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For Machines Mfg. Since 5/11
13" x 40" Heavy 13
®
EVS Lathe
SERVICE
To replace the shear pin:
1. DISCONNECT LATHE FROM POWER!
2. Rotate the shroud washer on the leadscrew
shown in Figure 131, so that the cutout
lines up with the shear pin head.
Figure 131. Shroud washer and shear pin alignment.
Cutout
Shear Pin
Head
Shroud
Washer
Figure 132. Shear pin access.
3. Put on safety glasses.
4. Move the retaining ring shown in Figure
132 away from the shroud washer.
5. To make enough room to remove the shear
pin, move the shroud washer away from the
shear pin and against the retaining ring, as
shown in Figure 132.
6. Use the magnet to remove the shear pin
head, then rotate the lathe spindle to line
up the inner and outer bores, as shown in
Figure 133. Next, use the magnet to remove
the other half of the broken shear pin when
it becomes visible.
Figure 133. Shear pin bores aligned.
Outer Bore
Inner Bore
7. Insert the blow gun tip into the shear pin
hole, blow out the hole with compressed air,
then put a drop of oil in the hole.
8. Insert the new shear pin into the bore, as
shown in Figure 134.
Note: 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 and install a
new shear pin later.
Instead, take the time to carefully line up
the two bores. You may need to file a slight
chamfer on the end of the pin to make it
easier to insert.
Figure 134. New shear pin installed in bore.
Shear Pin