Milwaukee 5368-22, 5368-21, 5366-21 User Manual
Cat. No.
No de cat.
5366-21
5368-21
5368-22
OPERATOR'S MANUAL
MANUEL de L'UTILISATEUR
MANUAL del OPERADOR
HEAVY-DUTY 7/8" ROTARY HAMMERS
EXTRA ROBUSTES MARTEAUX ROTATIFS 22 mm (7/8")
ROTOMARTILLOS HEAVY-DUTY 22 mm (7/8")
TO REDUCE THE RISK OF INJURY, USER MUST READ OPERATOR'S MANUAL.
AFIN DE RÉDUIRE LE RISQUE DE BLESSURES, L'UTILISATEUR DOIT LIRE LE
MANUEL DE L'UTILISATEUR.
PARA REDUCIR EL RIESGO DE LESIONES, EL USUARIO DEBE LEER EL MANUAL
DEL OPERADOR.
GENERAL SAFETY RULES — FOR ALL POWER TOOLS
POWER TOOL USE AND CARE
SPECIFIC SAFETY RULES
WARNING
READ ALL INSTRUCTIONS
Failure to follow all instructions listed below may result in electric shock, fi re and/or
serious injury. The term "power tool" in all of the warnings listed below refers to your
mains-operated (corded) power tool or battery-operated (cordless) power tool.
SAVE THESE INSTRUCTIONS
WORK AREA SAFETY
1. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
2. Do not operate power tools in ex-
plosive atmospheres, such as in the
presence of fl ammable liquids, gases,
or dust. Power tools create sparks which
may ignite the dust or fumes.
3. Keep children and bystanders away
while operating a power tool. Distractions can cause you to lose control.
ELECTRICAL SAFETY
4. Power tool plugs must match the
outlet. Never modify the plug in any
way. Do not use any adapter plugs
with earthed (grounded) power tools.
Unmodifi ed plugs and matching outlets
will reduce risk of electric shock.
5. Avoid body contact with earthed or
grounded surfaces such as pipes,
radiators, ranges and refrigerators.
There is an increased risk of electric shock
if your body is earthed or grounded.
6. Do not expose power tools to rain or
wet conditions. Water entering a power
tool will increase the risk of electric
shock.
7. Do not abuse the cord. Never use the
cord for carrying, pulling, or unplugging the power tool. Keep cord away
from heat, oil, sharp edges, or moving parts. Damaged or entangled cords
increase the risk of electric shock.
8. When operating a power tool out-
doors, use an extension cord suitable
for outdoor use. Use of a cord suitable
for outdoor use reduces the risk of electric shock.
PERSONAL SAFETY
9. Stay alert, watch what you are do-
ing and use common sense when
operating a power tool. Do not use
a power tool while you are tired or
under the infl uence of drugs, alcohol
or medication. A moment of inattention
while operating power tools may result
in serious personal injury.
10. Use safety equipment. Always wear
eye protection. Safety equipment such
as dust mask, non-skid safety shoes,
hard hat, or hearing protection used
for appropriate conditions will reduce
personal injuries.
11. Avoid accidental starting. Ensure the
switch is in the off-position before plugging in. Carrying tools with your fi nger on
the switch or plugging in power tools that
have the switch on invites accidents.
12. Remove any adjusting key or wrench
before turning the power tool on. A
wrench or a key left attached to a rotating part of the power tool may result in
personal injury.
13. Do not overreach. Keep proper foot-
ing and balance at all times. This
enables better control of the power tool
in unexpected situations.
14. Dress properly. Do not wear loose
clothing or jewellery. Keep your hair,
clothing and gloves away from moving
parts. Loose clothes, jewellery, or long
hair can be caught in moving parts.
15. If devices are provided for the connec-
tion of dust extraction and collection
facilities, ensure these are connected
and properly used. Use of these de-
vices can reduce dust-related hazards.
16. Do not force the power tool. Use the
correct power tool for your application. The correct power tool will do the
job better and safer at the rate for which
it was designed.
17. Do not use the power tool if the switch
does not turn it on and off. Any power tool
that cannot be controlled with the switch is
dangerous and must be repaired.
18. Disconnect the plug from the power
source and/or the battery pack from
the power tool before making any
adjustments, changing accessories,
or storing power tools. Such preven-
tive safety measures reduce the risk of
starting the tool accidentally.
19. Store idle power tools out of the reach
of children and do not allow persons
unfamiliar with the power tools or
these instructions to operate power
tools. Power tools are dangerous in the
hands of untrained users.
