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fl utes and tend to make the bit bind in the hole. If
the bit should bind, a built-in, non-adjustable slip
clutch prevents the bit from turning. If this occurs,
stop the tool, free the bit and begin again.
Cold Starting
If this tool is stored for a long period of time or
at cold temperatures, it may not hammer initially
because the lubrication has become stiff. To warm
up the tool:
1. Insert and lock a bit or chisel into the tool.
2. Pull the trigger and apply force to the bit or chisel
against a concrete or wood surface for a few
seconds. Release the trigger
3. Repeat until the tool starts hammering. The colder
the tool is, the longer it will take to warm up.
Using Rotary Percussion Core Bits
(5317-59/59A only)
Core Bits are useful for drilling large or long holes
in concrete. 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.
Thread the adapter
shank to 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 cen-
ter of the core bit.
For LHS systems,
screw the threaded end of the centering bit into
the core bit.
NOTE: If using an extension, fi rst thread the
adapter shank to the extension. Then thread the
core bit to the extension.
3. Insert the adapter into the nose of the tool as
described in “Installing Bits and Chisels”. Set the
knob to the "hammering with rotation" setting.
WARNING To reduce the risk of injury,
keep hands and cord away from the bit and
all moving parts.
Selecting Action
1. Hammering with rotation.
(5317-59/59A only) Use this
setting for drilling holes with
drill bits.
2. Hammering only. For use with
“hammering-only” accessories.
Use this setting for chiseling or
setting self-drilling anchors.
3. Chisel adjustment. Use this
setting to adjust the angle of
the chisel blade in relation to the
tool. With a chisel mounted in
the tool:
• turn the knob to this setting
• rotate the chisel to the desired
angle
• turn the knob to "hammering-
only".
NOTE: To engage the hammering
mechanism, maintain pressure on
the bit. When the pressure on the
bit is released, the hammering will stop.
Starting and Stopping
1. To start the tool, grasp the handle fi rmly and pull
the trigger.
2. To stop the tool, release the trigger. Make sure
the tool comes to a complete stop before laying
the tool down.
Lock-On (5347-59/59A/59B)
The lock-on button holds the trigger in the ON posi-
tion for continuous full speed use.
1. To lock the trigger, hold in the lock button while
pulling the trigger. Release the trigger.
2. To unlock the trigger, pull the trigger and release.
The lock button will pop out.
Operating
Position the tool, grasp the handles fi rmly and pull
the trigger. Always hold the tool securely using
both handles to maintain control. This tool has
been designed to achieve top performance with
only moderate pressure. Let the tool do the work.
If the speed begins to drop off when drilling large
or deep holes, pull the bit partially out of the hole
while the tool is running to help clear dust. Do not
use water to settle the dust since it will clog the bit
OPERATION
WARNING To reduce the risk of injury,
wear safety goggles or glasses with side shields.
WARNING To reduce the risk of injury,
always unplug tool before attaching or remov-
ing accessories or making adjustments. Use
only specifi cally recommended accessories.
Others may be hazardous.
Hammering with rotation
(5317-59/59A only)
Hammering only
Chisel adjustment
4. Press the centering bit fi rmly against your center
mark, hold the tool fi rmly and pull the trigger.
NOTE: If the 48-20-
5099 threaded stud is
used, or a center pin
and guide plate are
not available, use a
template or notched
board to start the hole.
5. Start the tool. After drilling
to about the depth of the
core bit teeth, remove
the center pin and guide
plate from the core bit
(not necesary for LHS
system). Resume drill-
ing.
6. To change the core bit,
hold the tool upwards,
pointing it away from
your body, and run it
briefl y in forward to loos-
en the core bit from the
adapter.
NOTE: To make deeper holes, remove the core bit,
break and remove the core, then resume drilling.
When drilling long or deep holes, after each inch
of penetration pull the bit partially out of the hole
while the tool is running, to help clear dust from the
bit fl utes. Dust can clog the bit fl utes and can make
the bit bind in the hole. If this occurs, stop the tool,
free the bit and begin again.
Drilling Large Diameter Holes with Core Bits
(5317-59/59A only)
When drilling holes with large diameter core bits,
dust may build up in the cut and can cause the tool
to stall, bind, or cut slowly. By creating an opening
for the dust to escape, drilling time, bit stress, and
tool stress can be reduced.
1. Start the cut as normal.
2. Once the bit is fi rmly established
in the cut (about 1/4" deep),
remove the bit from the cut.
3. Remove the bit from the tool.
4. Install a standard fl uted bit, ap-
proximately 7/8" in diameter,
onto the tool.
5. Drill a perpendicular hole
through the kerf of the large hole.
• Depending on the location
of the work, the hole should
either break through the other
side of the hole/fl oor or extend
4"-5" past the end of the
workpiece (such as into the
dirt below a concrete slab).
• If dust builds up in the hole,
vacuum it out and continue
drilling.
• If drilling through a wall, the
hole for dust should be drilled
on the lowest part of the large
hole kerf as the dust will fall
there when drilling and can
be evacuated more easily.
Cut
approximately
1/4" deep with
a core bit.
Drill a hole
through the
work.
Dust and debris
will fall through
the hole.
Top view
Side view
of slab
Pull bit out as far
as possible once
or twice per inch
drilled.
6. Reinstall the core bit and continue drilling. Dust
and debris will fall through the hole and optimize
the cutting ability of the bit.
NOTE: If unable to drill a hole
in the kerf, pull back on the
bit with the hammer running.
This will remove some of the
dust and debris from the cut.
Repeat this for every inch of
drilling. If necessary, vacuum
dust and debris from the cut
and surrounding area.
7. For core bits, once the
maximum core bit depth
is drilled, the core must be
broken and removed.
• Install a chisel bit.
• Place the chisel into the
hole kerf.
• Chisel down into the kerf
at several points until the
core is loose or broken.
• Remove the core and
vacuum/remove any
remaining dust and
debris.
• Install the core bit
and continue the cut.