Southbend SB Chuck Removal, Registration Marks, To remove the chuck, O P E R A T I O N

	O P E R A T I O N
13" Heavy 13® Gearhead Lathe		For Machines Mfg. Since 5/11

7.Verify that the chuck fits the spindle properly by checking for any gaps between the mating surfaces.

—If there are no gaps, proceed to Step 8.

—If there is a gap, remove the chuck, re- clean the mating surfaces carefully, and re-install. If the problem persists, contact our Tech Support.

8.Verify that the chuck/spindle tapers are seated firmly together by removing the chuck, per the Chuck Removal instructions, and pay close attention to how easily the tapers release.

—If it was necessary to bump the chuck or use a mallet to release the tapers, then they are seating together properly.

—If the tapers released easily with little intervention, they are not seated together firmly as required. Remove the chuck, re- clean the mating surfaces carefully, and re-install. If the problem persists, contact our Tech Support.

Registration Marks

Lightly stamp registration marks across the mating seams of chuck components. These marks will help you re-install the chuck in the same position after removal, which ensures consistent chuck balance and turning results, and allows the same camlocks and studs to operate together for consistent locking and unlocking.

Camlock	Spindle & Chuck
	Registration Marks
Spindle	Chuck
	Halves
Marks	2-Piece
for Chuck
	Direct Mount
Reassembly
	Camlock Chuck

Figure 32. Registration mark locations.

Chuck Removal

To remove the chuck:

1.DISCONNECT LATHE FROM POWER!

2.Use an appropriate lifting, support, or protective device to protect the ways and support the chuck (refer to Installation & Removal Devices on Page 32).

3.Loosen the camlocks by turning the key counterclockwise until each of the cam lines are aligned with its corresponding spindle mark (see Figure 33).

Cam line aligned with spindle mark

Figure 33. Camlock is fully loosened when the cam

line is aligned with the spindle mark.

Tip: Camlocks can become very tight. A cheater pipe may be used as a last resort to add leverage when loosening. After loosening, you may need to wiggle the chuck key in the camlock to fully disengage the stud.

4.Using a dead blow hammer or other soft mallet, lightly tap around the outer circumference of the chuck body to loosen it from the spindle.

5.Remove the chuck from the spindle, using a light rocking motion to carefully slide the studs out of the cam holes.

—If the chuck does not immediately come off, rotate it approximately 60° and tap it again. Make sure all the marks on the cams and spindle are in proper alignment for removal.

-34-