Grizzly G9249 owner manual Mounting a Workpiece, Mounting a Chuck or Faceplate

5.Lightly tap the breaker bar with the dead blow hammer to loosen the chuck or faceplate counterclockwise from the spindle threads.

—If removing a chuck, open the jaws and slide the breaker bar between the jaws, as shown in Figure 24.

—If removing the faceplate, mount clamps on the faceplate and use the breaker bar in a similar manner.

Spindle Clamps

Figure 24. Loosening the chuck from the spindle

threads.

6.Carefully unthread and remove the chuck or faceplate counterclockwise from the spindle threads.

Mounting a Chuck or Faceplate

1.DISCONNECT LATHE FROM POWER!

2.Lay a chuck cradle or a layer of plywood over the bedways to reduce the risk of injury and to protect the precision ground surfaces of the bedways.

3.Clean debris from the threads of the spindle and chuck or faceplate, then apply a thin film of light machine oil.

4.Carefully and slowly rotate the chuck or face- plate clockwise onto the spindle until you feel resistance.

G9249  12" x 37" Belt Drive Gap Bed Lathe

5.Rotate the chuck or faceplate counterclock- wise a 1⁄4 turn, then quickly rotate it back clockwise to seat the threads.

Note: Attempting to overtighten the chuck or faceplate will make removal difficult and could damage the threads.

6.Firmly install both spindle clamps on the back of the chuck or faceplate.

Note: Make sure the spindle clamp tangs properly fit into the spindle groove before tightening the set screw (see Figure 22).

7.Remove the chuck cradle or plywood and any tools used before starting the lathe.

Make sure the chuck or faceplate is firmly secure on the spindle and remove the chuck key. Object thrown from the lathe could cause serious per- sonal injury or death to the operator or bystand- ers.

Mounting a

Workpiece

Typically, a workpiece is mounted in a 3-jaw chuck, a 4-jaw chuck, a faceplate, or between centers. There are, however, numerous other methods of workpiece mounting for a lathe that are beyond the scope of this manual. Whichever work-holding device you use, make sure that the workpiece is held firmly and centered to ensure safe and accurate operation.

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