Pneumatic Reversible Drill #505620, JAT-620 s/n 15050245 and higher #505621, JAT-621 s/n 15050301 and higher JAT-621 shown Operation & Parts Manual M-505620 Edition 4 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-620 and JAT-621 Pneumatic Drill. 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-620 JAT-621 Stock number 505620 505621 Chuck size and type 3/8 in. industrial Jacobs, keyed 1/2 in. industrial Jacobs, keyed Horsepower 1/2 1/2 Spindle thread 3/8”-24 UNF 3/8”-24 UNF Free speed 1800 RPM 800 RPM Average air consumption 4 CFM 4 CFM Air inlet 1/4 in. NPT 1/4 in. NPT Air hose inside diameter 3/8 in. 3/8 in. Required air pressure 90 psi (621 kPa) 90 psi (621 kPa) Vibration value 0.4 m/s2 0.
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. 1. Remove protective cap from air inlet (Figure 1). If an in-line oiler is not being used, add 4 or 5 drops of air tool oil (not included) into the air inlet. 2. Blow out air line to remove any dirt or moisture, then connect air supply hose to tool. Set air pressure to 90 psi.
3. Re-connect air. Run drill at low throttle without load for a few seconds to distribute the oil throughout tool. 4. When finished operating drill, 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 tool for a few seconds to distribute the oil. Disconnect air. Storage Avoid storing the drill in very humid locations which promotes rusting of internal mechanisms. Always oil the tool and disconnect air hose before storage.
Recycling 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.
Troubleshooting JAT-620/621 Drill 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. Rotor vanes or other 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.
#505620, JAT-620, 3/8-inch Pneumatic Drill – exploded view 12 JAT-620,621 Pneumatic Drill
#505620, JAT-620, 3/8-inch Pneumatic Drill – parts list Index 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Part No. JAT620-01A 80202 70103 JAT620-04 JAT620-05 80206 80211 JAT620-08 80209 80210 JAT620-11 SM-70534 BB-626ZZ 80214 80215 80216 JSM7572-17 JAT610-18 80219 Description Motor housing Spring pin 2.5x24L Air inlet Trigger Valve stem Reverse bushing Motor gasket Valve spring O-Ring 12x1.
#505621, JAT-621, 1/2-inch Pneumatic Drill – exploded view 14 JAT-620,621 Pneumatic Drill
#505621, JAT-621, 1/2-inch Pneumatic Drill – parts list Index 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Part No. JAT620-01A 80202 70103 JAT620-04 JAT620-05 80206 80209 JAT620-08 SM-70436 80210 JAT620-11 80247 BB-626ZZ 80214 80215 80216 JSM7572-17 JAT610-18 80219 SM-70420 Description Motor housing Spring pin 2.5x24L Air inlet Trigger Valve stem Reverse bushing O-Ring 12x1.6 Valve spring Clamp nut Reverse lever Exhaust diffuser O-Ring 13.
427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
