Mighty Seven DW-404 Manual Del Usuario página 15

Hold the tool firmly, and place the socket over
the bolt or nut. Turn the tool on, and fasten
the bolt or nut to the proper torque. The
torque that is required to loosen a fastener
averages 75% to 80% of the tightening
torque, depending on the condition of the
contacting surfaces. However, if rust or
corrosion causes seizing, more torque may
be required. After fastening, always check the
torque with a torque wrench. The fastening
torque is affected by a wide variety of factors,
including the following:
• Socket
Socket Failure to use the correct size
socket will cause a reduction in the
fastening torque. A worn socket (wear on
the hex end or square end) will cause a
reduction in the fastening torque.
• Bolt
Although the torque coefficient and the
class of bolt may be the same, the proper
fastening torque will differ according to the
diameter of the bolt.
OPERATION
Even if the diameters of bolts are the
same, the proper fastening torque will differ
according to the torque coefficient, the class
of bolt and the bolt length.
• Accessories
The use of a universal joint or an extension
bar (both available separately) will reduce
the fastening force of the Impact Wrench
somewhat. Compensate by fastening for a
longer period of time.
• Technique
The manner of holding the tool or the
material to be fastened will affect the
torque.
Always wear safety goggles or safety
glasses with side shields during power
tool operations, or when blowing dust. If
operation is dusty, also wear a dust mask.
Do not at any time let brake fluids,
gasoline, petroleum-based products,
penetrating oils, etc. come in contact with
plastic parts. Chemicals can damage,
weaken or destroy plastic, which may
result in serious personal injury.
WARNING
WARNING
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