b.   Remove   the   wheel   mounting   kit   and   associa- ted–hardware   in   reverse   order   as-illustrate   in figure   17-6. 17-22.   Inspection   and   Repair. Refer   to   Operator   and   Organizational   Maintenance Manual   for   wheel-mounting   kit   inspection   and   re- pair    instructions. 17-23.   Installation. a. Using  a  lifting  device,  with  10,  000  pound Section  IV. 17-24.   General. a. The   load   bank   is   a   balanced,   three   phase, four-wire  device  that  can  be  used  to  apply  a  re- sistive   load   to   the   generator.   The   purpose   of   the resistive   load   is   to   provide   a   partial   load   for   the set  if  the  normal  utility  load  is  too  low  to  keep  the engine   generator   set   operating   without   carboniza- tion  of  the  engine. b.  When  the  load  bank  is  used  in  conjunction with   the   engine-generator   set,   the   generator   is protected   against   overloads   by   the   load   reject   relay A41,   incurred   as   a   result   of   increases   in   utility load. The  selected  kw  load  of  the  bank  is  continu- ally   present. The   load   reject   relay,   utilized   when the  load  bank  mode  selector  switch  is  in  the  auto position,   receives   the   output   of   the   load   measuring unit. c. The   load   measuring   unit   senses   the   generator output  (utility  load  plus  load  bank),  should  the  com- bined  load  exceed  50%  of  the  rated  generator  capa- city  60  kw  (i.  e.  30  kw).  The  LMU  output  voltage applied   to   the   load   reject   relay   causes   contacts within   the   load   reject   relay   to   close,   resulting   in the  energizing  of  the  trip  coil  of  the  Over  Tempera- ture   Reset   switch. d.  This  action  removes  the  selected  load  from the–generator  output  allowing  continued  supply  of the   utility   load   without   the   risk   of   generator   over- load. e. When   the   generators   utility   load   diminishes the  load  bank  may  be  reapplied  by  manually  reset- ting   the   Over   Temperature   Reset   switch. f.   Positioning   the   load   bank   select   switch   to   the manual   mode   disables   the   trip   feature   previously described. Protection   of   the   generator   against overloads  produced  by  combined  load  bank  and  util- ity   loads   is   then   the   responsibility   of   the   operator. The  total  load  is  displayed  on  the  panel  mounted kw   meter. Should  the  displayed  reading  exceed  the sets   rated   capacity,   the   operator   must   reduce   or remove  the  load  bank  setting  with  the  load  bank selector   switch. capacity,   hoist   engine   generator   set   until   bottom of   skid   base   clears   ground   by   approximately   two feet. b.   Position   front   and   rear   running   gear   and lower   engine   generator   set   until   it   just   rests   on running   gear   axles. c. Install   kit   with   attaching   hardware   as   illust- rated   in   figure   17-6. LOAD  BANK g.   The   load   bank   incorporates   a   thermostatic switch  which  will  operate  the  trip  end  of  the  Over Temperature  Reset  switch  to  remove  the  selected load   from   the   generator   when   the   ambient   tempera- ture  reaches  450  ±  15°  F.  The  thermostatic  switch is  fully  operable  in  both  manual  and  automatic modes   of   operation. 17-25.   Removal   and   Disassembly. a.   Removal.   Refer   to   Operator   and   Organiza- tional   Maintenance   Manual   and   remove   the   load bank. b.    Disassembly. See   figure   17-7   and   disassem- ble  the  load  bank. 17-26.   Repair,   Overhaul   and   Rebuild. a.   Test   diodes   per   paragraph   14-10.   Replace a   defective   diode. b.   Repair   or   rebuild   wiring   harness   as   required. Refer   to   Chapter   5,   and   to   wiring   schematic   in Chapter   1   for   wiring   instructions. c.   Refer   to   figure   17-8   and   perform   load   reject relay   test. d.   Rotary   Switches. Refer   to   Operator   and Organizational    Maintenance    Manual. e.   Fan   and   Motor   Assembly.   Refer   to   Operator and-Organizational    Maintenance    Manual. (1)   Removal. Refer   to   Operator   and   Organi- zational  Maintenance  Manual  to  remove  the  fan  and motor   assembly. (2)    Disassembly. See  figure  17-9  and  dis- assemble   in   the   numerical   sequence   illustrated. (3)   Cleaning   and   inspection. (a)   Cleaning. 1.  Blow  out frame   and   wipe   interior all   dirt   from   inside   field with  a  clean  cloth. 17-16