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General Maintenance; Chuck Removal - Craftsman 172.64120 Operator's Manual

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GENERAL M AINTENANCE
Avoid u sing
s olvents when cleaning plastic parts. Most plastics are susceptible to damage from
various types of commercial solvents and may be damaged by their use. Use clean cloths to
remove dirt, dust, oil and grease, etc.
/_, WARNING:
Do not at any time let brake fluids, gasoline,
petroleum-based
products, penetrating
oils, etc., come in contact with plastic parts. Chemicals
can damage, weaken or destroy
plastic which
may result in serious personal
injury.
CHUCK
REMOVAL
(Figs.
17, 17a and
17b)
The chuck may be removed and replaced by
a new
one.
1. Lock the trigger switch by placing the
Forward / Reverse Selector Switch with Power
Lock-Off in center, or OFF position.
2. Insert a 5/16-in. or larger hex key into the jaws
of the chuck and tighten the chuck jaws securely.
3. Tap the hex key sharply with a mallet in a
clockwise direction (see Fig. 17). This will
loosen the screw in the chuck for easy removal.
4. Open the chuck jaws and remove the hex key.
Using a screwdriver, remove the chuck screw
by turning it in a clockwise direction (Fig. 17a).
Note that the chuck screw has left hand threads
and clockwise direction loosens instead of
tightens.
5. Insert the hex key back into the chuck and
tighten the chuck jaws securely. Tap sharply
with a mallet in a counterclockwise
direction
(see Fig. 17b). This will loosen the chuck
on the spindle. It can now be unscrewed and
remover by hand.
Fig. 17
Fig. 17a
Fig. 17b
TO RETIGHTEN
A LOOSE
CHUCK
(Figs.
18 and
18a)
The chuck may become loose on the spindle
and develop a wobble. Also, the chuck
screw may become loose, causing the chuck
jaws to bind and prevent them from closing.
To tighten:
1. Lock the trigger switch by placing the
Forward / Reverse Selector Switch with Power
Lock-Off in the center, or OFF position.
2. Open the chuck jaws.
3. Insert a 5/16 in. or larger hex key into the chuck
and tighten the chuck jaws securely. Tap the
hex key sharply with a mallet in a clockwise
direction. This will tighten the chuck on the
spindle (see Fig. 18).
4. Open the chuck jaws, and remove the hex key.
5. Tighten the chuck screw. Note that the chuck
screw has left hand threads and
counterclockwise
direction tightens instead
of loosens (see Fig. 18a).
Fig. 18
Fig. 18a
/k, WARNING:
The use of attachments
or accessories
that are not
|
recommended
for this tool might
be dangerous and could result in serious
1
injury.
Sears and other Craftsman _ outlets offer a large selection of Craftsman drill/driver
accessories designed for all your drill/driving
applications.
You may purchase kits and sets specifically for drilling and driving, twist drill bit sets,
a variety of power drill / driving bit sets, spade bit sets, carbide-tipped
masonry drill bit sets,
extra long bits, magnetic bit holders and more.
Visit your local Sears store or other Craftsman outlets or shop sears.corn/craftsman
for all
of the accessories for your drill/driver.
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