TM 5-4220-209-12&P SECTION VIII. ILLUSTRATED PARTS BREAKDOWN 8-1. MODEL        COVERED.        This    illustrated    parts breakdown   covers   the   Model   DMC-AA,   diesel   engine driven,    skid    mounted    air    compressor.        The    unit    is manufactured  by  Davey  Compressor  Company  (FSCM 16004),  Cincinnati,  Ohio  45242.    Part  number  83207  is assigned to the unit assembly. 8-2. PARTS  THAT  ARE   LISTED.  In  general,  the assemblies and parts installed at the time the end items were    manufactured    are    listed    and    identified    in    this manual. When   an   assembly   or   part   (including   vendor   items), which   is   different   from   the   original,   is   installed   during repair,  the  assembly  or  part  must  match  form,  fit  and function.  Interchangeable and substitute assemblies and parts are not listed in this manual.  When a standard size part can be replaced with an oversize or undersize part, the  latter  parts,  showing  sizes,  are  also  listed.    Repair Parts Kits and Quick Change Units are listed when they are available for replacement. 8-3.   LISTING   OF   SIMILAR   ASSEMBLIES.  When similar  assemblies  contain  approximately  51%  or  more of   identical   parts,   the   assemblies   are   combined   and listed as follows. a. The  assemblies  are  listed  first  followed  by detail parts. b. A   part   common   to   all   assemblies   in   the same quantity is listed once. c. A part common to all assemblies in differing quantities is listed once for each quantity and identified to which assembly each listing pertains. d. Parts   peculiar   to   an   assembly   are   listed once and identified to which assembly each pertains. 8-4.    PARTS    IN    KITS.    This  publication  reflects  the listing of repair parts kits.  Certain replacement parts are stocked  only  in  kits.    Standard  parts  and  parts  having multi-application are stocked in kits.  Kit parts should not be ordered from separate stock to make up a kit. 8-5. When   replacement   parts   of’   an   assembly   are available   int   the   form   of’   kits,   the   words   (Repair   kit available)    follows    the    description    of    the    applicable assembly.      The   detail   parts   of   the   assembly   that   are contained in the kit are identified by a symbol before the part number.  A footnote follows the Maintenance Parts List (MPL) to define the symbol. The kit listing follows the last detail part of the assembly in  the  same  indentation  as  the  assembly.      Kit   source codes, assigned to the kits and their components appear in the SMR column of the Numerical Index, Section VIII. 8-6. SYMBOLS   AND,ABBREVIATIONS.      Symbols and  abbreviations  used  in  the  MPL  are  in  accordance with    Military    Standard,    MIL-STD-12,    or    are    defined below. (AP) - This abbreviation,  found in the description column, indicates the part is an "attaching   part"   for    the    next    higher assembly or part. AR - This abbreviation stands for "as required." # This symbol, inserted flush right following a part number  in  the  MPL  for  Government  Furnished Equipment    (GFE)    and    Contractor    Furnished Equipment   (CFE),   means   that   detail   parts   are listed  in  a  separate  manual.    Refer  to  "Related Publications"  paragraph  of  this   Introduction   for publication number, when applicable. * This symbol, inserted flush right following a part number   in   the   MPL,   means   "Requisition   this marking in  accordance  with  the  requirements  of AFR   64."   The   symbol   is   applied   to   identifying drawing  numbers  for  decalcomanias,  metalcals, and    vinyl    film    markings.        When    symbol    is inserted  in  front  of  a  part  number,  footnote  at end of parts list should be referenced. ‚ This  symbol,  also,  ‚‚  inserted  in  front  of  a  part number in the MPL,, indicates the footnote  at the end of the parts list for that assembly should be referenced.  In general, the symbol is used to indicate a component of a kit. 8-1