100-412-183 REV. 13 117
8.2.2.1 Stack Torque Values
For a 20 kHz System
Table 8.3 Stack Torque Values
Frequency Torque
20 kHz 220 in·lb (24.85 N·m)
30 kHz 185 in·lb (21 N·m)
40 kHz 95 in·lb (10.73 N·m)
Table 8.4 Stack Reassembly for a 20 kHz System
Step Action
1
Clean the mating surfaces of the converter, booster, and horn. Remove any
foreign material from the threaded holes.
2
Install the threaded stud into the top of the booster. Torque to 450 in·lb
(50.84 N·m). If the stud is dry, apply 1 or 2 drops of a light lubricating oil
before installing.
3
Install the threaded stud into the top of the horn. Torque to 450 in·lb
(50.84 N·m). If the stud is dry, apply 1 or 2 drops of a light lubricating oil
before installing.
4
Install a single Mylar plastic film washer (matching the size of the washer to
the stud) to each interface.
5 Assemble the converter to the booster and the booster to the horn.
6 Torque to 220 in·lb (24.85 N·m) at each interface.