TM   10-7360-206-23P T.O.   35E4-172-5-4 UNIT AND DIRECT SUPPORT MAINTENANCE REPAIR PARTS AND SPECIAL SECTION   I.   INTRODUCTION TOOLS LIST 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 and direct support maintenance of the Kitchen, Field Trailer Mounted. 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  this  section,  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 parts kits are listed separately in their own functional group within Section II. Repair parts for repairable special tools are also listed in this 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-references  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 number in alphanumeric sequence and cross references NSN, CAGEC and part  number. 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 instruction, as shown in the following breakout: 1