TM 5-6115-590-12 CHAPTER 1 INTRODUCTION Section I.  General 1-1.  Scope This   manual   is   for   your   use   in   operating   and maintaining the Power Plant, Utility, (Medical Unit, Self- Contained, Transportable), Gas Turbine Engine Driven, AiResearch Model PPU85-6, Libby Welding Model LPU- 71,  Amertech  Model  APP-1,  and  Hollingsworth  Model JHTWX10/96. 1-2.  Maintenance Forms and Records a.    The maintenance forms and records required to maintain    this    equipment    includes    DA    Form    2402 (Exchange Tag), DA Form 2404 (Equipment Inspection and   Maintenance   Work   Sheet),   and   DD   Form   314 (Preventive Maintenance Schedule and Record). b.    Any additional forms that are required are listed and    explained    in    TM    38-750    (Army    Maintenance Management System). 1-3.  Destruction of Army Material to Prevent Enemy Use a.    Improper  Operation.    Pour  water,  sand  or  dirt into  oil  tank  and  run  engine  until  failure  occurs.    Cut electrical cables, oil and fuel lines and hoses. b.    Fire.      Use   fire   to   destroy   equipment   when quantities of fuel and flammable materials are at hand. Burn  assemblies  and  components  on  a  priority  basis  if possible.      Proper   concentration   of   equipment   to   be burned will produce a hotter more destructive fire. Fires should   be   lit   after   mechanical   destruction   has   been accomplished. c.    Mechanical  Destruction.    Use  sledge  hammers, crowbars,   picks,   axes   or   any   other   heavy   tools   to destroy  all  vital  elements  such  as  fuel  and  oil  tanks, filters,   pumps,   starter,   generators,   battery,   upper   and lower electrical racks, fuel atomizer, combustion assembly, accessory gearcase, compressor and turbine assembly, control panels, condensers, evaporators, and any other major assembly or components. d.    Gunfire.        Fire    on    the    equipment    with    the heaviest    weapons    available,    aiming    at    the    major assemblies and controls. WARNING Point     blank     firing     on     equipment     with weapons   should   not   be   attempted   unless the   safety   of   all   personnel   in   the   area   is assured. NOTE For further instructions on destruction of equipment  to  prevent  enemy  use,  refer  to  TM 750-244-3. 1-4.  Administrative Storage a.    Preparation    of    the    Power    Plant    for    Limited Storage. (1)    Inspection.        The    power    plant    will    be inspected for any unusual conditions such as damage,  rusting,  accumulation  of  water  and  pilferage. Inspection of the individual components and assemblies will be outlined on the "Preventive Maintenance Service Quarterly" in this manual. (2)    Cleaning  and  Drying.    All  contamination shall  be  removed  from  the  power  unit  by  an  approved method.  Approved methods of cleaning and drying are described in TM 38-230. (3)    Painting.      Paint   all   surfaces   where   the paint has been removed or damaged.  Refer to TM 43- 0139 for detail cleaning and painting instructions. (4)    Depreservation Guide. Record depreservation instructions on DA Form 2258 (Preservation   and   Depreservation   Guide   for   Vehicles and Equipment). (5)    Lubrication System.  Lubricate the item in accordance   with   LO   5-6115-590-12,   lubrication   order. Make   sure   that   the   crankcase   is   filled   to   the   proper level.  Operate the engine long enough to bring it up to its operating temperature and insure complete lubrication of bearings, gears, etc.  Leave the oil in the crankcase. (6)    Sealing  of  Openings.    Openings  that  will permit  the  direct  entry  of  water  into  the  interior  of  the engine,   electric   motors,   compressors,   etc.,   shall   be sealed with tape conforming to Specification PPT-T-60, Type IV. (7)    Fuel   Tank.      Drain   the   fuel   tank   after engine preservation. (8)    Exterior Surfaces. Coat exposed machined     ferrous     metal     surfaces     with     Type     P-6 preservative   (CL)   conforming   to   Specification   MIL-C- 11796  Class3.    If  the  preservative  is  not  available,  use Automotive  and  Artillery  Grease  (GAA)  as  specified  in the lubrication order. (9)    Batteries  and  Cables.    Disconnect  cables and secure to    battery    support    or    carrier    with    tape conforming   to   Specification   PPP-T-60,   Type   IV.   (10) Marking.  Marking shall conform to MIL-STD-129. b.    Inspection   and   Maintenance   of   Equipment   in Storage. When the item has been placed in limited Change 6 1-1