100-412-234 REV. 06 195
6. If necessary, remove the coupling studs
7. Tape a clean sheet of #400 grit (or finer) emery cloth to a clean, smooth flat surface. A piece of
glass is suitable
8. Hold the part to be conditioned at its lower end and carefully stroke it in one direction across the
emery cloth. Do not press down. the weight of the component provides enough pressure
9. Perform a second stroke. Rotate the part 1/3 around and stroke it twice across the cloth.
10.Turn the part the remaining 1/3 and repeat
11.Re-examine the interface and repeat steps 8, 9, and 10 until the surface appears clean and
smooth. This should not take more than 2 or 3 complete rotations of the part being reconditioned
12.Clean the threaded hole, using a clean cloth or paper towel
13.Replace the stud with a new one if removed. Torque the 3/8-24 studs to 290 inch pounds (32.77
Nm). Torque 1/2-20 studs to 450 inch pounds (50.84 Nm).Torque M8x1-1/4 studs to 70 inch
pounds (7.9 Nm)
14.Reassemble the stack and install it in the actuator, using the procedures in
5.8 Assemble the
Acoustic Stack
NOTICE
Use no more than two strokes in one position. Use the same number
of strokes at each location.
NOTICE
The use of a Branson torque wrench or the equivalent is
recommended. P/N 101-063-617 for 20kHz systems and 101-063-
618 for 40kHz systems.
CAUTION
Failure to follow torque specifications may cause the stud to loosen or
break, and the system to overload. The use of a Branson torque
wrench or equivalent is required.
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