TM 55-1510-222-10 (cold engine).  Fill to MAX or MAX HOT (hot engine). 6. Check    oil    filler    cap    for    damaged preformed packing, general condition and locking. CAUTION Ensure  that  oil  filler  cap  is  correctly installed and securely locked to prevent loss of oil and possible engine failure. 7. Install and secure oil filler cap. 8. Check for any oil leaks. 2-95.  SERVICING THE HYDRAUL IC SYSTEM. a. Servicing Hydraulic Brake System Reservoir. 1. Gain access to brake hydraulic system reservoir. 2. Remove  brake  reservoir  cap  and  fill reservoir to washer on dipstick with hydraulic fluid. 3. Install brake reservoir cap. b. Servicing  Hydraulic  Landing  Gear  System. Servicing the hydraulic landing gear extension/ retraction   system   consists   of   maintaining   the   correct fluid   level   and   maintaining   the   correct   accumulator precharge.  The accumulator is located in the reservoir access   area   and   is   charged   to   800   50   PSI   using bottled  nitrogen.    A  charging  gage  is  mounted  on  the accumulator.  A reservoir, located just inboard of the left nacelle  and  forward  of  the  main  spar,  has  a  lid  with  a dipstick   attached   marked   FLUID   TEMP   0°   F,   50°   F, 100°   F.    Add  MIL-H-5606  hydraulic  fluid  (consumable materials list) as required to fill the system, corrected for temperature. 2-96.  INFLATING TIRES. Inflate tires as follows: 1. Inflate  nose  wheel  tires  to  a  pressure between 55 and 60 PSI. 2. Inflate  main wheel tires to a pressure between 73 and 77 PSI. 2-97.  SERVICING THE CHEMICAL TOILET. The toilet should be seviced during routine ground maintenance of the aircraft following every usage. The  waste  storage  container  should  be  removed, emptied,  its  disposable  plastic  liner  replaced,  and  the container  replaced  in  the  toilet  cabinet.    Toilet  paper, waste     container     plastic     liners,     and     dry     chemical deodorant  packets  should  also  be  resupplied  within  the toilet cabinet as needed. 2-98. SERVICING THE AIR CONDITIONING SYSTEM. Servicing  the  air  conditioning  system  consists  of checking  and  maintaining  the  correct  refrigerant  level, compressor oil level, belt tension and condition, system leak  detection,  and  replacement  of  the  evaporator  air filters.      It   is   imperative   that   maintenance   of   the   air conditioning  system,  except  for  filter  replacement,  be accomplished    only    by    qualified    refrigerant    system technicians. 2-99.  ANTI-ICING, DEICING AND DEFROSTING TREATMENT. 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. 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, ensure that protective covers are fitted tightly.  As a  deicing  measure,  keep  exposed  aircraft  surface  wet with fluid for protection against frost. 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. a. Remove   frost   or   ice   accumulations   from aircraft   surfaces   by   spraying   with   diluted   anti-icing, deicing,  and  defrosting  fluid  mixed  in  accordance  with Table 2-12. 2-86