TM 55-1510-219-10 NOTE Commercial detergents and disinfectants  can  be  included  in the rinse water if desired. However,   do   not   include   these materials in the tank precharge. 3. Rinse  and  drain  the  tank  several times   to   insure   that   the   tank   is thoroughly clean. 4. Wipe  the  exterior  surfaces  of  the tank  using  a  cloth  moistened  with clear water and disinfectant. c. Tank Precharge. Caution During freezing temperatures, toilet     shall     be     serviced     with antifreeze    solution    to    prevent damage. Charge   the   tank   with   a   mixture   of   water   and chemical according to chemical manufacturer's specification. d. Tank Installation. 1. Install   the   tank   by   inserting   the slides  located  on  each  side  of  the knife    valve    into    the    slide    plate assembly   on   the   bottom   of   the toilet and slide tank into place. 2. Press the two fasteners to the first detent to secure the tank. 3. Remove  the  cap  in  the  flush  hose quick  disconnect  and  connect  the hose coupling to the quick disconnect.      Lock   the   disconnect lock ring. 4. Pull the knife valve actuator to fully open the valve. 5. Lift    the    toilet    seat    and    shroud assembly from the top of the toilet and wipe with cloth moistened with clear water and disinfectant.  Wipe the bowl and surrounding area. 6. Check   flushing   operation   of   the toilet and check for leaks. 7. Close access to the toilet. 2-96. ANTI-ICING, DEICING AND DEFROSTING PROTECTION. The  aircraft  is  protected  in  subfreezing   weather   by spraying the surfaces (to be covered with protective covers) with  defrosting  fluid.    Spraying  defrosting  fluid  on  aircraft surfaces    before    installing    protective    covers    will    permit protective covers to be removed with a minimum of sticking. To   prevent   freezing   rain   and   snow   from   blowing   under protective covers and diluting the fluid, insure that protective covers   are   fitted   tightly.      As   a   deicing   measure,   keep exposed aircraft surface wet with fluid for protection against frost. NOTE Do     not     apply     anti-icing,     deicing     and defrosting fluid to exposed aircraft surfaces if   snow   is   expected.      Melting   snow   will dilute the defrosting fluid and form a slush mixture    which    will    freeze    in    place    and become difficult to remove. Use  undiluted  anti-icing,  deicing,  and  defrosting  fluid (MIL-A-8243) to treat aircraft surfaces for protection against freezing rain and frost.  Spray aircraft surface sufficiently to wet  area,  but  without  excessive  drainage.    A  fine  spray  is recommended  to  prevent  waste.    Use  diluted,  hot  fluid  to remove ice accumulations. 1. Remove frost or ice accumulations from aircraft surfaces by spraying with diluted anti-icing,  deicing,  and  defrosting  fluid mixed in accordance with Table 2-10. 2. Spray diluted, hot fluid in a solid stream (not     over     15     gallons     per     minute). Thoroughly saturate aircraft surface and remove   loose   ice.      Keep   a   sufficient quantity  of  diluted,  hot  fluid  on  aircraft surface coated with ice to prevent liquid layer  from  freezing.    Diluted,  hot  fluid should  be  sprayed  at  a  high  pressure, but not exceeding 300 PSI. 3. When    facilities    for    heating    are    not available and it is deemed necessary to remove  ice  accumulations  from  aircraft surfaces,  undiluted  defrosting  fluid  may be   used.      Spray   undiluted   defrosting fluid   at   15   minute   intervals   to   assure complete   coverage.      Removal   of   ice accumulations using undiluted defrosting fluid in expensive and slow. 4. If    tires    are    frozen    to    ground,    use undiluted   defrosting   fluid   to   melt   ice around  tire.    Move  aircraft  as  soon  as tires   are   free.      Recommended   Fluid Dilution Chart 2-82