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Hersteller: Milwaukee Dateigröße: 327.35 kb Dateiname: 12934_58-14-5426d2.pdf Unterrichtssprache:

drilling rate. If the speed begins to drop off when drilling large or deep holes, pull the bit partially out If a bit binds: of the hole while the tool is running to help clear If the bit should bind, a built in, nonadjustable slip dust. Do not use water to settle the dust since it clutch prevents the bit from turning when the tool will clog the bit flutes and tend to make the bit is held or braced securely. If this occurs bind in the hole. If the bit should bind, a built-in, 1. Turn off and unplug the tool. non-adjustable slip clutch prevents the bit from 2. Free the bit from the workpiece. turning. If this occurs, stop the tool, free the bit and begin again. 3. Clear debris from the hole. Do not let the bit spin in the hole without cutting. Do 4. Begin drilling again. not attempt to drill through steel reinforcing rods. If a hammer iron gets stuck: Both actions will damage the carbide. 1. Unplug the tool. Cold Hammering 2. Pull out bit lock and rotate it 180°. If the hammer is stored for a long period of time or 3. Pull the tool off of the stuck accessory. at cold temperatures, the lubrication may become 4. Remove the accessory from the workpiece. stiff and the tool may not hammer initially or the hammering may be weak. If this happens: Locking Trigger (Cat. No. 5446-21 only) 1. Insert a chisel into the tool. 1. To lock on the trigger, pull the trigger and press 2. Pull the trigger and apply the chisel against the lock button. Release the trigger. scrap piece of concrete. 2. To unlock the trigger, pull and release the trig3. Turn the tool On and Off every few seconds. ger. After 15 seconds to 2 minutes, hammering normally. The colder the hammer is, the longer it will take to 7 Fig. 7 Cut approximately 1/4" deep with a core bit. Fig. 8 Drill a hole through the work. Fig. 9 Dust and debris will fall through the hole. Top view WARNING Use MILWAUKEE core bits. Do not use LHS (Large Hole System) Components with these rotary hammers. The bits could fail, breaking apart at the threaded stud and causing injury and property damage. 5. After drilling to about the depth of the core bit teeth, remove the center pin and guide plate from the core bit. Resume drilling. 6. To change the core bit, hold the tool upwards, pointing it away from your body, and run the tool allowing rotation and impacting for about five seconds to loosen the core bit from the adapter Using Rotary Percussion Core Bits Core bits are useful for drilling larger holes for conduit and pipe. MILWAUKEE Heavy-Duty Core Bits have heat-treated steel bodies with durable carbide tips. These core bits are specially designed for fast, accurate drilling with combined hammering and rotary action. 1. Clean and lubricate the threads on the adapter and core bit to make later removal easier. Screw the threaded end of the adapter into the rear of the core bit. 2. Push the guide plate onto the pointed end of the center pin. Insert the center pin and guide plate assembly into the core bit. Be sure the small end of the center pin is securely placed into the hole in the center of the core bit (Fig. 5). shank. NOTE: To make deeper holes, remove the core bit, break and remove the core. Resume drilling. When drilling long or deep holes, after each inch of penetration pull the bit partially out of the hole while the tool is running, to help clear dust from the bit flutes. Dust can clog the bit flutes and can make the bit bind in the hole. If this occurs, stop the tool, free the bit and begin again. Drilling Large Diameter Holes with Core Bits When drilling holes with large diameter core bits, dust may build up in the cut and can cause the tool to stall, bind, or cut slowly. By creating an opening for the dust to escape, drilling time, bit stress, and tool stress can be reduced. 1. Start the cut as normal. 2. Once the bit is firmly established in the cut (about 1/4" deep), remove the bit from the cut (Fig. 7). 3. Remove the bit from the tool. 4. Install a standard fluted bit, approximately 7/8" in diameter, onto the tool. 3. Insert the adapter into the nose of the tool. Set 5. Drill a perpendicular the action selector to the hammering with rotation hole through the kerf of setting. the large hole (Fig. 8). 4. Press the center pin firmly against your center • Depending on the locamark, hold the tool firmly and pull the trigger. tion of the work, the NOTE: If a center pin and guide plate are not hole should either break through the other side of available, use a template or notched board to start the hole (Fig. 6) . the hole/ floor or extend Fig. 5 Fig. 6 4"-5" past the end of the workpiece (such as into the dirt below a concrete slab) . • If dust builds up in the hole, vacuum it out and continue drilling. • If drilling through a wall, the hole for dust should be drilled on the lowest part of the large hole kerf (Fig. 9) as drilling and can 8 6. Reinstall the core bit and continue drilling (Fig. 9 & 10). Dust and debris will fall through the hole and optimize the cutting abil...

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