Milwaukee 5337-20 Manuel De L'utilisateur page 7

Ideal operator force compresses the handle slightly
and allows the tool to work aggressively while the
handle provides maximum vibration dampening.
Excessive operator force compresses the handle
too far and reduces the vibration dampening. Users
will be able to feel the difference and should adjust
the force to the handle accordingly.
Applying greater pressure does not
WARNING
increase the tool's effectiveness.
If the applied working pressure is too high, the
shock absorber will be pushed together making
vibration to the handle noticeably stronger.
Hammering Only
1. Insert a chisel or other "hammering only" acces-
sory into the tool (see "Installing Bits and Chisels").
2. Position the tool on the workpiece.
3. Grasp both handles firmly (trigger handle and
either the spade handle or straight handle).
4. Pull the trigger. Always hold the tool securely using
two handles and maintain control.
5. Use only enough pressure to hold the tool in place,
engage the hammering mechanism, and prevent
the tip of the chisel from wandering. This tool has
been designed to achieve top performance with
only moderate pressure. Let the tool do the work.
NOTE: To engage the hammering mechanism,
maintain pressure on the bit/chisel. When pressure
is released, hammering stops.
6. When chiseling or chipping, hold the tool at an
angle to the work area. For best performance,
work from a corner or close the edge of the work
and break off a small area at a time.
If a hammer iron gets stuck:
1. Unplug the tool.
2. Pull out bit lock and rotate it 180°.
3. Pull the tool off of the stuck accessory.
4. Remove the accessory from the workpiece.
Hammering with Rotation
1. Insert a drill or coring bit into the tool (see "Install-
ing Bits and Chisels").
2. Position the tool on the workpiece.
3. Grasp both handles firmly (trigger handle and
straight handle).
To reduce the risk of injury, hold or
WARNING
brace securely. Always be pre-
pared for drill reaction when bit binds, when hole
becomes clogged, when striking embedded
materials, and during hole breakthrough.
4. Pull the trigger. Always hold the tool securely using
the straight handle and trigger handle and maintain
control.
5. Use only enough pressure to hold the tool in place,
engage the hammering mechanism, and prevent
the tip of the bit from wandering. This tool has
been designed to achieve top performance with
only moderate pressure. Let the tool do the work.
When pressure is released, hammering stops.
6. When drilling deep holes, the speed may begin to
drop off. Pull the bit partially out of the hole while
the tool is running to help clear dust.
NOTE: Do not use water to settle the dust since
it will clog the bit flutes and tend to make the bit
bind in the hole.
If a bit binds:
If the bit should bind, a built in, nonadjustable slip
clutch prevents the bit from turning when the tool is
held or braced securely. If this occurs:
1. Turn off and unplug the tool.
2. Free the bit from the workpiece.
3. Clear debris from the hole.
4. Begin drilling again.
Use MILWAUKEE core bits Cat. No.
WARNING
48-20-5125 through 48-20-5165. Do
not use LHS (Large Hole System) Components
with rotary hammers 5340-20 and 5342-20. The
bits could fail, breaking apart at the threaded stud
and causing injury and property damage.
Using Rotary Percussion Core Bits
Core bits are useful for drilling larger holes for con-
duit and pipe. MILWAUKEE Heavy-Duty Core Bits
have heat-treated steel bodies with durable carbide
tips. These core bits are specially designed for fast,
accurate drilling with combined hammering and
rotary action.
1. Clean and lubricate the threads on the adapter
and core bit to make later removal easier. Screw
the threaded end of the adapter into the rear of
the core bit.
2. Push the guide plate onto the pointed end of the
center pin. Insert the center pin and guide plate
assembly into the core bit. Be sure the small end
of the center pin is securely placed into the hole
in the center of the core bit.
3. Insert the adapter into the nose of the tool (see
"Installing Bits and Chisels". Set the action selector
to the hammering-with-rotation setting.
4. Press the center pin firmly
against your center
mark, hold the tool
firmly and pull the trig-
ger.
NOTE: If a center pin
and guide plate are not
available, use a template
or notched board to start
the hole.
5. After drilling to about
the depth of the core
bit teeth, remove the
center pin and guide
plate from the core bit.
Resume drilling.
6. To change the core bit,
hold the tool upwards,
pointing it away from
your body, and run
the tool allowing rota-
tion and impacting for
about five seconds
to loosen the core
bit from the adapter
shank.
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