How to relplace the 4-jaw chuck

- Sep 24, 2019-

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     1.Remove the 3-jaw chuck by rotating this six parts with a wrench;

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2.Install this part in the designated position of the 4-jaw chuck  and

                                 ensure that the scale line in the right position;

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     3.Install the locking screw and ensure that the locking screw is in the locating slot;

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4.Rotate  the part and ensure that the semicircular groove coincides with the chuck installation hole;

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5.Rotate the six parts with a wrench to lock the chuck