Section  I INTRODUCTION 1. Scope This  manual  lists  repair  parts,  special  tools,  test and  support  equipment  required  for  the  perform- ance of organizational, direct support and general support  maintenance  of  the  tank  and  pump  unit. 2. General This Repair Parts and Special Tools List is di- vided  into  the  following  sections: a.  Prescribed  Load  Allowance  (PLA)—Section II. A composite listing of repair parts, special tools,  test  and  support  equipment  having  quanti- tative allowances for initial stockage at the or- ganization  level. b. Repair Parts—Section III.  A list of repair parts authorized for the performance of mainte- nance at the organizational level in figure and item number sequence. c. Special  Tools,  Test  and  Support  Equipment —Section IV.  (NOT  APPLICABLE) d. Repair  Parts—Section  V.  A list of repair parts authorized for the performance of mainte- nance at the direct support and general support level in figure and item number sequence. e. Special  Tools,  Test  and  Support  Equipment —Section  VI.  (NOT   APPLICABLE) f. Federal  Stock  Number  and  Reference  Num- ber  Index—Section  VII.  A  list  of  Federal  stock numbers in ascending numerical sequence, fol- lowed by a list of reference numbers appearing in all of the listings, in alpha-numeric sequence, cross-referenced  to  the  illustration  figure  num- ber and item number. Note.    Items     not    illustrated     are    cross-referenced    to    as- sembly   group   number. 3. Explanation of Columns The following provides an explanation of columns in the tabular lists in Sections II through VI. a.  Source,  Maintenance,  and  Recoverability Codes (SMR). Note.     Common      hardware     items     known     to     be     readily available   in   Army   supply   channels   are   assigned   Maintenance codes    only.    Source    codes,    Recoverability    codes,    and    Main- tenance   Allowances   are   not   assigned   this   category. (1)  Source  code  indicates  the  selection  status and  source  for  the  listed  item.  Source  codes  used are: Code P M A x Xl X2 G Explanation Repair   parts   which   are   stocked   in   or   supplied   from the    GSA/DSA,    or    Army    supply    system    and    au- thorized    for    use    at    indicated    maintenance    cate- gories. Repair    parts    which    are    not    procured    or    stocked, but   are   to   be   manufactured   in   indicated   mainte- nance    levels. Assemblies    which    are    not    procured    or    stocked    as such,    but    are    made    up    of    two    or    more    units. Such  component  units  carry  individual  stock  num- bers    and    descriptions,    are    procured     and    stocked separately     and     can     be     assembled     to     form     the required   assembly   at   indicated   maintenance   cate- gories. Parts    and    assemblies    which    are    not    procured     or stocked    and    the    mortality    of    which    normally    is below   that   of   the   applicable   end   item   or   compo- nent.   The   failure   of   such   part   or   assembly   should result    in    retirement    of    the    end    item    from    the supply   system. Repair    parts    which    are    not    procured     or    stocked. The    requirement    of    such    items    will    be    filled    by use   of   the   next   higher   assembly   or   component. Repair   parts   which   are   not   stocked.   The   indicated maintenance   category   requiring   such   repair   parts will    attempt   to   obtain   them   through   cannibaliza- tion.   Where   such   repair   parts   are   not   obtainable through cannibalization, requirements will be requisitioned, with accompanying  justification, through   normal   supply   channels. Major     assemblies     that     are     procured      with     PEMA funds   for   initial   issue   only   as   exchange   assemblies at   DSU   and   GSU   level.   These   assemblies   will   not be   stocked   above   GS   and   DS   level   or   returned   to depot   supply   level. (2) Maintenance  code  indicates  the  lowest category of maintenance authorized to install the listed  item.  The  maintenance  codes  are: Code Explanation o Organizational   maintenance F Direct   support   maintenance H General   support   maintenance (3) Recoverability code indicates whether unserviceable  items  should  be  returned  for  re- covery  or  salvage.  Items  not  coded  are  expend- able.  Recoverability  codes  are: v