TM 5-3895-368-14&P Figure 4-9.  Chain Installation Diagram. i. Assembly - Gear and Hook Section (Figure 4-4). (1) If    removed,    install    latch    (3)    and    latch spring (5), applying torque to the spring to keep  the  latch  closed.    Secure  latch  and spring with screw (4) and nut (6). (2) Install  stem  of  upper  hook  assembly  (2) into  adapter  (8),  and  secure  with  nut  (10) and  pin  (11).    Assemble  screws  (7)  and Nuts (9) to adapter loosely. (3) Install  bearings  (23  and  41)  in  bores  of motor   housing   (56)   and.      gear   housing (40), seating fully against shoulder. (4) Assemble chain (55) to liftwheel (21), with last   link   on   loose   end   side   of   hoist   an upstanding  link  and  weld   of   up-standing links   to   outside   of   liftwheel   (see   Figure 4-9).      Assemble   the   chain   guides   (22, Figure 4-4) to the liftwheel (21) and around lift   chain   (55),   seating   the   guides   firmly against     each     other     with     internal     tab engaging the chain slot of liftwheel. (5) Seat  assembled  chain  (55),  liftwheel  (21), and chain guides (22), with splined end of liftwheel    up,    into    motor    housing    (56), engaging bearing (23).  Chain guides must engage the square boss of motor housing. (6) Install nut (20) in recess of motor housing (56),    with    nylock    side    of    nut    toward liftwheel (21). (7) Support  assembled  upper  hook  with  nuts (9)  in  slots  of  motor  housing.    Carefully mate   the   motor   housing   (56)   and   gear housing (40), aligning liftwheel with bearing   (23)   in   gear   housing.      Secure housings  with  four  screws  (32).    Ensure that screws are tight. (8) Secure    upper    hook    assembly    (2)    and adapter (8).  Torque the screws (7) to 30- 45  ft.  lbs  with  12-point  socket  and  torque wrench. (9) Assemble    protector    (38),    with    lettering away  from  pinion,  to  intermediate  pinion (39) and secure with retaining ring (37). (10) Install    bearing    (36)    onto    shoulder    of intermediate pinion (39). (11) Install   gear   (33)   onto   liftwheel   (21)   and secure with retaining ring (34). (12) Install   shaft   and   pinion   assembly   (35), meshing pinion teeth with gear of protector (38). (13) Install   the   intermediate   pinion   (39)   with protector   (38),   carefully   meshing   pinion teeth with gear (33). (14) If removed, install plugs (27) and expansion   plug   (26)   in   frame   assembly (25). (15) Install   second   bearing   (36)   into   bore   of housing  (25),  seating  in  bore  nearest  the brake studs. (16) Install  flat  washer  (28),  lockwasher  (29), and screw (30) in frame assembly (25). (17) Assemble    new    gasket    (24)    on    mating surface of gear housing (40) and carefully guide  frame  assembly  (25)  over  ends  of intermediate   shaft   (39)   and   shaft   (35). Seat  frame  assembly  against  gasket  (24) and secure with screws (31). j. Assembly - Motor End (Figure 4-5). (1) Install bearing (5) in cover (4), seating fully against shoulder provided. (2) Position  stationary  switch  (6)  in  cover  (4) and secure with two screws (9). 4-13