Instron 2716 Series, Operating Instructions Manual

Page: 30 / 36

Chapter: Maintenance
30 M10-14402-EN
Shear Pin Replacement
Each wedge grip is equipped with a shear pin that is designed to fracture under certain
test conditions in order to protect other parts from damage.
Each shear pin has a knurled head and screwdriver slot. A short section near the pin
head is threaded for engagement at the front of the spindle. The remainder of the pin is
unthreaded and passes through the hole in the base shaft of the spindle pad into the
spindle.
Figure 4. Shear Pin Location
To remove a sheared pin, unscrew the pin head, then carefully tap out the unthreaded
fragment using a soft rod.
Align the holes on the spindle and spindle pad, then install the replacement shear pin.
Troubleshooting
Improper adjustments or a lack of maintenance cause most grip operating problems. To
help you when a problem develops,
Table 6 on page 31 suggests a probable cause and
recommends a remedy. If you are unable to solve a problem contact Instron Service.