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DeWalt DC820 Instruction Manual

1/2inch(13 mm) cordless impact wrench 1/4inch(6.35 mm) cordless impact driver 3/8inch(9.5 mm) cordless impact wrench 18 v 1/2inch(13 mm) cordless impact wrench
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C820, DC822, DC830, DC840 1/2" (13 mm) Cordless Impact Wrench
DC825, DC827, DC835, DC845, DC855, DCF826 1/4" (6.35 mm) Cordless Impact Driver
DC823, DC833, DC841 3/8" (9.5 mm) Cordless Impact Wrench / DC821, DW059, DW059H 18 V 1/2" (13 mm) Cordless Impact Wrench


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Summary of Contents for DeWalt DC820

  • Page 1: Instruction Manual

    INSTRUCTION MANUAL C820, DC822, DC830, DC840 1/2" (13 mm) Cordless Impact Wrench DC825, DC827, DC835, DC845, DC855, DCF826 1/4" (6.35 mm) Cordless Impact Driver DC823, DC833, DC841 3/8" (9.5 mm) Cordless Impact Wrench / DC821, DW059, DW059H 18 V 1/2" (13 mm) Cordless Impact Wrench...
  • Page 2: Defi Nitions: Safety Guidelines

    1) WORK AREA SAFETY Defi nitions: Safety Guidelines a) Keep work area clean and well lit. Cluttered or dark areas invite accidents. The definitions below describe the level of severity for each b) Do not operate power tools in explosive atmospheres, signal word.
  • Page 3: Personal Safety

    3) PERSONAL SAFETY 4) POWER TOOL USE AND CARE a) Stay alert, watch what you are doing and use common a) Do not force the power tool. Use the correct power tool sense when operating a power tool. Do not use a power for your application.
  • Page 4: Additional Specific Safety Rules

    battery pack may create a risk of fire when used with another • Accessories and tools get hot during operation. Wear gloves battery pack. when touching them. b) Use power tools only with specifically designated battery • Do not operate this tool for long periods of time. Vibration packs.
  • Page 5: Important Safety Instructions For All Battery Packs

    Important Safety Instructions for All WARNING: Use of this tool can generate and/or disperse dust, which may cause serious and permanent respiratory or other Battery Packs injury. Always use NIOSH/OSHA approved respiratory protection When ordering replacement battery packs, be sure to include catalog appropriate for the dust exposure.
  • Page 6: Specific Safety Instructions For Lithium Ion (Li-Ion)

    NOTE: Battery storage and carrying caps are provided medical attention. (Medical note: The liquid is 25–35% for use whenever the battery is out of the tool or solution of potassium hydroxide.) charger. Remove cap before placing battery in SPECIFIC SAFETY INSTRUCTIONS FOR LITHIUM ION (Li-Ion) charger or tool.
  • Page 7: Important Safety Instructions For All Battery Chargers

    ion batteries. Help protect our environment and conserve natural • DO NOT attempt to charge the battery pack with any resources by returning the spent nickel cadmium, nickel metal chargers other than the ones in this manual. The charger and hydride or lithium ion batteries to an authorized D WALT service battery pack are specifically designed to work together.
  • Page 8 Using Automatic Tune-Up™ Mode Minimum Gauge for Cord Sets The automatic Tune-Up™ Mode equalizes or balances the Volts Total Length of Cord in Feet (meters) Ampere individual cells in the battery pack allowing it to function at peak 120V 25 (7.6) 50 (15.2) 100 (30.5) 150 (45.7) Rating capacity.
  • Page 9: Charge Indicators

    2. Insert the battery pack (M) into the charger, as shown in Figure 1, Charge Indicators making sure the pack is fully seated in charger. The red (charging) Some chargers are designed to detect certain problems that can arise light will blink continuously indicating that the charging process with battery packs.
  • Page 10: Important Charging Notes

    charge, it may need to be recharged before use. A battery pack may 4. The battery pack should be recharged when it fails to produce also slowly lose its charge if left in a charger that is not plugged into sufficient power on jobs which were easily done previously.
  • Page 11: Intended Use

    FIG. 2 COMPONENTS (Fig. 2, 5, 6) WARNING: Never modify the power tool or any part of it. Damage or personal injury could result. A. Trigger switch H. Hog ring B. Rocker switch (DW059) I. Battery release buttons C. Forward/reverse button J.
  • Page 12 To move belt hook, remove the screw (L) that holds the belt hook in Variable Speed Trigger Switch (Fig. 2) place then reassemble on the opposite side. To turn the tool on, squeeze the trigger switch (A). To turn the tool off, release the trigger switch.
  • Page 13 Quick-Release Chuck (Fig. 4) ANVIL WITH DETENT PIN (FIG. 5) FIG. 5 DC820, DC821, DC822, DC830, DC840, DC825, DC827, DC835, DC845, DC855, DCF826 DW059 NOTE: The chuck accepts 1/4" (6.35 mm) hex accessories only. To install an accessory on the anvil,...
  • Page 14: Maintenance

    • Bolt Size: Larger bolt diameters generally require higher Cat # Ft.-Lbs. In.-Lbs. fastening torque. Fastening torque will also vary according to DC820 1740 length, grade, and torque coefficient. DC821 1920 • Bolt: Ensure that all threads are free of rust and other debris to...
  • Page 15 (including brush inspection and replacement) should be performed by a D WALT factory service center, a D WALT authorized service center or other qualified service personnel. Always use identical replacement parts. View other Power Tools made by DeWalt Tools on our website.

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