TM 5-6115-465-12
TO 35C2-3-446-1
NAVFAC P-8-625-12
TM 06858B/06859D-12
Section VI. ACOUSTIC SUPPRESSION KIT
(2) Wipe controls access door window dry with a
4-26. GENERAL.
clean, soft cloth.
The acoustic suppression kit lowers the noise level of
(3) Clean all surfaces of the acoustic suppression
the generator set to 70 dB(A) at 7 meters. It consists of
kit with mild soap and water to remove deposits of grease,
replacement panels for the sides, roof, ends, and bottom of
oil, or other foreign material. Allow to air dry.
the generator set.
The generator set is operated and maintained in the
NOTE
same manner however, access to components and opera-
tion will change slightly due to configuration changes.
When acoustic suppression kit is installed,
draining of cooling system and fuel system is
The overall weight and size of the generator set will
difficult. Drain lines must be fabricated to
increase with the acoustic suppression kit installed. (Refer
drain fluids overboard.
to para 1-6.)
All side doors on the generator set must be closed for the
acoustic suppression kit to function properly.
INSTALLATION AND REMOVAL,
The inlet and discharge doors on the roof of the acoustic
suppression kit must be open during operation and closed
CAUTION
during periods of nonuse. The discharge door must also be
open to gain access to the radiator access door.
Do not allow components with rubber seals to
slide on surfaces. Damage to rubber seals will
The generator set is operated and maintained in the
result.
same manner however, access to components and opera-
tion will change slightly.
a. Prepare generator set for installation of acoustic
The ground wire must be installed on the generator set
suppression kit.
prior to mounting on a trailer. The ground stud cannot be
reached due to the side panel skirts.
WARNING
For best sound attenuation results, tape all loose tools or
Do not use hoisting equipment with maximum
anything that may rattle. Ensure all trailer hardware is
capacity less than 5,000 pounds. Do not allow
checked for tightness. Ensure fire extinguisher bracket is
generator set to swing while suspended. Do not
free of rattles.
allow personnel under generator set or compo-
nents of acoustic suppression kit when hoisted
When moving generator set with a forklift, both side
or lifted. Death or severe injury may result.
panel skirts must be in the raised position.
When positioning or moving generator set, 1-inch
CAUTION
ground clearance must remain between bottom tray and
surface to prevent damage.
Use a minimum bridle of 5 feet on the hoisting
sling to avoid undue side pressure on the lifting
Do not skid unit with bottom tray installed.
frame.
When troubleshooting the generator set with the acous-
NOTE
tic suppression kit installed, schematics are stored behind
the document box mounted on the rear panel.
If generator set is trailermounted, generator set
Other doors on the acoustic suppression kit provide for
must be removed from trailer and rubber isola-
access to components on the generator set. (Refer to figure
tors supplied with kit placed between the gener-
2-14.)
ator set and trailer mounting surface. When
installing the generator set, attach anti-rotation
a. Inspect the acoustic suppression kit components.
clips, and attach the mounting bolts. Bolts
(Refer to figure 2-14.)
should be torqued to 5 ft- lb (6.80 N.m), and
(1) Open doors and inspect for dirt, oil, water, or
jam nuts installed. (Jam nuts are common hard-
other foreign material.
ware items.) Once the acoustic suppression kit
is installed, gen set will require 1 inch ground
(2) Inspect for defective seals; proper mounting
clearance. Do not skid gen set with acoustic
and loose, damaged, or missing components.
suppression kit installed. Do not fork lift unless
both side panel skirts are in the raised position.
(3) Close doors and inspect for proper seal with
If generator set is trailer mounted, the trailer
enclosure.
brackets supplied with kit must be installed.
(4) Inspect controls access door window for
The brackets allow for the extended length
cracks, improper seal, or other damage.
when the acoustic suppression kit is installed.
b. Install acoustic suppression kit on generator set.
2-14.)
(1) Carefully clean controls access door window
with a mild cleaner.
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