Pneumatic Hammer #505900, JAT-900 #505901, JAT-901 #505902, JAT-902 JAT-901 shown Operation & Parts Manual M-505900 Edition 3 11/2018 JET 427 New Sanford Road LaVergne, TN 37086 Ph.: 800-274-6848 www.jettools.
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.
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 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.
25. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts that can result in serious injury. 26. 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 more safely. 27. Repetitive motions and/or exposure to constant vibration can be harmful to hands and arms. Take frequent breaks and relax hands during extended operation. Change posture to avoid discomfort or fatigue. 28.
About this manual This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model JAT-900, JAT-901 and JAT-902 Pneumatic Hammer. 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 number JAT-900 JAT-901 JAT-902 Stock number 505900 505901 505902 Retainer style Coil spring Coil spring Coil spring Stroke length 1-5/8 in. 2-5/8 in. 3-1/2 in. Bore size 3/4 in. 3/4 in. 3/4 in. Shank size 0.401 in. Parker 0.401 in. Parker 0.401 in. Parker Blows per minute 5000 3200 2000 Average air consumption 3 CFM 3 CFM 3 CFM Air inlet 1/4 in. NPT 1/4 in. NPT 1/4 in. NPT Air hose inside diameter 3/8 in. 3/8 in. 3/8 in.
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 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. 5. Adjust speed with air regulator knob. Box contents: 6.
3. Re-connect air. Run air hammer at low throttle without load for a few seconds to distribute the oil throughout tool. 4. When finished operating air hammer, disconnect air hose. Wipe off housing with a dry cloth. Place 4 or 5 drops of air tool oil into air inlet; re-connect air and run the tool for a few seconds to distribute the oil. Disconnect air. Storage Avoid storing the air hammer in very humid locations which promotes rusting of internal mechanisms.
Lubrication Recycling Use a light oil containing rust inhibitors, such as SAE #10. Many JET air tools have integral oil reservoirs, which should be kept filled when in-line oilers are not used. Protect the environment. Your tool contains materials which can be recovered or recycled. When its useful life has expired, please leave tool at a specialized facility. If greasing is required, use a grease that is highly water resistant for the front case components on air impact wrenches, grinders and sanders.
Troubleshooting JAT-900/901/902 Pneumatic Hammer 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 Possible cause Remedy Tool will not start. 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. Internal components are worn.
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.
#505900, JAT-900 Pneumatic Hammer – parts breakdown Index 1 2 3 4 5 6 7 8 Part No. JAT900-01 AH-18 AH-4 AH-8 AH-6X AH-17 AH-9 AH-5 Description Housing Regulator Hose adaptor Trigger Throttle valve stem 30.6mm O-Ring 7.8x1.9 Steel ball seat Throttle spring RBK-0101R Rebuild Kit, contains 5,7,8,11,15 12 JAT-900,901,902 Pneumatic Hammer Qty 1 1 1 1 1 2 1 1 Index 9 11 13 14 15 17 18 Part No. AH-7 AH-10A AH-2X AH-3X AH-15-1A AH-19 J0101S JSG-1304 Description Qty O-Ring 2x1.
#505901, JAT-901 Pneumatic Hammer – parts breakdown Index 1 2 3 4 5 6 7 8 Part No. JAT901-01 AH-18 AH-4 AH-8 AH-6X AH-17 AH-9 AH-5 Description Housing Regulator Hose adaptor Trigger Throttle valve stem 30.6mm O-Ring 7.8x1.9 Steel ball seat Throttle spring Qty 1 1 1 1 1 2 1 1 Index 9 11 13 14 15 17 18 Part No. AH-7 AH-10A AH-2X AH-3X AH-15-2A AH-19 J0101S JSG-1304 Description Qty O-Ring 2x1.5 2 Valve assembly 1 Pin (for trigger) 3x14 1 Pin (for regulator) 3x16 1 Cylinder assembly (incl.
#505902, JAT-902 Pneumatic Hammer – parts breakdown Index 1 2 3 4 5 6 7 8 Part No. JAT901-01 AH-18 AH-4 AH-8 AH-6X AH-17 AH-9 AH-5 Description Housing Regulator Hose adaptor Trigger Throttle valve stem 30.6mm O-Ring 7.8x1.9 Steel ball seat Throttle spring Qty 1 1 1 1 1 2 1 1 RBK-0304R Rebuild Kit, contains 5,7,8,11,15 14 JAT-900,901,902 Pneumatic Hammer Index 9 11 13 14 15 17 18 Part No. AH-7 AH-10A AH-2X AH-3X AH-15-3A AH-19 J0101S JSG-1304 Description Qty O-Ring 2x1.
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427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
