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manual abstract
Hammering Only Spline Drive System (Cat. No. 5318-21) When a chisel (or other “hammering-only” accessory) is mounted into the 5318-21 Rotary Hammer, the rotational drive mechanism does not engage with the chisel. Starting and Stopping the Tool 1. To start the tool, pull trigger. 2. To stop the tool, release trigger. Cold Starting If this tool is stored for a long period of time or at cold temperatures, it may not hammer initially because the lubrication has become stiff. To warm up the tool: 1. Insert and lock a bit or chisel into the tool. 2. Turn the tool on, applying force to the bit or chisel against a concrete or wood surface. 3. Turn the tool on and off every few seconds. In a short time, the tool will start hammering. The colder the tool is, the longer it will take to warm it up. Hammering or Hammering with Rotation Position the tool, grasp the handles firmly and pull the trigger. Always hold the tool securely using both handles and maintain control. Use only enough pressure to hold the tool in place and prevent the tip of the bit from wandering. This tool has been designed to achieve top performance with only moderate pressure. Let the tool do the work. When drilling deep holes occasionally pull the bit partially out of the hole while the tool is running to help clear dust. NOTE: Do not use water to settle the dust since it will clog the bit flutes and tend to make the bit bind in the hole. If the bit should bind, a built-in, non-adjustable slip clutch prevents the bit from turning. If this occurs, stop the tool, free the bit and begin again. Using Rotary Percussion Core Bits (Fig. 5-8) Core bits are useful for drilling large 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). To reduce the risk of injury, when using chisels or (other hammering-only accessories) in the 5314-21 Rotary Hammer, set the tool in the “hammering-only” position. Fig. 5 WARNING! page 6 3. Insert the adapter into the nose of the tool as described in “Installing Bits”. Set the stop rotation knob to the hammering-with-rotation setting. 4. Press the center pin firmly against your center mark, hold the tool firmly and pull the trigger (Fig. 6). Fig. 6 NOTE: If a center pin and guide plate are not available, use a template or notched board to start the hole (Fig. 7). Fig. 7 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 as shown, and run it briefly in forward to loosen the core bit from the adapter (Fig. 8). Fig. 8 NOTE: To make deeper holes, remove the core bit, break and remove the core. Resume drilling. Using LHS Rotary Percussion Core Bits (Fig. 9-12) LHS Core Bits are useful for drilling large or long holes in concrete. MILWAUKEEHeavy-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 centering bit into the core bit (Fig. 9). Thread the adapter shank to the rear of the core bit. NOTE: If using an extension, first thread the adapter shank to the extension. Then thread the core bit to the extension. Fig. 9 2. Insert the adapter into the nose of the tool as described in “Installing Bits”. Set the stop rotation knob to the hammering-with-rotation setting. 3. Press the centering bit firmly against your center mark, hold the tool firmly and pull the trigger (Fig. 10). Fig. 10 NOTE: If the 48-20-5099 threaded stud is used, use a template or notched board to start the hole (Fig. 11). Fig. 11 4. To change the core bit, hold the tool upwards, pointing it away from your body as shown, and run it briefly in forward to loosen the core bit from the adapter (Fig. 12). Fig. 12 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. page 7 WARNING! WARNING! To reduce the risk of personal injury and damage to the tool or work: •...