SECTION I TM 9-2320-283-24P UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LISTS (INCLUDING DEPOT MAINTENANCE PARTS) SECTION 1.  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,   Direct   Support   and General Support Maintenance of the Truck, Tractor, Line Haul,  M915A1.    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 repairable   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.  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 Ill). 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