TM 5-6115-590-12 clean rag moistened with an approved cleaning solvent. 2.  Visually inspect terminal board for corrosion, cracks, damaged threads or other evidence of damage. (c)  Installation.  Install the terminal board in reverse order of removal procedures. (4)  Wiring Harness (To Connectors J14, J53, J54, J55, J56, J70, J76). (a)  Removal.  Tag and disconnect wires as necessary.  Remove four nuts, eight washers, and four screws to remove each wiring harness. (b)  Cleaning, Inspection and Repair. 1.      Clean   connectors   on   harnesses using filtered compressed air.  Wipe wires off using rag moistened with dry cleaning solvent. 2.      Visually   inspect   connectors   for cracks,   corrosion,   burns,   or   other   damage.      Inspect wires for breakage of insulation. 3.          Replace     harnesses     damaged beyond repair. (c)  Installation.  Install by reversing removal procedures. (5) Bracket and Air Conditioning Panel Assemblies (fig.  4-22). (a)  Removal. 1.      Prior   to   removal   of   either   the bracket assembly or the air conditioning panel assembly,   visually   inspect   for   dents,   bends,   or   other damage.      If   inspection   reveals   damage   which   would necessitate  the  replacement  of  either  panel  or  bracket, all  components  which  are  attached  to  the  part  must  be removed.  See the applicable paragraphs for removal of each component. 2.      Remove   bracket   assembly   from the air conditioning panel by removing  four screws and eight washers. (b)  Cleaning, Inspection and Repair. 1.    Clean  the  bracket  and  panel  with dry cleaning solvent. 2.    Inspect  the  bracket  and  panel  for dents, bending, corrosion, or other damage. 3.      Replace   parts   damaged   beyond simple shop repair. (c) Installation.  Install by reversing removal procedures. 4-36.  Temperature Control Panel Assembly Maintenance  procedures  for  components  mounted  on the  temperature  control  panel  (fig.    4-23)  consists  of cleaning,     removal,     and     replacement     of     damaged components. WARNING The power plant shall not be operating when maintenance on electrical components  is  being  performed,  and the power plant shall not be connected to another power plant that is operating. NOTE Access    to    the    temperature    control panel   is   obtained   by   removing   four bolts    and    four    washers    from    the perimeter   of   panel.      Carefully   work panel out far enough to gain access to component parts.  If entire panel Is to be removed, disconnect electrical connector (P94) and remove panel. a.  Panel Illumination Lamp Assembly (DS 22). (1)  Removal.  Tag and disconnect electrical connections to lamp assembly:  Remove nut and washer from   lamp   assembly.      Remove   lamp   assembly   from panel. (2)  Cleaning and Inspection. (a)  Clean lamp assembly with filtered compressed air and an electrician's brush or wipe with a clean rag moistened with an approved cleaning solvent. (b)    Visually  inspect  lamp  assembly for     corrosion,     cracks,     damaged     threads     or     other evidence of damage. (3)      Installation   Install   lamp   assembly   in reverse order of removal procedure b.    Cooled  Air  System  Indicating  Lamps  (DS20 and DS21). (1)  Removal Tag and disconnect electrical connections to lamp assembly.  Remove nut and washer from   lamp   assembly.      Remove   lamp   assembly   from panel. (2)  Cleaning and Inspection. (a)  Clean lamp assembly with filtered compressed  air  and  electrician's  brush  or  wipe  with  a clean rag moistened with an approved cleaning solvent. (b) Visually inspect lamp assembly for corrosion, cracks, damaged threads or other evidence of damage. (3)  Installation.    Install  in  reverse  order  of removal procedure. 4-37.  Auxiliary Power Tray Assembly Maintenance  of  the  auxiliary  power  tray  assembly  (fig. 4-24) consists of cleaning and removal and replacement of  damaged  or  malfunctioning  components.    The  tray assembly  is  located  behind  the  batteries  in  the  battery compartment.  Access to the tray assembly is obtained by  opening  the  battery  compartment  access  door  and removing the metal shield covering the tray assembly. WARNING Electrical    power    shall    be    shut    off before performing maintenance on the auxiliary power tray assembly. a.  Thermal Relay. (1) Removal. (a)    Tag    and    disconnect    electrical connections  to  thermal  relay  (4)  Remove  bus  bars  (5) and (6). Change 6   4-57