Panasonic 7441LF, Service Manual

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4 Disassembly and Assembly Instructions
4.1. How to disassemble Plate hoot and Keyless chuck.
Ref. No. 1A Procedure 1A Removal of Plate hook.
(Removal)
1. Loosen a screw.
2. Take out the plate hook.
Ref. No. 2A Procedure 2A Removal of the Housing.
NOTE:
When attaching or removing a bit, disconnect battery pack from tool.
1. Set the clutch handle to position and select “LOW” position.
2. Turn the lock collar counterclockwise (looking from the front) to open
the chuck jaws.
3. Use a screwdriver to turn the chuck fastening screw inside the chuck
clockwise direction of the arrow, and remove the screw.
NOTE:
If the chuck fastening screw will not come loose, insert the allen
wrench into the chuck and lightly tap in the clockwise direction with a
hammer to tighten the chuck, and then loosen the chuck fastening
screw.
4. Insert the allen wrench into the chuck, and turn counterclockwise
direction in the arrow with holding the unit by the vise to remove the
chuck.