20. Maintain power tools. Check for
misalignment or binding of moving
parts, breakage of parts and any
other condition that may affect the
power tool's operation. If damaged,
have the power tool repaired before
use. Many accidents are caused by
poorly maintained power tools.
21. Keep cutting tools sharp and clean.
Properly maintained cutting tools with
sharp cutting edges are less likely to
bind and are easier to control.
22. Use the power tool, accessories and
tool bits etc., in accordance with
these instructions and in the manner
intended for the particular type of
power tool, taking into account the
working conditions and the work to
be performed. Use of the power tool for
operations different from those intended
could result in a hazardous situation.
SERVICE
23. Have your power tool serviced by a
qualifi ed repair person using only
identical replacement parts. This will
ensure that the safety of the power tool
is maintained.
1. Hold power tools by insulated grip-
ping surfaces when performing an
operation where the cutting tool may
contact hidden wiring or its own cord.
Contact with a "live" wire will make exposed metal parts of the tool "live" and
shock the operator.
2. Wear ear protectors. Exposure to noise
can cause hearing loss.
3. Keep hands away from all cutting
edges and moving parts.
4. Use auxiliary handles supplied with
the tool. Loss of control can cause
personal injury.
5. Maintain labels and nameplates.
These carry important information.
If unreadable or missing, contact a
MILWAUKEE Service facility for a free
replacement.
6. WARNING! Some dust created by
power sanding, sawing, grinding, drilling, and other construction activities
contains chemicals known to cause
cancer, birth defects or other reproductive harm. Some examples of these
chemicals are:
• lead from lead-based paint
• crystalline silica from bricks and cement
and other masonry products, and
• arsenic and chromium from chemicallytreated lumber.
Your risk from these exposures varies,
depending on how often you do this
type of work. To reduce your exposure
to these chemicals: work in a well ventilated area, and work with approved
safety equipment, such as those dust
masks that are specially designed to
fi lter out microscopic particles.
2 3
FUNCTIONAL DESCRIPTION
GROUNDING
4
WARNING
Improperly connecting the grounding
3
5
wire can result in the risk of electric
shock. Check with a qualifi ed electri-
cian if you are in doubt as to whether
the outlet is properly grounded. Do
not modify the plug provided with
the tool. Never remove the grounding
prong from the plug. Do not use the
tool if the cord or plug is damaged.
If damaged, have it repaired by a
2
6
MILWAUKEE service facility before
use. If the plug will not fi t the outlet,
have a proper outlet installed by a
qualifi ed electrician.
1. Depth gauge
1
8
2. Side handle
3. Nameplate
4. Trigger
7
5. Handle
6. Forward/Reverse switch
(on other side of tool)
9
7. Hammer/Drill shift knob
8. Chuck collar
Grounded Tools:
Tools with Three Prong Plugs
Tools marked “Grounding Required” have a
three wire cord and three prong grounding
plug. The plug must be connected to a properly grounded outlet (See Figure A). If the
tool should electrically malfunction or break
down, grounding provides a low resistance
path to carry electricity away from the user,
reducing the risk of electric shock.
The grounding prong in the plug is connected
through the green wire inside the cord to
the grounding system in the tool. The green
wire in the cord must be the only wire connected to the tool's grounding system and
must never be attached to an electrically
“live” terminal.
Your tool must be plugged into an appropriate outlet, properly installed and grounded in
accordance with all codes and ordinances.
The plug and outlet should look like those
in Figure A.
Double Insulated Tools:
Tools with Two Prong Plugs
Tools marked “Double Insulated” do not
require grounding. They have a special
double insulation system which satisfies
OSHA requirements and complies with
the applicable standards of Underwriters
Laboratories, Inc., the Canadian Standard
Association and the National Electrical
Code. Double Insulated tools may be used
in either of the 120 volt outlets shown in
Figures B and C.
9. Dust shield
10. Bit (not included)
10
BPM
Symbology
Catalog
Number
5366-21
5368-21
5368-22
Fig. A
Volts
AC
120
120
120
Amps
7.2
7.2
7.2
No Load
RPM
0 - 1100
0 - 1100
0 - 1100
Double Insulated
Volts Alternating Current
Amps
No Load Revolutions per
Minute (RPM)
Blows per Minute
Underwriters Laboratories, Inc.
