Southbend sb1016 owner manual Aligned shear pin bores

Model SB1016/SB1036 S E R V I C E For Machines Mfg. Since 7/09

7.Use the magnet to remove the shear pin head, then rotate the lathe spindle by hand to line up the inner and outer bores, as shown in Figure 156. Next, use the magnet to remove the other half of the broken shear pin when it becomes visible.

Inner Bore

Outer Bore

Figure 156. Aligned shear pin bores.

8.Blow out the shear pin hole with compressed air, and put a drop of oil in the hole.

9.Insert the new shear pin into the bore, as shown in Figure 157. If the pin does not freely slide into the bore, DO NOT hammer on the pin or you will mushroom the shear pin head, preventing installation. Instead, file a slight chamfer on the end of the pin to make it easier to align and insert.

New Pin

Figure 157. New shear pin installed in bore.

10.With the pin completely seated in the bore and the head flush with the leadscrew shoulder, slide the shroud washer against the shoulder, and rotate it 180° (see Figure 158) to cover the shear pin.

Rotate

Washer

180°

Figure 158. Rotating washer to cover shear pin.

11.Slide the retaining ring against the shroud washer, so the retaining-ring ears are offset from the hole in the shroud washer, as shown in Figure 159.

Retaining

Ring Ears

Figure 159. Offset positioning of retaining ring ears

and hole in shroud washer.

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