Grizzly G0492 owner manual Replacing the Jaws, To remove a set of jaws

Replacing the Jaws

The three-jaw scroll chuck has removable hard- ened steel jaws (Figure 11). The outside of the jaws are used to hold the workpiece from the outer diameter.

Figure 11. Chuck and jaw selection.

Numbered from 1–3, the jaws must be used in the matching numbered jaw guides, see Figure 12.

Jaw Guide #1
	Jaw Numbers

Figure 12. Jaw guide number.

Note: The chuck need not be removed from the spindle to swap the jaws.

-18-

To remove a set of jaws:

1.DISCONNECT POWER TO THE LATHE/ MILL!

2. Place a piece of wood over the ways to pro- tect them from potential damage.

3. Turn the chuck key counterclockwise and back the jaws out.

4. Clean the jaw mating surfaces and apply a film of white lithium grease to the mating sur- faces.

5. Set the old jaws aside in a safe place free of moisture and abrasives.

6.Rotate the chuck key clockwise until you see the tip of the scroll-gear lead thread just begin to enter jaw guide #1 (see Figure 13).

Lead Thread

Figure 13. Lead thread on scroll gear.

7.Insert jaw #1 into jaw guide #1 and hold the jaw against the scroll gear.

8.Rotate the chuck key clockwise one turn to engage the tip of the scroll-gear lead thread into the jaw. Pull on the jaw now and it should be locked into the jaw guide.

9. Repeat the steps on the remaining jaws.

—If installed correctly, the three jaws will converge together at the center of the chuck.

—If the jaws do not come together, repeat this procedure until they do.

G0492 12" X 36" Combo Lathe/Mill