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ASSEMBLY
WARNING
Recharge only with the
charger specified for the battery. For spe-
cifi c charging instructions, read the operator's
manual supplied with your charger and battery.
WARNING
Always remove battery
pack before changing or removing ac-
cessories. Only use accessories specifi cally
recommended for this tool. Others may be
hazardous.
Removing Battery Pack from Tool
Push in the release buttons and pull the battery
pack away from the tool.
Inserting Battery Pack into Tool
To insert the battery pack onto the tool, slide the
pack onto the body of the tool. Make sure it latches
securely into place.
Adjusting the Side Handle Position
1. Loosen the side handle by unscrewing the side
handle grip until the side handle rotates freely.
2. Rotate the side handle to the desired position.
3. Tighten the side handle grip securely.
Setting the Depth Gauge
1. Press in the clamping lever.
2. Slide the depth gauge rod backward or forward
until it is set for the desired depth.
NOTE: The drilling depth is the distance between
the tip of the bit and the tip of the depth gauge
rod.
3. Release the clamping lever.
Fig. 1
Drilling
Depth
Installing Drill Bits and Chisels
NOTE: Only use accessories with SDS or SDS
Plus shanks.
Be sure that the shank of the bit is clean. Dirt par-
ticles may cause the bit to line up improperly. Do not
use bits larger than the maximum recommended
capacity of the drill because gear damage or mo-
tor overloading may result. For best performance,
be sure that the bit is properly sharpened and the
shank is lightly greased before use.
1. Insert the bit or chisel into the nose of the tool.
2. Rotate bit slowly until it aligns with the locking
mechanism.
3. Push bit into tool until it locks.
4. Check that the bit is locked properly; it should
be possible to pull the bit back and forth slightly
(about 1/4").
5. To remove bits and chisels, pull bit holder release
collar toward the rear of tool and remove bit.
NOTE: Use caution when handling hot bits and
chisels.
OPERATION
WARNING
Always remove battery
pack before changing or removing ac-
cessories. Only use accessories specifi cally
recommended for this tool. Others may be
hazardous.
WARNING
To reduce the risk of injury,
keep hands away from the bit and all moving
parts. Always wear safety goggles or glasses
with side shields.
WARNING
To reduce the risk of injury,
always use a side handle when using this tool.
Always brace or hold securely.
Selecting Action
MILWAUKEE Rotary Hammers have three settings:
drill only, rotary hammer, and hammer only.
1. For drilling, turn the se-
lector lever so the arrow
on the lever points to the
twist drill symbol .
2. For rotary hammering,
turn the selector lever
so the arrow points to
the hammer and twist
drill symbol
.
3. For hammering only, turn the selector lever so
the arrow points to the hammer symbol
4. To freely rotate the bit to the desired angle for
chiseling only, turn the selector lever so the arrow
0
points to the symbol
. Then, follow step 3.
NOTE: To engage the hammering mechanism,
maintain pressure on the bit. When pressure on
the bit is released, the hammering action will stop.
Using the Control Switch
The control switch may be set to three positions:
forward, reverse and lock. Due to a lockout mecha-
nism, the control switch can only be adjusted when
the trigger is not pulled. Always allow the motor to
come to a complete stop before using the control
switch.
For forward (clockwise) rotation, push in the con-
trol switch from the left side of the tool. Check the
direction of rotation before use.
For reverse (counterclockwise) rotation, push in
the control switch from the right side of the tool.
Check direction of rotation before use.
To lock the trigger, push the control switch to the
center position. The trigger will not work while
the control switch is in the center locked position.
Always lock the trigger or remove the battery
pack before performing maintenance, changing
accessories, storing the tool and any time the tool
is not in use.
Starting, Stopping and Controlling Speed
1. To start the tool, grasp the handle fi rmly and pull
the trigger.
4
2. To vary the speed, increase or decrease the
pressure on the trigger. The further the trigger
is pulled, the greater the speed.
3. To stop the tool, release the trigger. Make sure
the tool comes to a complete stop before laying
the tool down.
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
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.
Using Core Bits
Core bits are useful for drilling large holes for
conduit and pipe. MILWAUKEE Heavy-Duty Thin
Wall Core Bits have heat treated steel bodies with
durable carbide tips. They 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 as indicated 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 with
guide plate a ssembly into
to the core bit. Be sure the
small end of the center pin is
securely placed into the hole
in the center of the adapter.
3.
Insert the adapter into
the bit holder of the tool as
described in "Inserting Drill
Bit or Chisel". Set the rotary
hammer/drill lever to rotary
hammer.
4. Press the center pin fi rmly
against your center mark,
hold the tool fi rmly and pull
the trigger.
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. After you have fi nished drill-
ing the hole, hold the tool
upwards, pointing it away
from your body, and run it
briefl y in forward to loosen
the core bit from the adapter.
MILWAUKEE Heavy-Duty Thin
Wall Core Bits drill holes up
to 3" deep. To make deeper
holes, remove the bit, break
and remove the core. Resume drilling.
APPLICATIONS
Selecting Bits
When selecting a bit, use the right type for your
job. For best performance, always use sharp bits.
Drilling
1. Before drilling, be sure the workpiece is clamped
securely. Use backing material to prevent dam-
age to the workpiece during breakthrough.
2. When starting a hole, place the drill bit on the
work surface and apply fi rm pressure. Begin
drilling at a slow speed, gradually increasing the
speed as you drill.
3. Always apply pressure in line with the bit. Use
enough pressure to keep the drill biting, but do
not push hard enough to stall the motor.
4. Reduce pressure and ease the bit through the
last part of the hole. While the tool is still running,
pull the bit out of the hole to prevent jamming.
Drilling in Wood, Composition Materials and
Plastic
When drilling in wood, composition materials and
plastic, start the drill slowly, gradually increasing
speed as you drill. When drilling into wood, use
wood augers or twist drill bits. Always use sharp
bits. When using twist drill bits, pull the bit out of the
hole frequently to clear chips from the bit fl utes. To
reduce the chance of splintering, back work with a
piece of scrap wood. Select low speeds for plastics
with a low melting point.
Adapter
Clean
and
lubricate
threads
Core
Bit
Center
Pin
Guide
Plate
5
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