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REPLACEMENT OF POWER SUPPLY ADAPTER CHASSIS ASSEMBLY. Continued - TM-11-5820-890-30-5_784
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TM-11-5820-890-30-5 Ground Non-Icom Radio Sets Consisting of: Receiver-Transmitter Radio RT-1439/VRC (NSN 5896-01-195-0827) Manual
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REPLACEMENT OF WIRING IN POWER SUPPLY ADAPTER CHASSIS (8A2)


TM 11-5820-890-30-5 14-40. REPLACEMENT OF POWER SUPPLY ADAPTER CHASSIS ASSEMBLY.  Continued ITEM ACTION REMARKS INSTALLATION  Continued cf.   O-ring cg.                  hex  nut  and Iockwasher ch.   Connector   (4)   wires ci.  Screw,  flat  washer, and  Iockwasher  (2) cj. Two  bevel  washers  (4) ck.   Two   rim   clenching clamps  (5) cl.   Two   flat   washers   (2) cm. cn. co. cp. cq. Two  spring  pins  (2) Rear  access  cover  (2) 12   captive screws  (11) Heat  sink  assembly  (2) 18  captive screws  (3) Apply  silicone  compound  to  o-ring on  retained  J1  connector  (4). Use  socket  wrench  and  1  1/16  inch  socket. Install  and  hand  tighten  retained  hex  nut and  replacement  Iockwasher  securing  the J1  connector  (4)  on  the  chassis.  Use  torque wrench  and  1  1/16  inch  socket.  Torque to  70  in-lb. Use  soldering  kit,  soldering  aid,  and  heat sink.  Solder  tagged  wires  to  correct  pins on  the  J1  connector,  and  remove  wire tags. Use  cross  tip  screwdriver.  Install  and hand  tighten  retained  screw,  flat  washer, and  replacement  Iockwasher  securing  the protective  rubber  cap  (3)  for  the  J1 connector  on  the  chassis. Install  two  retained  bevel  washers  on two  retained  thumbscrews  (3).  See figure  14-8. Install  two  retained  rim  clenching  clamps on  two  retained  thumbscrews  (3). Use  long  nose  pliers.  Install  two  retained flat  washers  on  the  two  thumbscrews. Use  long  nose  pliers.  Install  two  replacement spring  pins  in  the  end  of  two  thumbscrews securing  them  to  the  chassis. Position  retained  rear  access  cover  on the  chassis.  See  figure  14-7. Use  flat  tip  screwdriver.  Install  and  hand tighten  the  12  captive  screws  securing the  rear  access  cover  to  the  chassis. Use  torque  screwdriver.  Torque  to  9  in-lb. Position  retained  heat  sink  assembly  on the  chassis.  See  figure  14-2. Use  flat  tip  screwdriver.  Install  and  hand tighten  the  18  captive  screws  securing the  heat  sink  assembly  on  the  chassis. Use  torque  screwdriver.  Torque  to  9  in-lb. Before  and  after  soldering, clean  wires  and  connector pins  with  alcohol  and cotton  swabs. Ensure  that  serrated  side of  each  bevel  washer is  facing  toward  the thumbscrew. Ensure  that  flat  side of  each  rim  clenching clamp  is  facing  toward the  bevel  washer. 14-74


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