3-28.  Terminal   Board a.  Removal. (1)   Refer   to   figure   3-1   and   remove   condenser rear  and  top  panel. (2)  Refer  to  figure  3-7  and  remove  terminal board. b.  Cleaning  and  Inspection. (1)   Wipe   the   terminal   board   with   a   clean,   dry cloth. (2)  Inspect  for  breaks,  cracks,  corrosion,  loose terminals,   or   other   defects. (3)   Replace   a   damaged   or   defective   terminal board   as   necessary. c.  Installation. (1)   Refer   to   figure   3-7   and   mount   terminal board. (2)  Refer  to  figure  FO-1  and  replace  wires  on terminal   board. (3)   Refer   to   figure   3-1   and   replace   condenser rear  and  top  panel. 3-29.   Condenser   Fan   Assembly a.   Removal. (1)     Refer     to     figure 3-1   and   remove   the condenser   rear   panel. (2)   Refer   to   paragraph   3-18   and   remove   the condenser  fan. b.   Cleaning   and   Inspection. (1)   Wipe   the   fan   with   a   clean   cloth   dampened slightly   with   an   approved   cleaning   solvent   and   dry thoroughly. (2)  Inspect  for  breaks,  cracks,  dents,  bends, loose   or   missing   mounting   hardware   or   other damage. (3)   Replace necessary. c.  Installation. (1)   Refer   to condenser   fan. a   damaged   condenser   fan   as paragraph  3-18  and  install  the (2)     Refer     to     figure 3-1   and   install   the condenser   rear   panel. 3-30.   Evaporator   Fan   Assembly a.   Removal. (1)     Refer     to     figure 3-1   and   remove   the evaporator   top   panel. (2)   Refer   to   paragraph   3-17   and   remove   the evaporator    fan. b.  Cleaning  and  Inspection. (1)  Wipe  the  evaporator  fan  with  a  clean  cloth dampened   slightly   with   an   approved   cleaning solvent. (2)  Inspect  for  breaks,  cracks,  dents,  bends, loose   or   missing   mounting   hardware   or   other defects. (3)   Replace necessary. c.  Installation. (1)   Refer   to evaporator    fan. a   damaged   evaporator   fan   as paragraph  3-17  and  install  the (2)   Refer   to   figure 3-1   and   install   the evaporator   top   panel. 3-31.   Heating   Unit a.   Removal. (1)  Refer  to  figure   3-1  and   remove   evaporator front,   left   lower,   and   right   side   panels. (2)  Refer  to  figure  3-9  and  remove  the  heater coil. b.   Cleaning,   Inspection,   and   Testing. (1)  Wipe  the  heating  element  unit  with  a clean,   dry   cloth. (2)   Check   for   loose   or   missing   mounting hardware.   Inspect   heater   coils   for   breaks,   cracks, and   corrosion.   Inspect   heater   overtemperature protector   thermostat   for   clean   contacts,   refer   to figure   3-9. (3)  With  switch  #  3  in  HEAT  position,  check voltage to   heater coil   terminals   and   heater overtemperature   protector   thermostat,   with voltmeter,   115   V   nominal,   refer   to   figure   3-9. (4)   Remove   power   and   test   heater   coils   for continuity   with   a   continuity   checker,   see   paragraph 3-32  b. (5)  Replace   a   damaged   or   defective   heating element  unit  as  necessary. c.  Installation. (1)  Refer  to  figure  3-9  and  install  the  heater coil. (2)   Rewire   per   wiring   diagram,   figure   FO-1. (3)  Refer  to  figure  3-1  and  replace  evaporator front,   left   lower,   and   right   side   panels. 3 - 3 2 .   C o n d e n s e r    a n d    E v a p o r a t o r    W i r i ng Harness a.  General.   The   evaporator   and   condenser sections  each  have  their  individual  wiring  harness which   terminates   at   connectors   where   the   units   are coupled  with  a  cable  assembly.  The  routing  of  the various  wires  can  be  determined  by  referring  to figures   FO-1   and   FO-2. b.   Testing.   To   test   a   wire   for   continuity, disconnect  the  wire  from  the  components  to  which it   is   attached   at   both   ends.   Touch   the   probes   of   a continuity  checker  to  each  end  of  the  wire;  if  the wire   does   not   show   continuity   it   is   defective   and must   be   repaired   or   replaced. c.  inspection.   Inspect   insulation   for   cracks,   or frayed   condition.   Inspect   for   corrosion,   loose terminal  lugs,  or  broken  wires.  If  a  wire  is  found  to be   damaged,   it   must   be   repaired   or   replaced. d.   Replacement. (1)   To   replace   a   wire   that   is   not   part   of   a wiring  harness,  disconnect  it  at  each  end  and  install a  new  wire  of  the  same  size.  Be  sure  to  identify  the new  wire  with  the  same  identification  as  the  one removed. (2)  If  the  defective harness  and  cannot  be wire  is  part  of  a  wiring removed,   disconnect   the 3-23