DeWalt DCF787 - Maintenance

11
ENGLISH
Usage
Your impact tool generates the following maximum torque:
Cat # Nm Ft.-Lbs. In.-Lbs
DCF787 170 125 1500

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 accessory on the fastener head. Keep the tool
pointed straight at thefastener.
2. Press switch to start operation. Release the switch to stop
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.
• Accessory size: Failure to use the correct accessory
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.
• Bolt: Ensure that all threads are free of rust and other
debris to allow proper fasteningtorque.
• Material: The type of material and surface finish of
the material will affect fasteningtorque.
• Fastening Time: Longer fasten ing time results in
increased fastening torque. Using a longer fastening
time than recom mended could cause the fasteners to
be overstressed, stripped ordamaged.
MAINTENANCE
Your
DeWALT
power tool has been designed to operate
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regularcleaning.

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An accidental
start-up can causeinjury.
The charger and battery pack are notserviceable.
Lubrication
Your power tool requires no additionallubrication.
Cleaning

WARNING: Blow dirt and dust out of the main housing
with dry air as often as dirt is seen collecting in and around
the air vents. Wear approved eye protection and approved
dust mask when performing thisprocedure.

WARNING: Never use solvents or other harsh chemicals
for cleaning the non-metallic parts of the tool. These
chemicals may weaken the materials used in these parts.
Use a cloth dampened only with water and mild soap.
Never let any liquid get inside the tool; never immerse any
part of the tool into aliquid.
Optional Accessories

WARNING: Since accessories, other than those offered by
DeWALT
, have not been tested with this product, use of
such accessories with this tool could be hazardous.

WARNING: Use only impact accessories. Non-impact
accessories may break and cause a hazardous condition.
Inspect accessories prior to use to ensure that they contain
no cracks.
Consult your dealer for further information on the
appropriateaccessories.
Protecting the Environment
Separate collection. Products and batteries marked
with this symbol must not be disposed of with normal
householdwaste.
Products and batteries contain materials that can
be recovered or recycled reducing the demand for raw
materials. Please recycle electrical products and batteries
according to local provisions. Further information is available at
www.2helpU.com.
Rechargeable Battery Pack
This long life battery pack must be recharged when it fails
to produce sufficient power on jobs which were easily done
before. At the end of its technical life, discard it with due care for
our environment:
• Run the battery pack down completely, then remove it from
thetool.
• Li-Ion cells are recyclable. Take them to your dealer or a
local recycling station. The collected battery packs will be
recycled or disposed ofproperly.