CHAPTER 17 KIT AND OPTIONAL EQUIPMENT REPAIR INSTRUCTIONS Section  I.  FUEL  BURNING  WINTERIZATION  KIT 17-1.  Introduction. This   chapter   contains   intermediate   (field)   (direct   and general   support)   and   depot   repair   instructions   for   the kits  and  optional  equipment  of  the  generator  sets. 17-2.   General. The  fuel  burning  winterization  kit  is  available  as  an aid   in   starting   the   generator   set   in   temperatures   from -25°  F  to  -65°  F. The  kit  consists  of  a  heater,  which burns  fuel  from  the  engine  fuel  supply,  a  control panel,  and  the  necessary  plumbing  which  will  route coolant  through  the  heater  and  to  the  oil  pan  heat  ex- changer  and  engine  water  jacket  through  an  outlet  at the  front  of  the  cylinder  block  and  back  to  the  heater. A  thermostat  on  the  engine  cylinder  head  starts  and stops   the   heater   according   to   coolant   temperature when  the  system  is  operating. 17-3.    Troubleshooting. Troubleshoot   the   fuel-burning   winterization   kit   using table   17-1.   Typical   malfunctions,   the   possible   causes and   the   necessary   corrective   actions   are   tabulated. 17-4.   Removal   and   Disassembly. a.   Removal. Refer   to   Operator   and   Organizational Maintenance   Manual   and   remove   fuel-burning   winteriza- tion  kit. b.    Disassembly. (1)  See  figure  17-1  and  disassemble  the  fuel  - burning  heater. Disconnect   and   tag   leads   sequentially during   disassembly   procedure. (2)   See   figure   17-2   and   disassemble   the   fuel- burning   heater   control   box.   Disconnect   and   tag   leads sequentially   during   disassembly   procedure. 17-5.   Fuel   Burning   Heater   Control   Box   Testing, Repair   and   Replacement. a.   Test   of   Circuit   Breaker. (1)    Disconnect    connector. (2)  Using  an  ohmmeter  with  the  R  x  1  scale selected,   read   across   the   circuit   breaker.   With   the circuit  breaker  in  the  closed  position  (ON)  the  reading should be zero (0) ohm. (3)   Open   the   circuit   breaker   (OFF),   select   the x  100  scale,  the  meter  should  indicate  infinity  ohms. (4)   Connect   the   circuit   breaker   between   a 28  Vdc  source  and  a  resistive  load  such  that  the  cur- rent   draw   from   the   source   is   16.73   amperes.   The circuit  breaker  should  not  trip.  If  the  circuit  breaker trips,   replace   the   circuit   breaker. b.   Test   of   Power   Switch. (1)  Disconnect  connector. (2)   Using   an   ohmmeter   set   scale for  continuity  between  terminals  4  to  6 the  ON  position. If   defective,   replace. to   RI.   Check and 1 to 3 in c.  Replacement  of  Light  Assembly. (1)   Disconnect   connector   J26. (2)   Disconnect   and   tag   leads   sequentially. (3)   Remove   lens   cap   and   locking   bolt.   Remove light   assembly   from   rear   of   panel. (4)   Replace   in   reverse   order. d.   Replacement   of   Circuit   Breaker. (1)   Disconnect   connector   J26. (2)   Disconnect   and   tag   leads. (3)   Unscrew   holding   nut   and   lock   washer.   Re- move   circuit   breaker   from   rear   of   panel. (4)   Replace   in   reverse   order   noting   the   proper placement   of   locating   lug. e.   Replacement   of   Power   Switch. (1)   Disconnect   connector   J26. (2)   Disconnect   and   tag   leads   sequentially. (3)   Remove   mounting   hardware   and   extract   the switch  through  the  rear  of  the  panel. (4)   Replace   in   reverse   order   noting   that   ON   is to  be  in  the  up  position. 17-6.   Cleaning. a.   Clean   all   metal   parts   with   cleaning   solvent Federal   Spec   P-D-680   and   dry   thoroughly. b.   Clean   electric   motor,   micro-switch,   limit   switch, thermostat,   preheater   elements   and   all   electrical   con- nectors  and  wiring  with  a  cloth  moistened  with  cleaning solvent  Federal  Spec  P-D-680.  Do  not  submerge  elec- trical   components   in   cleaning   solvent. c.   Clean   all   orifices,   sintered   filter   and   screen   to make   sure   they   are   free   from   any   obstruction. 17-1