TM 11-5820-890-30-4 13-40. REPLACEMENT OF POWER SUPPLY ADAPTER CHASSIS ASSEMBLY.  Continued ITEM ACTION REMARKS INSTALLATION bb. bc. bd. be. Power  supply  adapter chassis  assembly  (10), 25  Iockwashers,  and two  spring  pins Wiring harness with rear  access  cover,  J2 connector,   S1   rotary switch, and CR1, CR3, and CR4 diodes Screw,  flat  washer  (5), and  two  terminal  lugs  (4) Two  screws,  flat  washers (8),  and  four  terminal lugs  (7) . bf.    Rubber    washer bg. Iockwasher bh.   O-ring bi.                  Spanner   nut and Iockwasher bj. bk. bl. CR1  diode  (9),  flat washer,  and  lockwasher Three  screws,  flat washers,  and Iockwashers (1) power  supply  adapter chassis  assembly  (1) Obtain  replacement  power  supply  adapter chassis  assembly,  25  Iockwashers,  and two  spring  pins. Carefully  position  retained  wiring  harness with  rear  access  cover,  J2  connector, S1  rotary  switch,  and  CR1,  CR3,  and CR4  diodes  on  replacement  power  supply adapter  chassis  assembly.  Route  the  wiring harness  as  shown  in  figure  13-11. Use  cross  tip  screwdriver.  Install  and tighten  screw,  flat  washer,  and  two  ter- minal  lugs  securing  the  wiring  harness to  E4  on  the  chassis. Use  cross  tip  screwdriver.  Install  and tighten  two  screws,  flat  washers,  and  four terminal  lugs  securing  the  wiring  harness to  E5  on  the  chassis. Apply  silicone  compound  to  rubber washer  on  retained  S1  rotary  switch. Use  adjustable  wrench.  Install  and  hand tighten  hex  nut  and  replacement  lock- washer  securing  the  S1  rotary  switch  on the  chassis.  Use  torque  wrench.  Torque nut  to  13  in-lb. Apply  silicone  compound  to  o-ring  on retained  J2  connector  (3). Use  1  5/16-inch  spanner  wrench.  Install and  tighten  spanner  nut  and  replacement Iockwasher  securing  J2  connector  (3)  on the  chassis.  Use  torque  wrench  and socket  wrench  spanner  attachment. Torque  nut  to  90  in-lb. Use  adjustable  wrench.  Install  and  tighten retained  CR1  diode,  flat  washer,  and replacement  Iockwasher  on  the  chassis, Use  cross  tip  screwdriver.  Install  and  tighten three  retained  screws,  flat  washers,  and replacement  Iockwashers  securing  retained angle  bracket  (2)  with  the  CR3  and  CR4 diodes  on  the  chassis. Set  upside  down  on  work  surface  with front  toward  you,  Route  the  wiring harness  as  shown  in  figure  13-10. 13-71