(10)  Disconnect   and   remove   service   valve   to service   hose   bleed   valve   tube   assembly (23).  Tag for reassembly reference. (11)  Disconnect and remove tube assembly (17) at  tee  (27).    Disconnect  and  remove  tube assembly     (5)     at     tee     (31).          Tag     for reassembly reference. (12)  For   the   service   hose   bleed   valve   (29), mechanical    filter    drain    valve    (33)    and dehydrator bleed valve (37) remove handles,   unscrew   and   remove   lock   nuts, and   remove   the   valves   from   panel   (44) from the rear. (13)  Remove  retaining  nut  and  flat  washer  (40) from unloader switch (39).  Remove switch (39) from panel (44) from the rear. (14)  Loosen   adjusting   nut   at   the   back   of   the panel  on  push  button  (42).    Unscrew  and remove   top   cap   from   push   button   (42). Remove  the  push  button  from  the  back  of the panel. (15)Unscrew  and  remove  the  cover  of  indicator (43).    Remove  indicator  (43)  from  the  back of  the panel. b. Cleaning.  Refer to paragraph 6-3.a.  for general cleaning instructions. (1) Clean    all    unpainted    metal    parts    using cleaning  solvent  that  is  in  accordance  with Federal   Specification   P-D-80,   Type   II,   or equivalent.    Wipe  nonmetallic  parts  with  a clean, lint-free cloth moistened in detergent and water and air dry. (2) Clean all painted surfaces by spraying  with hot  water    and    detergent    solution    per Federal  Specification  P-D-220.    Parts  that will    be    repainted    may    be    cleaned    with steam.    Avoid  use  of  water  or  steam  on instruments,     electrical     components     and wiring.      After   cleaning,   refinish   affected painted areas where required in accordance with T.O.35-1-3. (3) Wash  glass  gauge  faces  with  a  soft  cloth and  warm  soapy  water  or  equivalent.    Dry with a clean lint-free cloth.  Use care not to damage indicators. Proper precautions must be exercised to protect personnel.    Stand  clear  of  all  tubing  openings. After     cleaning,     drain     tubes,     and     dry     with low pressure compressed air (30 psig 1207 k Pa] maximum). (4) Clean  outside  and  inside  surfaces  of  steel tubing    assemblies    with    compressed    air, pressurized   hot   water   and   detergent   or steam. Do not use steam or water to clean any electrical components   or   assemblies   such   as   switches, starter motors, or solenoids. (5) To clean electrical components use trichloroethane,  per  Federal  Specification O-T.620.    or  equivalent,  and  air  dry  parts thoroughly. c. Inspection.  Refer to paragraph 6-3.b for general inspection procedures. (1) Tubing  for  cracks,  chaffing,  deformation  or wear. (2) Hexagon    nuts    for    stripped    or    damaged threads. (3) Screws for stripped or damaged threads. (4) Threaded parts (fittings, etc.) for stripped or damaged threads. (5) Rubber    grommets    for    cracks,    excessive wear or deformation. d. Repair  or  Replacement.    Refer  to  paragraph  6- 3.for general repair or replacement procedures. (1) Replace    damaged    or    defective    nipples. couplings and gauges. (2) Replace   all   threaded   parts   having   worn, stripped, or damaged threads. (3) Replace damaged or defective tubing. (4) Replace damaged or defective fittings. (5) Replace   damaged   or   defective   pressure switch. (6) Replace     damaged     or     defective     lamps, switches or switch assemblies. (7) Replace  identification  plates  if  marking  are illegible. 6-13