TM 10-3930-669-20 (3) Install  air  feed  (16)  on  blower  (6)  with  washer (18) and screw (17). (4) Install  two  screws  (15),  lock  washers  (14),  and nuts (13) on blower (6) and air feed (16). (5) Install washer (11), screw (10), lock washer (9), and nut (8) on base ducting (12) and blower (6). (6) Install hose (5) and two clamps (4) on blower (6) and plate (7). 6-9