6
7
ACCESSORIES
WARNING
To reduce the risk of injury,
always unplug the tool before attaching or
removing accessories. Use only specifi cally
recommended accessories. Others may be
hazardous.
WARNING
To reduce the risk of injury,
electric shock and damage to the tool, never
immerse your tool in liquid or allow a liquid
to fl ow inside the tool.
MAINTENANCE
WARNING
To reduce the risk of injury,
always unplug your tool before performing
any maintenance. Never disassemble the tool
or try to do any rewiring on the tool’s electrical
system. Contact a MILWAUKEE service facility
for ALL repairs.
OPERATION
Selecting Action
MILWAUKEE
Hammer-Drills have two settings:
drilling and hammer-drilling.
1. For
drilling
, turn the hammer-drill lever to the
drill symbol.
2. For
hammer-drilling
, turn the hammer-drill lever
to the hammer symbol.
NOTE:
To engage the hammering mechanism,
maintain pressure on the bit. When pressure
on the bit is released, the hammering action will
stop.
Using Forward/Reverse Lever (Fig. 6)
The forward/reverse
lever can only be ad-
justed when the trigger
is not pressed. Always
allow the motor to come
to a complete stop be-
fore using the forward/
reverse lever.
1. For
forward
(clock-
wise) rotation, push
the forward/reverse
lever to the left (when
viewed from the back
of the tool) as shown.
2. For
reverse
(counterclockwise) rotation, push
the forward/reverse lever to the right (when
viewed from the back of the tool) as shown. Allow
the motor to come to a full stop before reversing.
NOTE:
When hammer-drilling, use the tool in for-
ward rotation (clockwise) only.
Selecting Speed (Cat. No. 5387-20 only)
The speed can only be changed when the tool is
at a complete stop.
1. For
high torque/low speed
(up to 1000 rpm),
turn the speed selector to position 1.
2. For
low torque/high speed
(up to 2500 rpm),
turn the speed selector to position 2.
Starting, Stopping & Controlling Speed
1. To
start
the tool, pull trigger.
2. To
stop
the tool, release trigger.
3. To
vary
the speed, increase or decrease pres-
sure to trigger. The further the trigger is pulled,
the greater the speed.
Operating
Position the tool, grasp the handles fi rmly and pull
the trigger. Always hold or brace the tool securely
using both handles and 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 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.
WARNING
To reduce the risk of injury,
wear safety goggles or glasses with side
shields. Unplug the tool before changing
accessories or making adjustments.
Fig. 6
Forward
Reverse
APPLICATIONS
Drilling in Wood, Composition Materials and
Plastic
When drilling in wood, composition materials and
plastic, select the drill operating mode. Start the drill
slowly, gradually increasing speed as you drill. Se-
lect low speeds for plastics with a low melting point.
Drilling in Metal
When drilling in metal, select the drill operating
mode. Use high speed steel twist drills or hole saws.
Use a center punch to start the hole. Lubricate drill
bits with cutting oil when drilling in iron or steel. Use
a coolant when drilling in nonferrous metals such
as copper, brass or aluminum. Back the material
to prevent binding and distortion on breakthrough.
Drilling in Masonry
When drilling in masonry, select the hammer-drill
operating mode. Use high speed carbide-tipped
bits. Drilling soft masonry materials such as cinder
block requires little pressure. Hard materials like
concrete require more pressure. A smooth, even
fl ow of dust indicates the proper drilling rate. Do
not let the bit spin in the hole without cutting. Do
not use water to settle dust or to cool bit. Do not
attempt to drill through steel reinforcing rods. Both
actions will damage the carbide.
WARNING
To reduce the risk of electric
shock, check work area for hidden pipes and
wires before drilling.
Maintaining Tools
Keep your tool in good repair by adopting a regular
maintenance program. Before use, examine the
general condition of your tool. Inspect guards,
switches, tool cord set and extension cord for dam-
age. Check for loose screws, misalignment, binding
of moving parts, improper mounting, broken parts
and any other condition that may affect its safe oper-
ation. If abnormal noise or vibration occurs, turn the
tool off immediately and have the problem corrected
before further use. Do not use a damaged tool.
Tag damaged tools “DO NOT USE” until repaired
(see “Repairs”).
Under normal conditions, relubrication is not neces-
sary until the motor brushes need to be replaced.
After six months to one year, depending on use,
return your tool to the nearest
MILWAUKEE
service
facility for the following:
• Lubrication
• Brush inspection and replacement
• Mechanical inspection and cleaning (gears,
spindles, bearings, housing, etc.)
• Electrical inspection (switch, cord, armature, etc.)
• Testing to assure proper mechanical and electrical
operation
Cleaning
Clean dust and debris from vents. Keep the tool
handles clean, dry and free of oil or grease. Use
only mild soap and a damp cloth to clean your tool
since certain cleaning agents and solvents are
harmful to plastics and other insulated parts. Some
of these include: gasoline, turpentine, lacquer thin-
ner, paint thinner, chlorinated cleaning solvents,
ammonia and household detergents containing
ammonia. Never use fl ammable or combustible
solvents around tools.
Repairs
If your tool is damaged, return the entire tool to the
nearest service center.
For a complete listing of accessories refer to your
MILWAUKEE
Electric Tool catalog or go on-line
to www.milwaukeetool.com. To obtain a catalog,
contact your local distributor or a service center.
Side Handle
Cat. No. 49-15-5300
Depth Gauge
Cat. No. 48-66-5185