Canadian Standards
Association
Mexican Approvals Marking
4 5
Specifi cations
Drill Only
No Load
Blows/
Minute
0 - 5000
0 - 5000
0 - 5000
(steel or wood)
Twist
Drill Bits
1/2"
1/2"
1/2"
Fig. B
Carbide-Tipped
Percussion
5/32" - 7/8"
5/32" - 7/8"
5/32" - 7/8"
Fig. C
Rotary Hammer
(concrete)
Bits
Thin Wall
Percussion
Core Bits
2"
2"
2"
EXTENSION CORDS
TOOL ASSEMBLY
Grounded tools require a three wire extension cord. Double insulated tools can use
either a two or three wire extension cord.
As the distance from the supply outlet
increases, you must use a heavier gauge
extension cord. Using extension cords with
inadequately sized wire causes a serious
drop in voltage, resulting in loss of power
and possible tool damage. Refer to the table
shown to determine the required minimum
wire size.
The smaller the gauge number of the wire,
the greater the capacity of the cord. For example, a 14 gauge cord can carry a higher
current than a 16 gauge cord. When using
more than one extension cord to make up
the total length, be sure each cord contains
at least the minimum wire size required. If
you are using one extension cord for more
than one tool, add the nameplate amperes
and use the sum to determine the required
minimum wire size.
Guidelines for Using Extension Cords
• If you are using an extension cord outdoors, be sure it is marked with the suffi x
“W-A” (“W” in Canada) to indicate that it
is acceptable for outdoor use.
• Be sure your extension cord is properly wired and in good electrical
condition. Always replace a damaged
extension cord or have it repaired by a
qualifi ed person before using it.
• Protect your extension cords from sharp
objects, excessive heat and
damp or wet areas.
Recommended Minimum Wire Gauge
Nameplate
* Based on limiting the line voltage drop to
fi ve volts at 150% of the rated amperes.
for Extension Cords*
Amperes
0 - 2.0
2.1 - 3.4
3.5 - 5.0
5.1 - 7.0
7.1 - 12.0
12.1 - 16.0
16.1 - 20.0
Extension Cord Length
25'
18
18
18
18
16
14
12
READ AND SAVE ALL INSTRUCTIONS FOR FUTURE USE.
50'
18
18
18
16
14
12
10
75'
18
18
16
14
12
10
100'
18
16
14
12
10
150'
16
14
12
12
WARNING
To reduce the risk of injury, always
unplug tool before attaching or
removing accessories or making
adjustments. Use only specifi cally
recommended accessories. Others
may be hazardous.
Installing Bits (Fig. 1)
This tool is designed with a universal drive
system that accepts SDS, SDS Plus and
Hilti TE-C bits. Always clean and lubricate
the shank of the bit before installing it into
your tool to help prevent heat build-up and
protect the bit shank from wear due to abrasive concrete dust.
Fig. 1
Recesses in
bit shank
Marks on
chuck collar
WARNING
To reduce the risk of injury, always
use a side handle when using
this tool. Always brace or hold
securely.
Adjusting the Depth Gauge (Fig. 2)
Fig. 2
Drilling
Depth
1. To adjust the position of the depth rod,
loosen the side handle.
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. Tighten the side handle securely.
1. Pull the chuck collar back toward the
tool.
2. Line up the recesses on the shank of the
bit with the marks on the chuck collar
as shown. Then, insert the bit into the
spindle as far as possible.
3. Release the chuck collar, locking the bit
into position. Rotate the bit slightly to be
sure it is locked securely.
4. To remove the bit, pull the chuck collar
back toward the tool, twist bit slightly and
remove.
6 7
OPERATION
WARNING
To reduce the risk of injury, wear
safety goggles or glasses with side
shields. Unplug the tool before
changing accessories or making
adjustments.
Selecting Action (Fig. 3)
MILWAUKEE 7/8" Rotary Hammers have
two settings: drilling only and hammering
with rotation.
Fig. 3
Hammer
symbol
1. To select drilling only, rotate the shift
knob 180° in the direction of the double
arrow so that the tab portion of the knob
points toward the “Drill” symbol. Do not
shift the tool when it is running or coasting to a stop.
When drilling in wood or steel, shift knob
to drilling and use chuck adapter kit (see
“Accessories”).
2. To select hammering with rotation, rotate
the shift knob 180° in the direction of the
double arrow so that the tab portion of
the knob points toward 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.
Drill
symbol
Using the Forward/Reverse Switch (Fig. 4)
Fig. 4
Reverse
Forward
Reverse
Forward
1. For forward (clockwise) rotation, push
the forward/reverse switch to forward
as shown.
