Replacing the Keyless Chuck
1.
Set the rotational direction switch to the middle position.
Caution: To minimize the risk of accidental activation,
always ensure the rotational direction switch is in the
neutral (middle) position before performing any
maintenance work on the drill, as well as during
transportation and storage.
2.
The keyless chuck is secured with a securing screw to prevent it
from unintentionally coming loose from the drill spindle.
Remove this screw by completely opening the chuck and
unscrewing the screw, which has a left-handed thread, in a
clockwise direction.
3.
Remove the chuck as follows:
a)
Place the drill on a stable surface, such as a workbench.
b) Clamp the short end of an Allen key in the chuck.
c)
Turn the Allen key counterclockwise to loosen the chuck.
d) Remove the Allen key from the chuck and completely
unscrew the chuck by hand.
4.
Mount a new chuck onto the drill as follows:
a)
Screw the chuck clockwise onto the drill by hand.
b) Clamp the short end of an Allen key into the chuck.
c)
Turn the Allen key clockwise to tighten the chuck to a
tightening torque of approximately 177-221 inch-pounds
( 20-25 N-m ).
5.
Open the keyless chuck completely, and screw in the securing
screw counterclockwise, to a tightening torque of
approximately 35-44 inch-pounds ( 4-5 N-m ).
IMPORTANT : Salt water is corrosive and dissimilar metals
corrode quickly. To prevent problems with removing the drill
chuck, rinse the tool in fresh water after every use. Remove the
chuck at the end of the working day . Lube the spindle inside
and outside threads with silicone grease before reinstalling the
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