Pneumatic Impact Wrench #505128, JAT-128 Operation & Parts Manual M-505128 Edition 1 02/2020 JET 427 New Sanford Road LaVergne, TN 37086 Ph.: 800-274-6848 www.jettools.
IMPORTANT SAFETY INSTRUCTIONS 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 with all of these warnings 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.
24. Keep visitors a safe distance from the work area. Keep children away. 37. Never hold socket, drive or drive extension with your hand during operation. 25. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts that can result in serious injury. 38. Make sure workpiece is secure and will not shift while operating impact wrench. Do not hold workpieces with your hand. 26.
About this manual This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model JAT-128 Pneumatic Impact Wrench. This manual contains instructions on safety precautions, general operating procedures, maintenance procedures and parts breakdown. Your tool has been designed and constructed to provide consistent, long-term operation if used in accordance with the instructions set forth in this document.
Tool specifications Model Stock number JAT-128 Impact Wrench 505128 Square drive 1 in. Anvil retainer type Ring Impact mechanism Twin hammer Maximum torque 1,400 lbf•ft (1898 N•m) Working torque 240~1100 lbf•ft (325.4~1491.4 N•m) Free speed 5300 RPM Blows per minute 936 Average air consumption 56.24 SCFM; 7.9 CFM at 90psi Actual (under load) air consumption 37.91 SCFM; 5.32 CFM at 90psi Air inlet 3/8 in. NPT Air hose inside diameter 1/2 in.
recommended, as vibration may cause the connection to fail. Instead, add a leader hose and install any quick-change couplings farther down the line. Setup and Assembly Any missing parts or damage should be reported 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 1 1 Impact wrench Operation and parts manual Product registration card Operation 3.
Maintenance 5. Change filters on the air system on a regular basis. Lubrication 6. Air-line pressure may be increased accordingly to compensate for extra-long air hoses (usually over 25 feet). Inside diameter of hose should be minimum 3/8-inch. 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 reoiled every 1 to 2 hours. This can be done with an in-line oiler, or manually.
Use anti-whip devices across hose couplings to prevent hose from whipping in the event of a hose failure or coupling disconnect. If greasing is required, use a grease that is highly water resistant for the front case components on air impact wrenches, grinders and sanders. Always use moisture traps at the compressor for the main distribution line. Use moisture traps and in-line oilers on each downline that is to be used for air tools. (See Figure 2).
Troubleshooting JAT-128 Impact Wrench 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. Problem Tool will not start. Possible cause Remedy Air valve closed or obstructed. Open valve; clear any obstructions. Dirt or gum deposits on components. Flush tool with gum solvent. If problem persists, disassemble, clean and lubricate internal parts. Rotor vanes or other components are worn.
Problem Possible cause Severe air leakage. (Note: Minimal escape of air is often normal for air tools.) Air valve obstructed or damaged. Clean or replace. Housing loose or damaged. Tighten or replace as needed.
Replacement parts Service parts are listed on the following pages. To order parts or reach our service department, call 1-800274-6848 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 you call, so that we may serve you quickly and accurately. Some parts are shown for reference only, and may not be available individually.
#505128, JAT-128, 1-inch Impact Wrench – exploded view 12 JAT-128 Impact Wrench
#505128, JAT-128, 1-inch Impact Wrench – parts list # 101 102 103 104 105 106 107 108 109 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 301 302 303 304 305 306 Part No.
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.
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427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
