Removing Bits; Chuck Removal - Craftsman 315.10419 Owner's Manual

OPERATION (Cont.)
Fig. 6
A~---:2~,...,L.-. SLEEVE
CHUCK
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WORK BENCH EDGE
1]]-
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Fig.7
CHUCK REMOVAL
The chuck must be removed in order to use some ac-
cessories. To remove:
1. Plug your electric drill into power supply, place it
in reverse position, engage auto-chucker
mechanism, then depress the trigger of the
switch until the chuck jaws open fully. DO NOT
RACHET AGAINST THREADS.
2. DISCONNECT YOUR ELECTRIC DRILL FROM
POWER SUPPLY SOURCE.
3. Line up hole in spindle with hole in gear housing
and insert a 1/8 inch diameter nail or pin into hole
in spindle shaft. See Figure 8.
4. Tighten chuck on spindle with a 718" open end
wrench. See Figure IO.NOTE: You must first
tighten the chuck so that the chuck screw can
easily be loosened.
Page 6
~WARNING
WHEN REMOVING SMALL
DIAM ETER DRILL BITS (1/8" OR LESS) RELEASE
THEM BY MAKING SEVERAL SHORT STARTS
AND STOPS WITH YOUR AUTO·CHUCKER
FAILURE TO DO SO COULD RESUL T IN THE BITS
BEING THROWN FROM YOUR DRILL
RESULTING IN POSSIBLE SERIOUS INJURY
....WARNING DO NOT ATTEMPT TO GRASP
DRILL BIT WHILE CHUCK IS STILL ROTATING.
THE DRILL BIT COULD STILL BE TIGHT IN THE
CHUCK JAWS AND CAUSE SERIOUS PERSONAL
INJURY
REMOVING BITS
See Figure 6.
1. Place the direction of rotation lever in reverse.
2. Point yourdrill downward away from your body as
as shown in Figure 6.
3. SLOWLY start your drill by depressing the switch
trigger.
4. Grasp the sleeve of your drill's Auto-Chuck and
pull toward the gear housing. Full speed is need·
ed to loosen chuck jaws from drill bit. NOTE: If
bit fails to loosen, repeat this procedure and pull
harder on the sleeve. After prolonged use, the
drill chuck may be so tight that the bit cannot be
removed by this procedure. If this occurs place
the edge 01 the chuck sleeve against work bench
edge and push your drill down hard while runn-
ing at full speed in reverse. See Figure 6.
5. Release the sleeve as soon as the drill bit is loose
in the chuck jaws.
6. Let the drill bit fall freely to work surface.
When drilling metals use a light oil on the drill bit to
keep it from overheating. The oil will prolonllthe life
of the bit and increase the drilling action.
If the bit jams in workpiece or if the drill stalls, stop
the tool immediately. Remove the bit from the
workpiece and determine the reason for jamming.
DRILLING
When drilling hard smooth surfaces use a center
punch to mark desired hole location. This will pre-
vent the drill bit from slipping off center as the hole
is started. However, the variable speed feature
allows starting holes without center punching if
desired. To accomplish this, simply operate your
electric drill at a low speed until the hole is started.
The material to be drilled should be secured in a vise
or with clamps to keep it from turning as the drill bit
rotates.
Hold your electric drill firmly and place the bit at the
point to be drilled. Depress the switch trigger to start
your drill.
Move the drill bit into the workpiece applying only
enough pressure to keep the bit cutting. Do not force
your drill or apply side pressure to elongate a hole.
Let your drill and bit do the work. See Fig. 7.