Assessments - 2, GPA: 3.5
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4 from the bit holder by pulling it straight out. 3. Push the new bit holder into the spindle and snap it into place. 4. Replace the Depth Stop Assembly and adjust the depth stop (see “ADJUST DEPTH STOP, MODELS 4630 AND 4634”). ADJUST DEPTH STOP – MODELS 4630 AND 4634 1. Turn the adjusting collar until the end of the bit extends 3/32" beyond the end of the depth stop. Do not push the bit holder in. This will engage the internal drive. 2. Drive a test fastener in the same material as your workpiece. Examine the results and make any additional depth stop adjustments: a) To increase the depth of drive, repeat STEP 1 and turn the adjusting collar so that the end of the bit extends further than the end of the depth stop. b) To decrease depth of drive, repeat STEP 1 and turn the adjusting collar so that the end of the bit is closer to the end of depth stop. Each click of the adjusting collar results in a .007" change in the depth of drive. 3. Repeat STEPS 1 and 2 until the desired result is obtained. DRIVING DRYWALL SCREWS – MODELS 4630, 4634 NOTE: Maximum size screw for use with this tool is #12 Wood Screw. 1. Install a drywall bit and bit holder in the screwdriver. 2. Set the screwdriver for the correct rotation. 3. Start the screwdriver and place a drywall screw on the bit. Do not exert pressure on the screw while performing this operation. 4. Place the end of the screw in the desired location and remove your fingers. 5. Apply forward pressure to the drive screw until the depth stop rests on the surface of the work. Adjust the depth stop so that the fastener head is sunk just below the surface of the wallboard. 10 DRIVING SELF-DRILLING/TAPPING SCREWS – MODELS 4640 NOTE: Maximum size screws for use with this tool are #12 wood screws and 1/4" self-drilling/tapping screws. These screws drill and tap their own hole as they are driven. This differs from self-tapping screws in that pre-drilled holes for tapping are not required. To drive these screws: 1. Install the proper nutsetter that fits the screw to the screwdriver. 2. Set the screwdriver for the correct rotation. 3. Start the screwdriver and insert the head of the screw in the nutsetter. Do not exert pressure on the screw while performing this operation. 4. Place the end of the screw in the desired location and remove your fingers. 5. Apply forward pressure to drive screw until depth stop rests on the surface of the work. Adjust the depth stop so that the fastener head seats firmly on the work. Avoid seating the fastener too deep to prevent shearing off the head. TO REMOVE SCREWS – ALL MODELS 1. Remove the Depth Stop Assembly. 2. Install a proper bit that fits the screw. 3. Set the screwdriver for reverse rotation. 4. Place the bit on the screw and apply forward pressure. 5. Start the screwdriver. TROUBLESHOOTING For assistance with your tool, visit our website at for a list of service centers or call the Porter-Cable help line at 1-800-487-8665. MAINTENANCE CHECK CLUTCH CONDITION DISCONNECT TOOL FROM POWER SOURCE. Periodically, check the screwdriver clutch jaws for wear by removing the screwdriver mechanism housing (A) Fig. 5 from the power unit. A Fig. 5 11 NOTE: The clutch housing is attached to the power unit with left-hand threads. Remove the depth-stop assembly from the clutch housing by pulling it straight off. Remove the clutch housing by turning the clutch housing clockwise. NOTE: Be careful not to lose the small spring that is in the end of the power unit spindle shaft. Note the condition of the 3-jaw clutch faces on the power unit and screwdriver mechanism. If they are badly rounded where the angular face meets the top surface (or appear otherwise worn or faulty), or if the clutch elements are not securely held in place on their respective shafts by the snap rings, return the entire tool to your AUTHORIZED PORTER-CABLE SERVICE STATION for service. If the jaws are not seriously worn and no other apparent faults show up in the mechanism, clear the mechanism and all internal areas of chips or other foreign material. Brush a thin coat of PORTER-CABLE gear lubricant on the clutch elements and surrounding areas. Attach the screwdriver mechanism to the power unit. Be sure the spring is in the spindle shaft. NOTE: The housing threads are left-hand thread. KEEP TOOL CLEAN Periodically blow out all air passages with dry compressed air. All plastic parts should be cleaned with a soft damp cloth. NEVER use solvents to clean plastic parts. They could possibly dissolve or otherwise damage the material. Wear ANSI Z87.1 safety glasses while using compressed air. FAILURE TO START Should your tool fail to start, check to make sure the prongs on the cord plug are making good contact in the outlet. Also, check for blown fuses or open circuit breakers in the line. LUBRICATION This tool has been lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. No further lubrication is necessary....
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Brocas e shuropopverty - 4630 (129.11 kb)