TM 5-6115-365-15 CHAPTER 1 INTRODUCTION Section I.  GENERAL 1-1.  Scope a. This    manual    is    published    for    the    use    of personnel  to  whom  the  trailer-mounted  generator  sets, described in chapters 2 through 20, are issued. b. Each  individual  PU  generator  set  is  assigned  a chapter.    The  assigned  chapter  provides  information  on setting-up,    operation,    and    maintenance    of    ancillary equipment     (components     and     accessories     that     are peculiar to each individual PU set). c. The appropriate technical manuals published for the  trailer,  generator,  and  engine  peculiar  to  each  PU generator  set  are  referenced  in  each  chapter  and  these manuals  must  be  used  to  supplement  the  information  in this manual. Note Sets  such  as  PU-618/M  and  PU-620/M, which have only minor differences, are covered in the same chapter. 1-2.  Forms and Records a. DA    Forms    and    records    used    for    equipment maintenance  will  be  only  those  prescribed  in  DA  PAM 738-750. b. Reporting of errors, omissions, and recommendations  for  improving  this  publication  by  the individual    user    is    encouraged.        Reports    should    be submitted  on  DA  Form  2028  (Recommended  Changes to Publications) and forwarded direct to Commander, US Army Troop Support, Command, ATTN: AMSTR-MCTS, 4300 Goodfellow Boulevard, St. Louis, Mo. 63120-1798. 1-3.  External Fuel Tank Connections a. Attach  the  auxiliary  fuel  hose  from  the  auxiliary fuel tank to the three-way gate valve so that fuel may be drawn    from    the    auxiliary    tank,    by    turning    valve    to auxiliary,  and  the  primary  tank  may  be  refueled  away from the generator. b. Keep   fuel   tanks,   as   near  as   possible,   on   the same plane as base of engine. c. When  starting  engine  at  subzero  temperature, fuel   should   be   drawn   from   the   nearest   tank.      When normal engine operating temperature has been reached, fuel may be drawn from auxiliary tank. Section II.  REPAIR PARTS 1-4.  Scope This manual lists repair parts required for the performance   of   organizational,   direct   support,   general support, and depot maintenance of the generator sets. 1-5.  General a. The repair parts list is arranged as follows: (1) Individual  parts  and  major  assemblies  are listed  alphabetically  by  item  name  within  the  numbered functional groups. (2) Assembly  components  and  subassemblies are  indented  and  listed  alphabetically  by  item  name  under major assemblies. b. This    Repair    Parts    List    is    divided    into    the following parts: (1) Repair  parts  part  I.    A  list  of  repair  parts authorized   for   the   performance   of   maintenance   at   the organizational   level.      The   Prescribed   Load   Allowance (PLA)   is   those   repair   parts   quantitatively   allocated   to organizational  level  in  the  repair  parts  list.    These  items are the mandatory minimum stockage allowances. (2) Repair parts part II. A list of repair parts authorized for the performance Change 8  1-1