TM 5-3805-254-20P UNIT MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS SECTION I.  INTRODUCTION 1. Scope. This RPSTL lists and authorizes spares and repair parts; special tools; special test, measurement, and diagnostic equipment (TMDE); and other special support equipment required   for   performance   of   Unit   Maintenance   of   the Dump Truck.  It authorizes the requisitioning, issue, and disposition  of  spares,  repair  parts  and  special  tools  as indicated  by  the  source,  maintenance  and  recoverability (SMR) codes. 2. General. In  addition  to  Section  I.    Introduction,  this  Repair  Parts and   Special   Tools   List   is   divided   into   the   following sections: a. Section   II.      Repair   Parts   List.      A   list   of spares and repair parts authorized by this RPSTL for use in    the    performance    of    maintenance.        The    list    also includes  parts  which  must  be  removed  for  replacement of  the  authorized  parts.     Parts   lists   are   composed   of functional  groups  in  ascending  alphanumeric  sequence, with  the  parts  in  each  group  listed  in  ascending  figure and item number sequence.  Bulk materials are listed in item name sequence.  Repair kits are listed separately in their own functional group within Section II.  Repair parts for  reparable  special  tools  are  also  listed  in  the  section. Items listed are shown on the associated illustration(s)/figure(s). b. Section  III.    Special  Tools  List.    A  list  of special  tools,  special  TMDE,  and  other  special  support equipment  authorized  by  this  RPSTL  (as  indicated  by Basis of Issue (BOI) information in DESCRIPTION AND USABLE   ON   CODE   column)   for   the   performance   of maintenance. c. Section  IV.    Cross-reference  Indexes.     A list,     in     National     Item     Identification     Number     (NIIN) sequence,     of all National stock numbered items appearing in the listing, followed by a list in alphanumeric sequence  of  all  part  numbers  appearing  in  the  listings. National   stock   numbers   and   part   numbers   are   cross- referenced  to  each  illustration/figure  and  item   number appearance.     The   figure   and   item   number   index   lists figure and item numbers in alphanumeric sequence and cross- references NSN, CAGE, and part numbers. 3. Explanation of Columns (Sections II and III). a. ITEM   NO.      (Column   (1)).      Indicates   the number    used    to     identify     items     called     out     in     the illustration. b. SMR   CODE   (Column   (2)).      The   Source, Maintenance,   and   Recoverability   (SMR)   code   is   a   5- position code containing supply/requisitioning information,  maintenance  category  authorization  criteria, and  disposition  instructions,  as  shown  in  the  following breakout: *Complete Repair: Maintenance capacity, capability, and authority  to  perform  all  corrective  maintenance  tasks  of the "Repair" function in a use/user environment in order to restore serviceability to a failed item. (1) Source Code.  The source code tells you how to    get    an    item    needed    for    maintenance,    repair,    or overhaul   of   an   end   item/equipment.      Explanations   of source codes follows: 1