DeWalt DCF805 Instruction Manual page 35

To remove the battery pack from the tool, press the release button (E)
and firmly pull the battery pack out of the tool handle. Insert it into the
charger as described in the charger section of this manual.
Variable Speed Trigger Switch (Fig. 2)
To turn the tool on, squeeze the trigger switch (A). To turn the tool
off, release the trigger switch. Your tool is equipped with a brake. The
chuck will stop when the trigger switch is fully released. The variable
speed switch enables you to select the best speed for a particular
application. The more you squeeze the trigger, the faster the tool will
operate. For maximum tool life, use variable speed only for starting
holes or fasteners.
NOTE: Continuous use in variable speed range is not recommended.
It may damage the switch and should be avoided.
Forward/Reverse Control Button (Fig. 2)
A forward/reverse control button (B) determines the direction of the
tool and also serves as a lock off button. To select forward rotation,
release the trigger switch and depress the forward/reverse control
button on the right side of the tool. To select reverse, depress the
forward/reverse control button on the left side of the tool. The center
position of the control button locks the tool in the OFF position. When
changing the position of the control button, be sure the trigger is
released.
NOTE: The first time the tool is run after changing the direction of
rotation, you may hear a click on start up. This is normal and does
not indicate a problem.
Quick-Release Chuck (Fig. 2, 4, 5)
NOTE: The chuck accepts 1/4" (6.35 mm) hex accessories and 1"
(25.4 mm) bit tips only.
Place the forward/reverse button (B) in the locked off (center) position
or remove battery pack before changing accessories.
To install an accessory, fully insert the accessory. The accessory is
locked into place (Fig. 4).
To remove an accessory, pull the chuck collar (C) away from the front
of the tool. Remove the accessory and release the collar (Fig. 5).
FIG. 4
C
D
Usage
Your impact tool generates the following output torque:
Cat # Ft.-Lbs.
DCF805 79
CAUTION: Ensure fastener and/or system will withstand the level
of torque generated by the tool. Excessive torque may cause
breakage and possible personal injury.
1. Place the socket on the fastener head. Keep the tool pointed
straight at the fastener.
2. Press switch to start operation. Always check torque with a
torque wrench, as the fastening torque is affected by many
factors including the following:
• Voltage: Low voltage, due to a nearly discharged battery, will
reduce fastening torque.
• Socket size: Failure to use the correct socket size will cause a
reduction in fastening torque.
• Bolt Size: Larger bolt diameters generally require higher
fastening torque. Fastening torque will also vary according to
length, grade, and torque coefficient.
33
FIG. 5
C
D
In.-Lbs. Nm
950 107