Pneumatic Mini Belt Sander #505750, JAT-750 #505751, JAT-751 #505752, JAT-752 JAT-750 JAT-752 JAT-751 Operation & Parts Manual M-505750 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-750, JAT-751 and JAT-752 Pneumatic Mini Belt Sander. 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-750 JAT-751 JAT-752 Stock number 505750 Belt size 3/8 x 13 in. 505751 3/4 x 20-1/2 in. 505752 1/2 x 24 in. Horsepower 0.5 0.6 0.5 Head rotation 360 deg. 360 deg. 360 deg. Free speed 20,000 RPM 18,000 20,000 Average air consumption 4.2 CFM 4.2 CFM 4.2 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.
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. 2. Remove protective cap from air inlet. If an inline oiler is not being used, add 4 or 5 drops of air tool oil (not included) into the air inlet. 3. Blow out air line to remove any dirt or moisture, then connect air supply hose to tool. Set air pressure to 90 psi.
Figure 2 Figure 4: JAT-750 JAT-751: Insert hex wrench into hex socket cap screw and turn clockwise or counterclockwise until belt is centered on idle pulley. See Figure 4. JAT-751: 1. Disconnect sander from air source. 2. Loosen hex cap screw (see Figure 1), turn head 90-degrees to the handle, and tighten screw to lock. 3. Steady sander with one hand, while pushing down on idle pulley assembly and removing belt. 4. Install new belt over pulleys. 5. Release pressure on idle pulley to tension belt.
3. Steady sander with one hand. Push down on idle pulley assembly and turn 1/8 of a full turn clockwise to lock in place. See Figure 6. 4. Remove old belt. Install new belt. 5. Rotate idle pulley assembly clockwise to engage tension. counter- Figure 7 Idle pulley replacement Disconnect sander from air hose before making any repair or adjustment. Figure 6: JAT-752 Follow Figure 8 for your sander model when replacing the idle pulley.
Tension bar replacement 4. JAT-750/752: 1. Disconnect sander from air source. 2. Remove belt. 3. Pull out tension bar from housing, Figure 9. Be careful not to lose spring. 4. Insert new tension bar by lining up pin with pin groove. See Figure 9. When finished operating tool, 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.
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 air wrench is too small or the air compressor CFM is not powerful enough for the job. Continued use in either capacity will cause damage to the tool. Tool Pressure JET Air Tools operate on 70-to-100 psi (pounds per square inch) air pressure measured at the tool when the tool is operating. Set tool to 90 psi unless indicated otherwise.
Troubleshooting JAT-750/751/752 Belt Sanders 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 Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800-274-6848 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.
#505750, JAT-750, Mini Belt Sander – exploded view 61 58 59 28 4 15 52 3 17 48 47 18 50 49 12 13 54 55 19 20 14 56 54 55 1 5 27 57 16 7 8 53 33 38 33 10 6 2 30 14 9 25 41 51 46 21 34 60 62 36 11 40 39 32 31 43 45 42 35 24 37 JAT-750/751/752 Mini Belt Sanders 44 29 26 22 23
#505750, JAT-750, Mini Belt Sander – parts list Index Part No. 1 JAT750-01 2 JAT750-02 JAT750-02A 3 JSM6100-03 4 JSM6100-04 Description Housing (incl. #46 grip) Guard Guard subassembly (w/#26) Air inlet Throttle lever Throttle lever assembly JSM6100-04A (incl. #4,47,48,49) 5 JSM6100-05 Valve stem 6 JSM6100-06 Valve 7 SM-30107 O-Ring 3.9x1.9 8 JSM6100-08 Spring 9 JSM6100-09 O-Ring 14.5x1.
#505751, JAT-751, Mini Belt Sander – exploded view 45 43 40 15 17 16 30 39 48 12 31 36 21 19 32 37 42 53 51 4 36 44 41 43 52 46 13 20 14 28 35 38 18 2 33 25 50 29 34 1 47 58 22 49 57 5 23 7 25 24 26 8 6 27 9 10 11 54 55 56 16 JAT-750/751/752 Mini Belt Sanders 3
#505751, JAT-751, Mini Belt Sander – parts list Index Part No. 1 JAT751-01 2 JAT751-02 JAT751-02A 3 JSM6100-03 4 JSM6100-04 JSM610004A 5 JSM6100-05 6 JSM6100-06 7 SM-30107 8 JSM6100-08 9 JSM6100-09 10 JSM6100-10 11 JSM6100-11 12 JAT751-12 13 BB-608ZZ 14 JAT751-14 15 JAT751-15 16 JAT751-16 17 JAT751-17 18 JAT751-18 19 JAT751-19 20 BB-6000ZZ 21 JAT751-21 22 JAT751-22 23 TS-1541041 24 JAT751-24 25 JHM610-54 26 JAT751-26 27 JAT751-27 28 JSM6100-27 Description Qty Housing (incl.
#505752, JAT-752, Mini Belt Sander – exploded view 38 39 43 46 48 56 38 37 45 4 35 57 55 44 33 49 15 17 32 41 36 16 34 42 12 19 40 30 21 20 13 31 14 25 47 18 1 60 22 58 2 24 5 23 27 59 7 26 54 53 9 28 8 29 10 6 32 32 18 JAT-750/751/752 Mini Belt Sanders 11 50 51 52 3
#505752, JAT-752, Mini Belt Sander – parts list Index Part No. 1 JAT750-01 2 JAT750-02 JAT750-02A 3 JSM6100-03 4 JSM6100-04 Description Qty Housing (incl. #58 grip) 1 Guard 1 Guard Subassembly (w/#26) Air inlet 1 Throttle lever 1 Throttle lever assembly JSM6100-04A 1 (incl. #4,55,56,57) 5 JSM6100-05 Valve stem 1 6 JSM6100-06 Valve 1 7 SM-30107 O-Ring 3.9x1.9 1 8 JSM6100-08 Spring 1 9 JSM6100-09 O-Ring 14.5x1.
427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
