b.   Reassembly. (1)  See  figure  8-6  and  8-7  and  paragraph  8-69 and   reassemble   the   special   relay   box   assemblies   in reverse  order  of  disassembly.  The  dc  relay  assembly will  be  coated  in  accordance  with  the  requirements  of paragraph    3-3c(5). (2)  See  figures  8-4  and  8-5  to  reassemble  the precise   relay   assembly. (3)  See  figures  8-2  and  8-3  to  reassemble  the tactical   relay   assembly.   Rewire   relay   resistor assembly  as  shown  in  figure  8-3. c.    Installation. (1)  See  figure  8-1  and  install  special  relay box,   precise,   and   tactical   relay   assemblies   on   the relay  table. (2)  See  figure  8-1  and  install  relay  table. Section  III.  EXCITATION  SYSTEM  ASSEMBLY 8-9.  Scope. This   section   contains   repair   and   adjustment   instruc- tions   for   the   excitation   assembly   exciter. 8-10.   Removal. See  figure  8-1  and  remove  the  excitation  assembly exciter  (18)  as  follows: a.  Unscrew  the  two  electrical  connectors. — b.   Remove   screws   (19)   which   secure   exciter   (18) to  relay  table  (52). 8-11.   Disassembly. NOTE Tag   all   electrical   leads   removed   during disassembly  for  positive  identification during   reassembly. a.   Excitation   Assembly   Exciter.   To   disassemble excitation   assembly   exciter.   See   figure   8-15   and proceed  as  follows: (1)  Remove  screws  (1)  which  secure  cover  (2) to  chassis  (3)  and  remove  cover. (2) connector (3) (8). (4) 5) Remove   screws   (4)   which   secure   harness to  chassis  (3). Unscrew   connector   from   voltage   regulator Remove  screw  (9)  and  clamp  (10). Tag   and   disconnect   all   electrical   leads   and remove   wiring   harness   (6). (6)  Remove  semiconductors  (11,  12  and  13). (7)  Remove  heatsinks  (18,  19,  and  24)  by removing  associated  hardware  (14  thru  17  and  20 thru  23)  and  remove  insulators  (25  and  26). (8)  Remove  resistors  (29,  30  and  31)  by  re- moving  screws  (27)  and  washers  (28). Key  to  fig.  8-15. 1.   Screw 1A. Washer 2.   Cover 3.   Chassis 3A. Screw 4.   Screw 5.   Nut 6.   Wire   harness   assy 7.   Screw 8.   Voltage   regulator   (A10) 9.   Screw 10.   Clamp 11.   Semiconductor 12.   Semiconductor 13.   Semiconductor 14.   Screw 15.   Nut 16.   Screw 17.   Washer 18.  Heats  ink 19.   Heatsink 20₀ S c r ew 21.   Nut 22.   Screw 23.   Washer 24.  Heatsink 25.   Insulator 26.   Insulator 27.   Screw 28.   Washer 29.   Resistor 30.   Resistor 31.   Resistor 32.   Screw 33.   Bracket 34.   Bracket 35.   Screw 36.   Terminal   block 37.   Screw 38.   Transformer 39.   Screw 40.   Electronic   component   assy 41.   Spacer 42.   Bracket 43.   Screw 44.   Screw 45.   Filter Change   7   8-21