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APPENDIX B. MAINTENANCE ALLOCATION CHART (MAC) - TM-10-4610-244-13_91
EXPLANATION OF COLUMNS IN THE MAC, SECTION II - TM-10-4610-244-13_93

TM-10-4610-244-13 Hypochlorination Unit NSN 4610-01-364-4485 Model AHY001 Manual
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TM 10-4610-244-13 TM 09476B-13/1 B-2. MAINTENANCE FUNCTIONS (Cont'd). f. Calibrate.    To  determine  and  make  corrections  or  to  adjust  instruments  or  test,  measuring,  and  diagnostic equipment used in precision measurement.  It consists of comparisons of two instruments, one being a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being compared. g. Remove/Install.  To remove and install the same item when required to perform service or other maintenance functions.  Install may be the act of emplacing, seating, or fixing into position a spare, repair part, or module (component or assembly) in a manner to allow the proper functioning of an equipment or system. h. Replace.    To  remove  an  unserviceable  item  and  install  a  serviceable  counterpart  in  its  place.    "Replace"  is authorized by the MAC and is shown as the 3rd position code of the SMR code. i. Repair.  The application of maintenance services, including fault location/trouble-shooting, removal/installation, and disassembly/assembly procedures, and maintenance actions to identify troubles and restore serviceability to an item by correcting damage, fault, malfunction, or failure in a part, subassembly, module (component or assembly), end item, or system. j. Overhaul.        That    maintenance    effort    (service/action)    prescribed    to    restore    an    item    to    a    completely serviceable/operational  condition  as  required  by  maintenance  standards  in  an  appropriate  technical  publication  (i.e., DMWR).  Overhaul is normally the highest degree of maintenance performed by the Army.  Overhaul does not normally return an item to like new condition. k. Rebuild.  Consists of those services/actions necessary for the restoration of unserviceable equipment to a like new   condition   in   accordance   with   original   manufacturing   standards.      Rebuild   in   the   highest   degree   of   material maintenance   applied   to   Army   equipment.      The   rebuild   operation   includes   the   act   of   returning   to   zero   those   age measurements (hours/miles, etc.) considered in classifying Army equipment/components. B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II. a. Column 1, Group Number.  Column 1 lists the functional group code numbers, in order to identify maintenance significant components, assemblies, subassemblies, and modules with the next higher assembly.  End item group shall be "00." b. Column 2. Component/Assembly.  Column 2 contains the name of components, assemblies, subassemblies, and modules for which maintenance is authorized. c. Column 3, Maintenance Function.  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.) B-2







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