Assessments - 3, GPA: 4.7
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9, and pull battery pack out of tool. To install a battery pack, align rails (A) Fig. 9 on battery pack with slots on tool and push battery pack onto tool until it locks in place. A B Fig. 9 HOW TO HOLD THE DRILL/DRIVER The front end of the Drill/Driver may be made live if the tool drills into live wiring in the wall. TO PREVENT ELECTRICAL SHOCK, THE HAMMER DRILL/DRIVER MUST BE HELD AS SHOWN IN FIG. 10A. IT’S A DRILL Fig. 10A 11 HOW TO HOLD THE HAMMER DRILL/DRIVER The front end of the Hammer Drill/Driver may be made live if the tool drills into live wiring in the wall. TO PREVENT ELECTRICAL SHOCK, THE HAMMER DRILL/DRIVER MUST BE HELD AS SHOWN IN FIG. 10B. IT’S A HAMMER DRILL GENERAL DRILLING 1. Set torque adjusting collar for drilling operation and set speed selector to appropriate speed. 2. Be sure drill bit is securely gripped in chuck. 3. Set REVERSING BUTTON for clockwise rotation. Make sure work is held securely in vise or clamped in place prior to starting drilling operation. Loose work may spin and cause bodily injury. 4. Locate exact center for hole to be drilled, and use a center punch to make a small dent in work. 5. Place tip of drill bit in dent made by center punch, hold drill square with work, and start the motor. Applying too much pressure may cause the bit to overheat or break resulting in bodily injury or damaged drill bits. Apply steady, even pressure to keep drill bit cutting. Too little pressure will keep the bit from cutting and dull the cutting edges due to excessive friction created by sliding over the surface. Always be alert and brace yourself against the twisting action of the drill. 6. If drill stalls or becomes jammed in the hole, release trigger immediately, remove drill bit from work, and determine cause of stalling or jamming. DO NOT SQUEEZE TRIGGER ON AND OFF IN AN ATTEMPT TO FREE A STALLED OR JAMMED DRILL – THIS WILL DAMAGE THE MOTOR. The direction of rotation may be reversed to help free a jammed bit. Be sure direction of rotation is RESET before attempting to continue drilling. 7. Reduce the pressure on the drill just before the bit cuts through the work to avoid splintering wood or stalling in metal. 8. When bit has completely penetrated work and is spinning freely, withdraw it from the work while the motor is still running, then turn off drill. 12 Fig.. 10B DRILLING WOOD In addition to the instructions listed under "GENERAL DRlLLlNG", the following also apply: 1. When using twist drills in wood, withdraw them from the hole frequently to clear chips built up in flutes to avoid overheating and burning work. 2. If a backing block is used to keep back of work from splintering, clamp it securely in place. If a backing block is not used with spade bits or hole saws, ease up pressure as soon as bit point breaks through work, and complete the hole from the opposite side. DRILLING METAL In addition to the instructions listed under "GENERAL DRlLLlNG", the following also apply: 1. Use only good quality sharp high speed steel twist bits. 2. Start drilling with slow speed and gradually increase speed as drill cuts. The harder the material, the slower the speed required. 3. When drilling a large hole, drill a smaller hole first and then enlarge it to the required size. 4. The use of a lubricant, such as oil, on the drill point helps keep the bit cool, increases drilling action, and prolongs drill bit life. DRIVING WOOD SCREWS Fig. 11 IT’S A SCREWDRIVER 1. Drill pilot and shank clearance holes. See chart Fig. 12. SUGGESTED HOLE SIZES FOR WOOD SCREWS Screw Size Shank Drill Clearance Diameter Pilot Drill Diameter Soft Wood Hard Wood #6 9/64 (.140) 1/16 (.062) 7/64 (.109) #8 11/64 (.172) 5/64 (.078) 1/8 (.125) #10 3/16 (.187) 3/32 (.094) 9/64 (.140) #12 7/32 (.218) 7/64 (.109) 5/32 (.156) ^ Shank Drill v ^ Pilot Drill v Fig. 12 13 2. Install proper bit that fits screw to screwdriver. 3. Set torque adjusting collar for desired torque and set speed selector to LOW. 4. Set screwdriver for correct rotation. 5. Start screw straight in hole with fingers. 6. Place bit on screw, remove fingers, start screwdriver, and exert pressure to drive screw. 7. As soon as screw has seated, lift screwdriver from screw. 8. A lubricant, such as soap or wax, may be used on screw threads for ease of driving, particularly in hard wood. 9. Combination pilot drill, shank drill, and countersink bits are available from local supply houses for drilling holes in one easy operation. DRIVING SELF-TAPPING SCREWS 1. Drill pilot hole of correct size as recommended by screw manufacturer. 2. Install proper bit that fits screw. 3. Set torque adjusting collar for desired torque and set speed selector to LOW. 4. Set screwdriver for correct rotation. 5. Position bit in head of screw. 6. Place end of screw into pre-drilled hole, remove fingers, start screwdriver and drive screw. 7. As soon as screw has seated, lift screwdriver from screw. DRIVING MACHINE SCREWS 1. Drill and tap correct hole size for fastener. 2. Start screw in hol...
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Brocas e shuropopverty - 8723 (237.08 kb)