Milwaukee Tool 1660-6 - Manual (Page 3)

4 5
Fig. B Fig. C
Fig. A
GROUNDING
WARNING Improperly connecting the
grounding wire can result in the risk of elec-
tric shock. Check with a qualifi ed electrician
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 MILWAUKEE
service facility before use. If the plug will not
fi t the outlet, have a proper outlet installed by
a qualifi ed electrician.
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 accord-
ance 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 insula-
tion system which satisfi es OSHA requirements
and complies with the applicable standards of
Underwriters Laboratories, Inc.,
the Canadian Standard Asso-
ciation and the National Elec-
trical Code. Double Insulated
tools may be used in either of
the 120 volt outlets shown in
Figures B and C.
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.
EXTENSION CORDS
SPECIFICATIONS
Tool Wood Mild Steel
Cat. No.
Volts
AC/DC
No Load
RPM
Twist
Drills Selfeed
Bits
Hole
Saws
Auger
Bits
Ship Au-
ger Bits
Flat Boring
Bits
Twist
Bits
Hole
Saws
1610-1
1630-1
1660-1
1660-6
1663-20
120 AC
120 AC
120 AC/DC
120 AC/DC
120 AC
650
1000
450
450
115-450
1/2"
1/2"
1/2"
1/2"
1/2" 2-9/16"
2-1/4"
3"
3"
3"
3-1/2"
3"
4"
4"
4"
1-1/2"
1-1/2"
1-1/2"
1-1/2"
1-1/2" 1-1/2"
1-1/2"
1-1/2"
1-1/2"
1-1/2" 1-1/2"
1-1/4"
1-1/2"
1-1/2"
1-1/2" 1/2"
1/2"
1/2"
1/2"
1/2" 2-1/4"
1-3/4"
2-5/8"
2-5/8"
2-5/8"
READ AND SAVE ALL
INSTRUCTIONS FOR FUTURE USE.
* Based on limiting the line voltage drop to fi ve volts at
150% of the rated amperes.
Recommended Minimum Wire Gauge
For Extension Cords*
Extension Cord Length
Nameplate
Amperes
25' 50' 75' 100' 150'
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
18
18
18
18
16
14
12 18
18
18
16
14
12
10 18
18
16
14
12
10 18
16
14
12
10 16
14
12
12
Chuck Removal
This tool is equipped with a threaded spindle to hold
the chuck. Before removing the chuck, unplug the
tool and open the chuck jaws. A left-handed thread
ASSEMBLY
WARNING To reduce the risk of injury,
always unplug tool before changing or re-
moving accessories. Only use accessories
specifi cally recommended for this tool. Others
may be hazardous.
OPERATION
Removing and Replacing Quik-Lok ® Cords
MILWAUKEE's exclusive Quik-Lok ® Cords provide
instant fi eld replacement or substitution.
1. To remove the Quik-Lok ® Cord, turn the cord nut
1/4 turn to the left and pull it out.
2. To replace the Quik-Lok ® Cord, align the connec-
tor keyways and push the connector in as far as it
will go. Turn the cord nut 1/4 turn to the right to lock.
Pipe Handle
Thread pipe handle into the threaded hole in the
motor housing.
Installing Bits into Keyed Chucks
Fig. 1
Fig. 2
1. Unplug tool.
2. Open the chuck jaws wide enough to insert the
bit. Be sure the bit shank and chuck jaws are
clean. Dirt particles may prevent the bit from
lining up properly.
3. Insert the bit into the chuck. Center the bit in the
chuck jaws and lift it about 1/16" off of the bottom.
Then, tighten the chuck jaws by hand to align the
bit.
4. Place the chuck key in each of the three holes in
the chuck, turning it clockwise as shown. Tighten
securely.
5. To remove the bit, insert the chuck key into one of
the holes in the chuck and turn it counterclockwise.
WARNING To reduce the risk of injury,
always wear eye protection.
Bit Binding
WARNING To reduce the risk of per-
sonal injury when drilling, always hold tool by
the insulated gripping surfaces when perform-
ing 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.
WARNING When drilling, always
hold the drill securely using the pipe handle,
or brace the drill against a solid fi xed ob-
ject in preparation for a suddent reaction.
When drilling, never use your body to brace drill.
Never put your hands (or other body parts)
between the part of the drill being braced and
the object it is being braced against. Hands
(or other body parts) that are in the path of the
reaction can be pinched, crushed, and broken.
Fig. 3
screw is located inside the chuck to prevent the
chuck from loosening when the tool is operated
in reverse direction. Remove the screw by turning
it clockwise. To remove the chuck, hold the tool
so that only the side of the chuck rests fi rmly and
squarely on a solid workbench. Insert the chuck key
or a chuck remover bar in one of the keyholes. Turn
the chuck so the key is at about a 30° angle to the
bench top and strike the key sharply with a ham-
mer so the chuck turns
in a counterclockwise
direction (looking from
the front of the tool).
This should loosen the
chuck from the spindle
which has a right hand
thread making it easy
to remove the chuck
by hand.
NOTE: When replac-
ing the chuck, always
replace the left hand thread screw in the chuck.
Fig. 4
1 2