MTS Tension Compression Grips - Manual (Page 14)

2-8 Operation
12. Apply full system hydraulic pressure according to applicable
system procedures. Use extreme care not to cause rapid
actuator movement when performing the following steps.
WARNING
Placing hands in the crush zone between the Grip faces
with hydraulic pressure applied and the actuator moving is
dangerous.
This can result in injury to personnel and damaging forces
being applied to the specimen.
Keep hands out of the crush zone while performing the following steps.
13. Adjust the position of the actuator or crosshead until the
specimen just contacts the upper grip base.
14. Remove system hydraulic pressure.
Place upper
collar over
specimen and
rest it on lower
collar
Extend actuator until
specimen contacts
upper grip base
Thread adapter
on specimen
Slide upper
collar over
threaded
adapter
Secure with socket
head cap screws
Ensure equal
measurement all
the way around
Figure 2-5. Threaded Specimen Installation (Upper Grip)