For Machines Mfg. Since 3/11

S E R V I C E

16-Speed Gearhead Lathe

To replace the shear pin:

1.DISCONNECT LATHE FROM POWER!

2.Remove the clutch front and side covers (see Figure 139).

Side Cover Removed

From Here

Clutch Front Cover

Figure 139. Location of clutch front cover (side cover

removed for photo clarity).

5.Move the retaining ring shown in Figure 141 away from the shroud washer, then move the shroud washer away from the shear pin and against the retaining ring. This will create room for you to remove the shear pin.

Retaining Ring

Figure 141. Shear pin access.

3.Rotate the shroud washer on the leadscrew (see Figure 140) so that the cutout lines up with the shear pin head.

Shear Pin

Shroud

Head

Washer

Cutout

Figure 140. Shroud washer and shear pin alignment.

4.Put on safety glasses.

If you fabricate your own shear pin, make sure to use the material and dimensions specified in Figure 138. Otherwise, the shear pin may not provide the intended protection and lathe damage could result.

6.Use the magnet to remove the shear pin head.

7.Rotate the lathe spindle to line up the inner and outer bores, as shown in Figure 142, and use the magnet to remove the other half of the broken shear pin.

Inner Bore

Outer Bore

Figure 142. Shear pin bores aligned.

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Southbend SB1053 owner manual To replace the shear pin, Shear pin access