TM 1-1500-204-23-1 CAUTION Do    not    flush    system    with    water. Damage    to    system    may    otherwise result (3) Purge   system   thoroughly   with   clean,   dry, compressed  air  immediately  after  landing  when  system has  been  used  In  flight,  or  immediately  after  discharged on   the   ground.      Absorb   residual   bromochloromethane remaining on surface areas with dry cloths and clean, dry, compressed air (4) Inspect compartments and components that may  have  come  in  contact  with  extinguishing  agent  for possible damage Replace defective parts (5) Inspect   rubber   materials   and   insulations where    extinguisher    was    used    Replace    when    found defective. (6) Relubricate  all  lubricated  parts  exposed  to extinguishing agent (7) Replace overboard discharge indicator disc after system has been discharged. CAUTION Disconnect  positive  electrical  lead  on solenoid valve before removing container,   and   do   not   connect   lead until     all     circuit     tests     have     been completed and firing switch on control panel  is  in  OFF  position.    Damage  to equipment may otherwise result. (8) Replace  discharged  container  and  bonnet assembly with fully charged assemblies WARNING Before attempting to perform continuity test of the fire extinguishing electric circuit, the extinguisher cartridges must be removed to preclude accidental firing during test (9) Make  a  visual  inspection  of  the  electrical circuit wiring for obvious damage.  Test the continuity of the entire circuit excluding the fire extinguisher container cartridge. NOTE Install     cartridges     in     the     assigned locations   (see   DA   Form   2408-18)   to preclude    incorrect    age    life    control removals at a later date. 9-16.  Hoist Systems.  The hoist system which provides a  means  of  raising  and  lowering  equipment  or  personnel during flight or ground operation is of two types: hydraulic and electric. a. Hydraulic        Hoist    System.        Maintenance    and testing    procedures    for    hydraulic    hoist    systems    are explained in the following paragraphs (1) Maintenance    of    hydraulic    hoist    system. Maintenance   of   the   hydraulic   hoist   system   consists   of replacement    of    defective    parts    using    the    following procedures (a) Service    system    with    fluid,    MIL-H- 5606, and maintain indicated reservoir level (b) Cap   all   tubing   disconnected   during removal of units to prevent entry of foreign matter. (c) Replace   damaged   tubing.      Use   old tubing  or  a  piece  of  string  as  a  pattern  in  routing  new tubing (d) Reuse    fittings    of    hose    and    tube assemblies unless damaged NOTE Clean and thoroughly flush tubing and hose prior to installation. (e) Replace  hoist  cable  when  kinked  or when cable has broken. (f) Replace   micronic   filters   periodically to assure delivery of uncontaminated fluid (g) Lubricate  hoist  as  prescribed  in  the applicable aircraft maintenance manual. (2) Testing   of   hydraulic   hoist   system.      Test hydraulic   hoist   system   for   operation   periodically   (and when a new unit Is installed in the system) by performing a functional check using the following procedures: 9-38