This .pdf document is bookmarked Operating Instructions and Parts Manual Belt (2x42”) and Disc (8”) Sander Model J-41002 JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com 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.
Table of Contents Warranty and Service .............................................................................................................................. 2 Table of Contents .................................................................................................................................... 3 Warning................................................................................................................................................... 4 Introduction .....................
Warning 1. Read and understand the entire owner’s manual before attempting assembly or operation. 2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of these warnings may cause serious injury. 3. Replace the warning labels if they become obscured or removed. 4. This sander is designed and intended for use by properly trained and experienced personnel only.
21. Make your workshop child proof with padlocks, master switches or by removing starter keys. 22. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts that can result in serious injury. 23. Maintain a balanced stance at all times so that you do not fall or lean against the abrasives or other moving parts. Do not overreach or use excessive force to perform any machine operation. 24. Use the right tool at the correct speed and feed rate.
Introduction This manual is provided by JET covering the safe operation and maintenance procedures for a JET 2x42x8 Belt and Disc Sander. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. This machine has been designed and constructed to provide consistent, long-term operation if used in accordance with instructions set forth in this manual.
Features and Terminology 7
Contents of the Shipping Container Unpacking 1 1 1 1 1 6 3 3 1 1 3 1 1 Open shipping container and check for shipping damage. Report any damage immediately to your distributor and shipping agent. Do not discard any shipping material until the sander is assembled and running properly. Compare the contents of your container with the following parts list to make sure all parts are intact. Missing parts, if any, should be reported to your distributor.
Assembly Tools needed for assembly: • 10mm open-end wrench • Cross-point (Phillips) screwdriver • Combination square, or similar measuring device. angle Sander must be unplugged from power source during assembly. Remove the protective coating from the surfaces of the sander and from any loose parts. This coating may be removed with a soft cloth moistened with kerosene (do not use acetone, gasoline or lacquer thinner for this purpose). After cleaning, cover the table surfaces with a good quality paste wax.
Installing Disc Table 1. Position the disc table at an angle, as shown in Figure 3, and slide the table on so that the trunnion slots fit over the raised tracks on the disc guard. 2. Install a flat washer onto each of the two remaining handles. Insert the handle into the holes through the left and right trunnions. See Figure 4. 3. The gap between the sanding disc and the disc table should be a maximum of 1/16”.
Grounding Instructions This machine must be grounded while in use to protect the operator from electric shock. In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This tool is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be inserted into a matching receptacle that is properly installed and grounded in accordance with all local codes and ordinances.
Adjustments Tilting the Belt Table The belt table tilts from zero (horizontal) down to 45°. 1. Loosen the handle and adjust the table into desired position. 2. Check the angle with a machinist’s protractor or similar measuring device that has the required angle. Figure 10 shows a square being used to confirm the zero, or horizontal, position. Place the square flat on the table and against the belt. Push against the belt until the square is against the platen. 3.
Use of the Miter Gauge The miter gauge is used to sand accurate angles on workpieces. When using the miter gauge on the horizontal table position, you can sand a single angle. By tilting the disc table and using the miter gauge in combination with the table tilted, it is possible to sand compound angles as well. The miter gauge rotates to 30° for bevel sanding. Loosen the knob and rotate the gauge body until the pointer lines up with the desired angle on the scale.
Abrasive Belt Replacement 1. Unplug the Sander from the power source. 2. Unscrew and remove the two knobs on the belt cover. 3. Remove the belt cover. 4. Rotate the tension handle (Figure 6) to loosen the belt, and remove the old belt from around the wheels. 5. Install the new belt around the wheels. IMPORTANT: Some sanding belts have a directional arrow printed on the inside of the belt.
Abrasive Disc Replacement 1. Unplug the sander from the power source. 2. Remove the dust cover and the disc table. To remove the disc table, remove the handles then tilt the disc table upward while pulling it away from the disc. 3. Peel off the old abrasive disc. 4. Thoroughly clean the aluminum disc surface using naptha or a similar non-flammable solvent that will dry film-free. 5. Pull the protective backing half-way off the new abrasive disc. 6.
Operation This sander is intended for dry sanding of metals. Do not use lubricants. Do not sand or polish magnesium; it may create a fire hazard. Also, do not sand very small or very thin workpieces that cannot be safely controlled. Starting and Stopping the Sander The on/off switch is located on the side of the motor housing. Move the switch upward to the ON position to start the sander. Move the switch downward to the OFF position to stop the sander.
2. Tighten the miter gauge securely so the miter reference angle will not shift while you are sanding. 3. Place the workpiece against the miter reference surface and slide it along the miter reference surface and into the sanding disc. The following are just some of the many operations that can be performed with your JET Sander. • Sharpening a wood chisel on the sanding belt using a block of wood. Use the block of wood to support the chisel and provide clearance for the chisel handle. See Figure 18.
Maintenance Check all fasteners for tightness. Before performing any maintenance on the machine, disconnect it from the electrical supply by pulling out the plug or switching off the main switch. Failure to comply may cause serious injury. Inspect the power cord; if worn, cut, or damaged in any way, have it replaced immediately. Inspect the abrasive belt and disc. If either is worn, replace it. Keep the table surfaces clean and free of rust.
Troubleshooting Trouble Probable Cause Remedy Not connected to power source. Connect to power source. Branch circuit fuse is blown or the circuit breaker is tripped. Determine reason for blown fuse/ tripped breaker (such as short circuit or motor overload). Correct reason for fault. Replace fuse/ reset circuit breaker. Voltage is too low. Check power source for proper voltage. Switch is defective. Replace switch. Motor failure. Replace motor. Motor stalls easily. Low voltage.
Assembly Drawing 20
Parts List Index No. Part No. Description Size Qty 1............... J-41002-01G ............Base ...................................................................................................... 1 2............... TS-0680042 .............Flat Washer ........................................................3/8”............................. 2 3............... TS-1551031 .............Lock Washer ......................................................M5 .............................. 4 4...............
Parts List 57 ............. TS-1505021 .............Socket Head Cap Screw.....................................M10x20 ...................... 2 58 ............. J-41002-58G ............Belt Housing .......................................................................................... 1 59 ............. TS-0680031 .............Flat Washer ........................................................5/16”........................... 4 60 ............. TS-0570011 .............Hex Nut ..............................
Notes 23
427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.
