MTS Landmark Tabletop - Manual (Page 92)

c) If the TIR is 0.038 mm (0.0015 in) or less, the force transducer is accurately aligned with the actuator.
This completes the procedure.
If the TIR is greater than 0.038 mm (0.0015 in), the force transducer needs to be aligned with the
actuator. Continue to the next step.
4. Raise the load unit.
The load unit must be raised above the mounting surface to access the threaded fasteners of the force
transducer. The threaded fasteners are accessed from the bottom of the load unit.
a) Loosen the load unit’s legs from their mounting surface.
b) Put blocks of wood under the load unit’s legs to increase the clearance between the load unit and its
mounting surface.
c) The load must be raised high enough to use a torque wrench on the force transducer’s threaded
fasteners.
5. Adjust the force transducer alignment.
a) Loosen the force transducer just enough so that it will move when tapped by a nylon mallet.
• Loosen the threaded fastener that holds the axial force transducer.
• Loosen the eight threaded fasteners that hold the axial-torsional force transducer.
b) Based on the TIR results, tap the force transducer so it moves enough to produce an acceptable TIR
deviation.
c) Go to Step 3 on page 101 and determine if the force transducer and actuator are aligned.
• If the force transducer is accurately aligned with the actuator, finish this procedure.
• If the force transducer is not accurately aligned with the actuator, return to Step B of this step.
d) Torque the nuts (or screws) as follows.
• For an axial system, tighten the center nut only to 85 N·m (62 lb·ft).
92 MTS Landmark™ Tabletop Load Units Product Information
Maintenance