Inspect the riveted components of the enclosure assembly. Replace rivets on the components if more
than half of the rivets on any surface have failed.
Inspect the acoustical foam on the inside of the sound enclosure. If acoustical foam is tom, scarred,
shows signs of overheating, or has come loose to impede airflow, call Direct Support Maintenance Per-
sonnel to replace it.
Position sound enclosure bracket (6) and install with six screws (5).
Position both halves of the air sound enclosure assembly in place on the sound enclosure bracket.
Install 18 thread-cutting screws (1) and star type lockwashers (2) first on the outlet enclosure, then
install 17 screws (1) and star type lockwashers (2) on the inlet enclosure.