bolt:

1. Install the nut as far as possible by hand.
2. Select forward rotation [▶️].
3. Place the socket over the nut, hold the grip firmly, and place your other hand over the top of the housing. Gently squeeze the trigger.
4. Release the trigger to stop the impact wrench.

Important: If the tool stalls while tightening, DO NOT raise air pressure above 90 psi. If the tool's air regulator is set low, increase the setting and retry. 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.

NOTE: Do not overtighten. Fasteners with critical torque settings should be fully tightened with a torque wrench.

Maintenance

Lubrication

The impact wrench should be lubricated daily (or before each use) with air tool oil through the air inlet. During continuous operation, re-oil every 1 to 2 hours. This can be done with an in-line oiler or manually.

Manual Lubrication:

1. Disconnect the air hose from the tool.
2. Place 4 or 5 drops of air tool oil into the air inlet.
3. Re-connect the air. Run the impact wrench at low throttle without load for a few seconds to distribute the oil throughout the tool.
4. When finished operating, disconnect the air hose. Wipe off the housing with a dry cloth. Place 4 or 5 drops of air tool oil into the air inlet; re-connect air and run the tool for a few seconds to distribute the oil. Disconnect air.

NOTE: Air tool oil is not provided; it is available at most major hardware and tool stores. SAE #10 oil or sewing machine oil may be used as a substitute. Do not use detergent oil.

Weekly: Remove the set screw from the oil inlet and insert several drops of air tool oil. Reinstall the set screw.

Storage

Avoid storing the impact wrench in very humid locations, which promotes rusting of internal mechanisms. Always oil the tool and disconnect the air hose before storage.

Air System Requirements

1. Use proper air hose size (refer to tool specifications). The hose should be just long enough to serve the working area. Excessive hose length causes pressure drop.
2. Ensure the air compressor supplies clean, dry air at the correct CFM for the impact wrench.
3. Set air pressure to 90 psi.
4. Drain water from the air compressor tank daily, as well as any condensation from air lines. Water in the air line can damage the tool.
5. Change filters on the air system regularly.
6. Air-line pressure may be increased to compensate for extra-long air hoses (usually over 25 feet). The inside diameter of the hose should be a minimum of 3/8-inch.

Excess air pressure and/or unclean air will shorten the tool's life and may create a hazardous situation.

General Air Tool Information

If the air tool is not performing according to specifications, common causes include:

• Contaminated air (dirty system or water).
• Using the wrong size tool for the job.
• Poor maintenance practices (e.g., excessive air pressure or volume).
• Improper or no lubrication.

Rule of Thumb

If it takes more than 8 seconds to tighten or loosen a bolt or nut with an air impact wrench at maximum setting, the wrench may be too small or the air compressor CFM insufficient. Continued use in either capacity will damage the tool.

Tool Pressure

JET Air Tools operate on 70-to-100 psi (pounds per square inch) air pressure measured at the tool when operating. Set the tool to 90 psi unless otherwise indicated. Pressure exceeding 100 psi will shorten tool life.

Air System Recommendations

• Equip the air compressor intake with a replaceable, easily cleaned air filter.
• Use safety shut-off valves for quick air flow stoppage in case of a line break.
• When using multiple hoses, they should be larger than the leader hose. Join multiple hoses directly, rather than with quick connect fittings, which can cause pressure drops and power reduction.
• Use anti-whip devices across hose couplings to prevent hose whipping if a hose fails or coupling disconnects.
• Always use moisture traps at the compressor for the main distribution line. Use moisture traps and in-line oilers on each downline used for air tools. Place the oiler as close to the air tool as possible for best lubrication.

Lubrication

Use a light oil containing rust inhibitors, such as SAE #10. Many JET air tools have integral oil reservoirs that should be kept filled if in-line oilers are not used.

If greasing is required, use a highly water-resistant grease for the front case components on air impact wrenches, grinders, and sanders.

Recycling

Protect the environment. Your tool contains materials that can be recovered or recycled. When its useful life expires, please leave the tool at a specialized facility.

Troubleshooting

Any disassembly of the tool should be done by qualified service personnel. For problems not addressed below, contact JET technical service at 800-274-6846.

Replacement Parts

Service parts are listed on the following pages. To order parts or reach the service department, call 1-800-274-6846 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Please have the stock number and serial number of your tool available when calling for quick and accurate service.

Exploded View Diagram

The following diagram provides a visual breakdown of the JAT-102 Impact Wrench components. Refer to the parts list for detailed descriptions and part numbers.

[Description of the visual layout of the exploded view: The diagram shows the impact wrench disassembled into its constituent parts, numbered for reference. Components are arranged radially around the central drive mechanism and motor housing, illustrating how they fit together.]

Parts List

Repair Kit: JAT102-RPK (contains 3, 5, 16(6), 33)

Rebuild Kit: JAT102-RBK (contains 2, 10, 14, 17(2), 18, 19, 45)

Additional Information

The original document contained pages intentionally left blank for formatting or printing purposes.