TM 5-3820-205-10-2 CHAPTER 4 DEMOLITION OF THE JAW CRUSHER TO PREVENT ENEMY USE 82.  General When    capture    or    abandonment    of    the    jaw crusher  to  an  enemy  is  imminent,  the  unit  commander responsible must make the decision either to destroy the equipment  or  to  render  it  inoperative.    Based  on  this decision,   orders   are   issued   which   cover   the   desired extent of destruction.  Whatever method of demolition is employed, it is essential to destroy the same vital parts of all jaw crushers and all corresponding repair parts. 83.        Demolition    to    Render    the    Jaw    Crusher Inoperative a. Demolition  by  Mechanical  Means.    Use  sledge hammers,  crowbars,  picks,  axes,  or  other  heavy  tools that  may  be  available,  together  with  the  tools  normally included with the jaw crusher, to destroy the following: Note The   following   steps   are   minimum requirements for this method. (1) Fuel pump, manifold, radiators, fuel filter, and instruments. (2) Discharge and feeder conveyors. (3) Motors, drive belts, and pulleys. (4) Conveyor rollers, tires, and control box. (5) Lights,    electrical    panels,    and    electrical cables. b. Demolition  by  Misuse.      Perform   the   following steps to render the jaw crusher inoperative. Note The   following   steps   are   minimum requirements for this method. (1) Drain the engine. (2) Drain all gear housings. (3) Drain hydraulic tank. (4) Throw    sand,    mud,    and    other    foreign substances into the oil filter openings and engine crankcase. (5) Drain the cooling system. (6) Throw  dirt  or  sand  into  the  radiator  and fuel tank. (7) Operate   the   engine   at   full   speed   until failure occurs. 84.  Demolition by Explosives or Weapons Fire a. Explosives.      Place   as   many   of   the   charges shown on figure 62 as the situation permits and detonate them   simultaneously   with   a   detonating   cord   and   a suitable detonator. Note The   charges   in   steps   1   and   2   are minimum requirements for this method. (1) One ½  lb charge between injection pump and engine block. (2) Two ½  lb charges on engine clutch. (3) One ½  lb charge on conveyor motor. (4) Two   ½     lb    charges    on    main    electrical panel. (5) One   ½     lb   charge   on   vibrating   screen motor. (6) Two ½  lb charges on axle housings. (7) One   ½    lb   charge   on   feeder   conveyor motor. (8) Six ½  lb charges between crusher jaws. b. Weapons Fire.  Fire on the jaw crusher with the heaviest practical weapons available. 61