TM 5-6115-329-14 TO 35C2-3-440-1 Section  II.  OPERATION  UNDER  UNUSUAL  CONDITIONS 2-3. Operation in Extreme Cold (Below 0^oF). a.  Keep   fuel   tank   full   to   avoid   condensation   and freezing. b.  Service    fuel    filter    often    enough    to    prevent bursting   from   water   sediment   freezing   in   it. c.  Avoid   accumulation   of   ice   on   generator   set parts. d.  Operate   set   in   location   which   is   protected from   chilling   winds.   This   protection   permits   easier servicing   and   better   performance. e.  Keep   snow   and   ice   out   of   the   fuel   supply   to prevent    carburetor    jets    from    becoming    plugged. f.  Avoid   operating   generator   set   for   short   peri- ods.   A   minimum   of   30   minutes   operation   is   required to   evaporate   water   caused   by   heating   of   cold   metal parts. g.  Allow   at   least   five   minutes   of   continuous   en- gine   operation   before   applying   load. h.  Lubricate    in    accordance    with    current    lubri- cation   order.      Air   Force   personnel   use   the   lubri- cation   section   of   applicable   TO   35C2-3-1-426   WC-se- ries    workcards. i.  Provide   shelter   or   cover   to   protect   unit   when not   in   operation. j.  Engine   (-25   to   -65^oF)   (-32   to   -53^oC).   Lubricate the   engine   in   accordance   with   current   lubrication order.   Air   Force   personnel   use   the   lubrication   sec- tion   of   applicable   TO   35C2-3-1-426   WC-series   work- cards.   If   practical,   apply   heat   to   the   engine   with   a suitable torch (MIL-H-52112 type 1), Apply the heat   by   playing   the   torch   flame   back   and   forth   over intake   manifold,   oil   pan,   valve   covers,   and   air   in- take,   until   the   engine   cranks   freely.   Keep   flame   and heat   from   non-metallic   parts   of   engine. Do  not  let  the  heating  torch  flame come in contact with  the  fuel  tank  or fuel   lines   (the   fuel   line   and   fittings   are plastic   nylon);   an   explosion   could   oc- cur,   causing   injury   or   death. CAUTION The   heating   torch   generates   sufficient heat   to   melt   metal   parts   if   the   flame   is held at one place for more than 30 sec- onds.  Correct  heating  procedure  is  to play  the  flame  back  and  forth  over  the components  to  be  warmed.  Take  care that the flame does not contact the spark  plug  cable,  generator  control box, or other non-metallic parts of the set. 2-4. Operation in Extreme Heat a.  Keep   generator   set   clean   and   free   of   dust. b.  Allow   sufficient   room   around   the   generator set   for   air   circulation. c.  Be   sure   engine   shroud   is   not   clogged   with   for- eign    matter. d.  Do   not   overload   set. 2-5.   Operation   in   Dusty   or   Sandy Areas Clean  all  parts  in  a  well-ventilated area.   Avoid   inhalation   of   solvent fumes and prolonged exposure of skin to  cleaning  solvent.  Wash  exposed skin thoroughly. Dry cleaning solvent (Fed.  Spec.  P-D-680)  used  to  clean parts is potentially dangerous to per- sonnel and property. Do not use near open flame or excessive heat. Flash point of solvent is 100° to 138°F. (39° to 59° c.). a.  Shield   the   set   from   dust   and   sand. b.  Use    a    cloth    dampened    with    dry    cleaning solvent,    Fed.    Spec. P - D - 6 8 0 ,     t o     c l e a n     t h e     s e frequently. c.  Be   sure   engine   shroud   is   not   clogged   with   for- eign    matter. d.  Service   air   cleaner   more   often   than   normally required. e.   Prevent    sand    and    dust    from    entering    fuel tank. f.  Keep    lubricants    and    lubrication    equipment free   of   sand   and   dust. 2-6. Operation Under Rainy or Humid Conditions a.  Provide   shelter   for   set   if   possible.   If   shelter   is not   available,   use   canvas   cover   for   protection   when unit   is   not   in   operation. b.  Keep   water   from   entering   fuel   system. c.  Inspect   fuel   filter   twice   a   day   for   accumu- lation   of   water. 2-6