TM 5–6115-323-14 APPENDIX   C MAINTENANCE  ALLOCATION  CHART (Army  Only) Section I. INTRODUCTION C-1.  General a. This  section  provides  a  general  explanation of  all  maintenance  and  repair  functions  author- ized  at  various  maintenance  levels. b. Section   II   designates   overall   responsibility for  the  performance  of  maintenance  functions  on the  identified  end  item  or  component  and  the work  measurement  time  required  to  perform  the functions   by   the   designated   maintenance   level. The  implementation  of  the  maintenance  functions upon the end item or component will be consistent with  the  assigned  maintenance  functions. c.  Section  III  lists  the  tools  and  test  equipment required  for  each  maintenance  function  as  refer- enced  from  Section  II. C-2. Explanation of Columns in Section II a. Column  (l),  Group Number.  Column 1 lists group  numbers  to  identify  related  components, assemblies, subassemblies, and modules with their next  higher  assembly.  The  applicable  groups  are listed  in  the  MAC  in  disassembly  sequence  begin- ning  with  the  first  group  removed. b.  Column  (.2),  ComponentlAssembly.  This  col- umn  contains  the  noun  names  of  components, assemblies,  subassemblies  and  modules  for  which maintenance  is  authorized. c. Column  (3),  Maintenance  Functions.  This  col- umn  lists  the  functions  to  be  performed  on  the item  listed  in  Column  2.  The  maintenance  func- tions are defined as follows: (1) Inspect.  To  determine  serviceability  of  an item by comparing its physical, mechanical, and/or electrical   characteristics   with   established   stand- ards  through  examination. (2)  Test.  To  verify  serviceability  and  detect incipient  failure  by  measuring  the  mechanical  or electrical  characteristics  of  an  item  and  compar- ing   those   characteristics   with   prescribed   stand- ards. (3) Service.  Operations  required  periodically to keep an item in proper operating condition, i.e., to  clean  (decontaminate),  to  preserve,  to  drain,  to paint,  or  to  replenish  fuel,  lubricants,  hydraulic fluids, or compressed air supplies. (4) Adjust.  To  maintain  within  prescribed  lim- its, by bringing into proper or exact position, or by setting  the  operating  characteristics  to  specified parameters. (5)  Align.  To  adjust  specified  variable  ele- ments   of   an   item   to   bring   about   optimum   or desired  performance. (6) Calibrate.  To  determine  and  cause  correc- tions to be made or to be adjusted on instruments or  test  measuring  and  diagnostic  equipments  used in  precision  measurement.  Consists  of  comparison of   two   instruments,   one   of   which   is   a   certified standard  of  known  accuracy,  to  detect  and  adjust any  discrepancy  in  the  accuracy  of  the  instrument being  compared. (7)  Install.  The  act  of  emplacing,  seating,  or fixing  into  position  an  item,  part,  or  module  (com- ponent   or   assembly)   in   a   manner   to   allow   the proper  functioning  of  an  equipment  or  system. (8) Replace.  The  act  of  substituting  a  service- able  like  type  part,  subassembly,  or  module  (com- ponent  or  assembly)  for  an  unserviceable  counter- part. (9)  Repair.  The   application   of   maintenance services  (inspect,  test,  service,  adjust,  align,  cali- brate,   or   replace)   or   other   maintenance   actions (welding,  grinding,  riveting,  straightening,  facing, remachining  or  resurfacing)  to  restore  serviceabil- ity to an item by correcting specific damage, fault, malfunction,   or   failure   in   a   part,   subassembly, module  (component  or  assembly),  end  item,  or system. (10) Overhaul.  That  maintenance  effort  (serv- ice/action)  necessary  to  restore  an  item  to  a  com- C-1