Southbend SB1059F User Manual

For Machines Mfg. Since 3/11

EVS Toolroom Lathe w/DRO

-85-

  Move the retaining ring shown in Figure 

133 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.

  Use the magnet to remove the shear pin 

head.

 

Rotate the lathe spindle to line up the inner 
and outer bores, as shown in Figure 134, 
and use the magnet to remove the other half 
of the broken shear pin.

  Put on safety goggles, insert the blow gun tip 

into the shear pin hole and blow out the hole 
with compressed air.

  Put a drop of oil in the hole, then insert the 

new shear pin into the bore, as shown in 
Figure 135.

If the pin does not freely slide into the 

bore, DO NOT use a hammer on the pin or 
you may permanently damage the shear 
mechanism and bore, which would make 
it nearly impossible to remove if it breaks 
again. Instead, take the time to carefully 
line up the two bores so it slides in easily. 
Chamfer the end of the pin if necessary to 
make it easier to insert.

  With the pin completely seated in the bore 

and the head flush with the leadscrew 
shoulder, slide the shroud washer against 
the shoulder, then rotate the washer 180° to 
completely cover the head of the shear pin, 
as shown in Figure 136.