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TM 55-1905-220-14-4
3-11.1. AIR SILENCER - MAINTENANCE INSTRUCTIONS.
a.  Two air silencers are mounted on the air inlet housing which is attached to the intake sid of the blower
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housing to reduce the sound level of the air entering the blower. The two silencers are mounted side by side
and form a shallow inverted vee atop the blower. A pair of silencers is used with each blower.
b.  Each silencer has a perforated steel partition welded into place parallel with the outside faces, dividing
the entire silencer into two sections. The engine side of this partition together with the outer shell forms an air
duct the entire length of the silencer. Air enters the silencer at both ends and flows through this duct to the
blower intake opening at the center portion. The other portion of the silencer - between the perforated partition
and the unbroken outer wall - is filled with sound absorbent, flame proof, felted cotton waste.
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