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APPENDIX B MAINTENANCE ALLOCATION
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TM-5-4210-220-12 Truck Firefighting: Powered Pumper: Foam and Water 500-GPM Capacity; Centrifugal Pump Power Takeoff Driven Manual
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EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III - TM-5-4210-220-12_727
TM 5-4210-220-12 group  coded  item  to  the  level  of  its  least  componency  identified  as  maintenance  significant  (i.e.,  assigned  an SMR code) for the category of maintenance under consideration) procedures, and maintenance actions (welding, grinding,   riveting,   straightening,   facing   remachining,   and/or   resurfacing)   to   identify   troubles   and   restore serviceability  to  an  item  by  correcting  specific  damage,  fault,  malfunction,  or  failure  in  a  part,  subassembly, module (component or assembly), end item, or system. j. Overhaul.    To  restore  an  item  to  a  complete  serviceable  condition  as  prescribed  by  maintenance  serviceable standards. k. Rebuild.    To  restore  an  item,  to  a  standard  as  nearly  as  possible  to  original  or  new  condition  in  appearance, performance,   and   life   expectancy.      This   is   accomplished   through   the   maintenance   technique   of   complete disassembly of the item, inspection of all parts or components, repair or replacement of worn or unserviceable elements using original manufacturing tolerances and specifications and subsequent reassembly of the item. B-3.  EXPLANATION OF COLUMNS IN THE MAC, SECTION II. a. Column  1,  Group  Number.    Column  1  lists  functional  group  numbers,  the  purpose  of  which  is  to  identify maintenance  significant  components,  assemblies,  subassemblies,  and  modules  with  the  next  higher  assembly. End item group number shall be "00". b. Column  2,  Component/Assembly.    Column  2  contains  the  names  of  components,  assemblies,  subassemblies, and modules for which maintenance is authorized. c. Column 3, Maintenance Functions.  Column 3 lists the functions to be performed on the item listed in column 2 (For detailed explanation of these functions, see paragraph B-2). d. Column 4, Maintenance Category.  Column 4 specifies, by the listing of a "worktime" figure in the appropriate subcolumn(s),  the  category  of  maintenance  authorized  to  perform  the  function  listed  in  column  3.    This  figure represents   the   active   time   required   to   perform   that   maintenance   function   at   the   indicated   category   of maintenance.  If the number or complexity of the tasks within the listed maintenance function vary at different maintenance categories, appropriate "worktime" figures will be shown for each category.  The number of task- hours specified by the "worktime" figures will be shown for each category.  The number of task-hours specified by the   "worktime"   figure   represents   the   average   time   required   to   restore   an   item   (assembly,   subassembly, component,  module,  end  item,  or  system)  to  a  serviceable  condition  under  typical  field  operating  conditions. This time includes preparation time, (including any necessary disassembly/subassembly time), troubleshooting/fault location time, and quality assurance/quality control time in addition to the time required to perform  the  specific  tasks  identified  for  the  maintenance  functions  authorized  in  the  maintenance  allocation chart.  The symbol designations for the various categories are as follows: C Operator/Crew O Unit Maintenance F Intermediate Direct Support Maintenance H Intermediate General Support Maintenance D Depot Maintenance e. Column 5, Tools and Equipment.  Column 5 specifies by code, those common tools sets (not individual tools), and special tools, TMDE, and support equipment required to perform the designated function. f. Column 6, Remarks.  This column shall, when applicable, contain a letter code, in alphabetic order, which shall be keyed to the remarks in Section IV. B-2

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