100-412-182 REV. 06 61
5.7 Assembly the Acoustic Stack
5.7.1 Assembling the 40 kHz Acoustic Stack
(Shown with Rectangular Horn Secured in the Vise)
CAUTION General Warning
The following procedure must be performed by a setup person. If
necessary, secure the largest portion of a square or rectangular horn
in a soft jawed (brass or aluminum) vise. NEVER attempt to assemble
or remove a horn by holding the converter housing or the booster
clamp ring in a vise.
CAUTION General Warning
Do not use Mylar washers on 40 kHz stacks. Use only silicon grease.
This prevents fretting corrosion at the mating interfaces and ensures
good thermal conductivity along the stack.
Table 5.7 Tools
Tool EDP Number
40 kHz Torque Wrench 101-063-618
40 kHz Spanner Wrench 201-118-024
Silicone Grease 101-053-002
Table 5.8 Assembling the 40 kHz Acoustic Stack
Step Action
1
Clean the mating surfaces of the converter, booster, and horn. Remove
any foreign material from the threaded holes.
2
Apply a drop of Loctite 290 threadlocker (or equivalent) to the studs for
the booster and horn.
3
Install the threaded stud into the top of the booster; torque to 70 in - lbs,
7.9 N·m, and let cure for 30 minutes.
4
Install the threaded stud into the top of the horn; torque to 70 in - lbs,
7.9 N·m, and let cure for 30 minutes.
5
Coat each interface surface with a thin film of silicon grease - but do not
apply silicon grease to a threaded stud or tip.
6 Screw the converter to the booster.
7 Torque to 95 in-lbs, 70.7 N·m.
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