TM 10-3930-669-20 c. Installation. CAUTION • Area  around  filter  must  be  very clean. Any contaminants entering   transmission   oil   filter adapter will damage equipment. • Hoses    must    be    connected    in same   manner   as   noted   during removal or damage to transmission can result. (1) Coat surface of preformed packing (15) with a light coat of clean transmission oil. (2) Install preformed packing (15) and transmission oil filter adapter (13) on transmission (16). (3) Install    fitting    (14)    on    transmission    oil    filter adapter (13). (4) Install hose (5) on fitting (14). (5) Install   fitting    (12)    on    transmission    oil    filter adapter (13). (6) Install hose (7) on fitting (12). (7) Install  transmission  oil  filter  head  (4)  on  filter tray  (11)  with  three  screws  (10),  washers  (9), and nuts (8). 8-19