TM  11-5820-890-30-4 4-74. REPLACEMENT OF POWER SUPPLY HEATSINK.  Continued ITEM ACTION REMARKS INSTALLATION t. Power  supply  cover  (3) u. Connector P1 (4) v.  Terminal  block  TB1  (17) w.  Power  supply x.   Solder   lug   terminal   (12) y. Connector  J10  (6) z. Connector  J11  (9) aa.  Remote  control transformer  CCA  (27) ab.  2-Wire  dual  transient protection  CCA  (8) ac.  Connector  J9  (8) Install  retained  gasket  on  power  supply cover   (3). Position  retained  retaining  plate  on  con- nector  P1.  Position  connector  P1  in  heat- sink  assembly.  Using  torque  screwdriver, install  four  retained  screws  (5)  securing connector  P1  to  heatsink  assembly,  torque screws  to  8  to  10  in-lb. Using  cross  tip  screwdriver,  install  four retained  screws  (18)  and  flat  washers securing  terminal  block  TB1  to  heatsink assembly. Install. Using  cross  tip  screwdriver,  install  retain- ed  screw  (13)  and  flat  washer  securing solder  lug  (12)  terminal  with  ground  wires to  heatsink  assembly  (1). Using  torque  wrench  and  1-1/16-inch socket,  install  retained  hex  nut  (8)  and protective  cap  retainer  securing  connector J10  to  heatsink  assembly  (1),  torque  hex nut  to  70  in-lb. Using  torque  wrench  and  1-1/16-inch socket,  install  retained  hex  nut  (11)  and protective  cap  retainer  securing  connec- tor  J11  (9)  to  heatsink  assembly  (1). Using  cross  tip  screwdriver,  install  three retained  screws,  Iockwashers,  and  fIat washers  securing  remote  control  trans- former  to  power  supply  cover. Using  soldering  kit,  solder  wires  to  ter- minals  E1,  E2,  E5,  E6,  E13,  and  E14. Install. See  figure  4-22. These  were  removed step  r.  Apply  silicone pound tor P1 These in com- to  o-ring  on  connec- before  installation. were  removed  in step  q.  Apply  one  drop  of grade  H  sealing  compound to  threads  of  four  retained screws  before  installation. Refer to paragraph 4-51 for  installation  procedures. These  were  removed  in step  o. These  were  removed  in steps  n.  Apply  silicone compound  to  o-ring on  J10  connector  before installation. These  were  removed  in steps  m.  Apply  silicone compound  to  o-ring on  J11  connector  before installation. See  figure  4-22. These  were  removed  in step 1. See  figure  4-16. These  were  removed  in step  k. See  figure  4-15.  Refer to  paragraph  4-54  for installation   procedures. 4-197