Milwaukee 4253-1 Manual Del Operador página 7

Typical Operation
1. Insert the bit into the chuck or socket (see "Keyed
Chuck" or "Morse Taper Socket" and "Using Twist
Drills" and "Using MILWAUKEE STEEL HAWG™
Cutters").
2. Place the magnetic drill press on a prepared sur-
face.
3. Position the unit so that the tip of the drill bit is
directly over the center of the hole to be drilled.
4. Push the magnet button. The red indicator light
will turn on.
5. Attach the safety chain if drilling overhead or on a
vertical surface.
6. Check the gear speed setting and change if
required.
7. Push the forward or reverse button as required.
8. Drill hole (see "Using Twist Drills" and "Using
MILWAUKEE STEEL HAWG™ Cutters").
9. Push the "Drill Off" button.
10.Remove the chain (if drilling overhead or on a
vertical surface).
11.Push the magnet button. The red indicator light
will turn off.
Using the Adjustable Base (4203 only)
1. Turn the drill motor off.
2. Position the magnetic base so that the drill bit
is near the desired hole location and push the
magnet button. The red indicator light will turn on.
3. Loosen the adjusting handle located at the back
of the housing base. Move the housing to position
the drill bit over the center of the hole. Tighten the
adjusting handle securely.
Keyed Chuck (Select Models)
1. Open the chuck jaws wide
enough to insert the bit. Be
sure the shank and the
chuck jaws are clean. Dirt
particles may prevent the bit
from lining up properly.
2. When using drill bits, insert
the bit into the chuck. Center
the bit in the chuck jaws and
lift it about 1/32" off of the
bottom. Tighten the chuck jaws by hand to align
the bit.
3. Place the chuck key in each of the three holes in
the chuck, turning it clockwise as shown below.
Tighten securely.
4. To remove the bit, insert the chuck key into one
of the three holes in the chuck and turn it coun-
terclockwise.
- Clockwise (Tighten)
- Counterclockwise (Loosen)
Morse Taper Socket (Select Models)
These drills are supplied with a No. 3 Morse Taper
Socket.
To insert a bit or adapter into the socket:
1. Make sure the taper is clean and
lightly oiled. Foreign material can
cause misalignment.
2. Insert the taper into the socket and
rotate the taper until the bit tang
slides into the slot at the top of the
socket.
3. Press the taper firmly into the socket,
or use the feed handle to press
the bit against a piece of wood.
To remove a bit or adapter from the
socket:
1. Unscrew the knurled collar and
remove the entire Morse Taper
Socket.
2. Strike the bit tang firmly with a soft
metal mallet or strike the bit tang
firmly on a wood or soft metal surface.
3. Replace the Morse Taper Socket by
aligning the notches with tabs on the
drill.
4. Replace the knurled collar and
tighten.
APPLICATIONS
To reduce the risk of
DANGER
injury, always keep
hands, rags, clothing, etc. away
from moving parts and chips. Do
not try to remove chips while the
cutter is rotating. Chips are sharp
and can pull objects into moving
parts.
When preparing to drill, align the bit with the spot to
be drilled. When proper alignment is established, en-
ergize the magnet and start the drill motor. A pilot hole
is recommended for drilling holes larger than 1/2"
in diameter. When drilling, apply only enough force
to produce a curled chip. Applying too little force will
result in small broken chips and increased drilling
time. Applying too much force will cause overheating
of the bit resulting in short bit life. Overheating of the
bit can be noticed when drill bit and chips turn brown
or blue. Excessive force can cause the drill to slow
down to a point where drilling time will increase. The
use of cutting lubricants will reduce drilling heat and
increase drill bit life.
Select the proper tap and drill combination. Refer to
the "Maximum Recommended Capacity" chart. On
two-speed drill motors, use the low speed shift set-
ting. Drill the hole as described above. If possible, tap
the hole before moving the base to another position.
This eliminates the need to align the tap with the hole.
Always use a quality tapping wax or oil for smooth
cutting and avoid damage to the tap or workpiece.
Pipe taps are not recommended
1. Insert the tap into the chuck. Tighten the chuck
so that the chuck jaws grip the round portion
of the shank and not the flats of the tap.
2. For tapping existing holes, align the tap so it is
centered with the hole and reenergize the base.
7
Drilling
Tapping