2. For reverse (counterclockwise) rotation, push the forward/reverse switch to
reverse as shown. Check the direction
of rotation beofre use. Although an interlock prevents Using forward/reverse
switch (Fig. 4) Check the direction of
rotation before use. Although an interlock prevents reversing the tool while
the motor is running, allow the motor to
come to a full stop before reversing.
Starting, Stopping & Controlling Speed
1. To start the tool, pull the trigger
2. To stop the tool, release the trigger.
3. To vary the driving speed, simply increase or decrease pressure on the
trigger. The further the trigger is pulled,
the greater the speed.
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 into the tool.
2. Turn the tool on, applying force to the bit
against a concrete or wood surface.
3. Turn the tool on and off every few seconds. In a short time, the tool will start
hammering. The colder the tool is, the
longer it will take to warm it up.
Operation
Position the tool, grasp the handles fi rmly
and pull the trigger.
Always hold the tool securely using both
handles and maintain control. Use only
enough pressure to hold the tool in place
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.
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.
NOTE: 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 Rotary Percussion Core Bits (Fig.
5 - 8)
Core bits are useful for drilling larger holes
for conduit and pipe. MILWAUKEE Thin Wall
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.
NOTE: For core bits 1- 1/4" and larger,
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 (Fig. 5).
Fig. 5
2. Insert the adapter into the nose of the
tool as described in “Installing Bits”. Set
the hammer/drill shift knob to hammering with rotation.
3. Press the center pin fi rmly against your
center mark, hold the tool fi rmly and pull
the trigger (Fig. 6).
Fig. 6
NOTE: If a center pin and guide plate are
not available, use a template or notched
board to start the hole (Fig. 7).
Fig. 7
8 9
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
as shown, and run it briefl y in forward
to loosen the core bit from the adapter
(Fig. 8).
Fig. 8
NOTE: To make holes deeper than 3",
remove the core bit, break and remove the
core. Resume drilling.
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.
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 damage. Check for loose
screws, misalignment, binding of moving
parts, improper mounting, broken parts and
any other condition that may affect its safe
operation. 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
necessary 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.)
• T esting to assure proper mechanical and
electrical operation
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.
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 thinner,
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.
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.
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.
Carrying case (For Cat. No. 5366-21,
5368-21) Cat. No. 48-55-5378
FIVE YEAR TOOL
LIMITED WARRANTY
Every MILWAUKEE tool is tested before
leaving the factory and is warranted to be
free from defects in material and workmanship. MILWAUKEE will repair or replace (at
MILWAUKEE’s discretion), without charge,
any tool (including battery chargers) which
examination proves to be defective in material or workmanship from fi ve (5) years
after the date of purchase. Return the tool
and a copy of the purchase receipt or other
proof of purchase to a MILW AUKEE Factory
Service/Sales Support Branch location or
MILWAUKEE Authorized Service Station,
freight prepaid and insured. This warranty
does not cover damage from repairs made
or attempted by other than MILW AUKEE authorized personnel, abuse, normal wear and
tear, lack of maintenance, or accidents.
The warranty period for V28 Battery Packs
is two (2) years from the date of purchase.
The warranty period for Ni-Cd battery Packs,
Flashlights, Radios are warranted for one (1)
year from the date of purchase.
THE REPAIR AND REPLACEMENT REMEDIES DESCRIBED HEREIN ARE EXCLUSIVE. IN NO EVENT SHALL MILWAUKEE
BE LIABLE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES,
INCLUDING LOSS OF PROFITS.
THIS WARRANTY IS EXCLUSIVE AND IN
LIEU OF ALL OTHER WARRANTIES, OR
CONDITIONS, WRITTEN OR ORAL, EXPRESSED OR IMPLIED FOR MERCHANTABLILITY OR FITNESS FOR P ARTICULAR
USE OR PURPOSE.
This warranty gives you specifi c legal rights.
Y ou may also have other rights that vary from
state to state and province to province. In
those states that do not allow the exclusion of
implied warranties or limitation of incidental
or consequential damages, the above limitations or exclusions may not apply to you.
This warranty applies to the United States,
Canada, and Mexico only.
Chuck Adapter Kit
Cat. No. 48-66-1370 includes:
• Chuck Adapter
Cat. No. 48-03-3005
• 1/2" Chuck
Cat. No. 48-66-1365
• Set Screw
Cat. No. 06-75-3150
10 11
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