14-34Change 3TM 9-2350-267-20CREW AFES - OPTICAL FIRE SENSING APPARATUS (OFSA): REMOVAL AND INSTALLATIONCAUTIONNote position of OFSA before removal.Installed position of OFSA is critical - install incorrect position.NOTERemoval procedures for all four fire sensingapparatuses are the same.ADisconnect electrical cable (1) from OFSA (2).BRemove two screws (3), two nuts (4), two lockwashers (5) andfour flat washers (6). Discard lockwashers.cRemove OFSA (2) from bracket.INSTALLATIONWARNINGInstall OFSA in same position as noted atremoval. If installed in wrong position, OFSAwill not be effective in detecting fires.AClean OFSA lenses (TM 9-2350-267-10).BReverse order of removal procedures using new lockwashers.When installing electrical cable (1), turn clockwise untilcable snaps in place.C Turn crew T/A panel Maintenance switch to horizontalposition.
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