TM 5-6350-264-14&P-9 NAVELEX EE 181-AA-OMI-100/E121 DZ-204 T.O.  31S9-2FSS9-1-9 APPENDIX B MAINTENANCE ALLOCATION CHART Section I.  INTRODUCTION B-1. GENERAL. a. This section provides a general explanation of    all    maintenance    and    repair    functions authorized at various maintenance levels. b. Section  II  designates  overall  responsibility for the performance of maintenance functions    on    the    identified    end    item    or component.      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  special  tools  and  test equipment  required  for  each  maintenance function as referenced from section II. d. Section IV contains supplemental instructions    or    explanatory    notes    for    a particular     maintenance     function.          (Not Applicable) B-2. MAINTENANCE    FUNCTIONS.        Maintenance functions are defined as follows: a. Inspect.    To  determine  the  serviceability  of  an item    by    comparing    its    physical,    mechanical    and/or electrical     characteristics     with     established     standards through examination. b. Test.  To verify serviceability and detect incipient failure     by     measuring     the     mechanical     or     electrical characteristics of an item and comparing those characteristics with prescribed standards. c. Service.      Operations   required   periodically   to keep an item in proper operating condition, i.e., to clean, to   preserve,   to   drain,   to   paint,   or   to   replenish   fuel, lubricants, hydraulic fluids, or compressed air supplies. d. Adjust.  To maintain, within prescribed limits, by bringing  into  proper  or  exact  position,  or  by  setting  the operating characteristics to specified parameters. e. Align.    To  adjust  specified  variable  elements  of an item to bring about optimum or desired performance. f. Calibrate.  To determine and cause  corrections to  be  made,  or  to  be  adjusted  on  instruments  for  test, measuring  and  diagnostic  equipments  used  in  precision measurement. Consists of comparisons of two instruments, one of which is a certified standing of known accuracy,  to  detect  and  adjust  any  discrepancy  in  the accuracy of the instrument being compared. g. Install.  The act of  emplacing,  seating,  or  fixing into  position  an  item,  part,  or  module  in  a  manner  to allow the proper functioning of an equipment or system. h. Replace.    The  act  of  substituting  a  serviceable like  part,  subassembly,  or  module  for  an  unserviceable counterpart. i. Repair. The application of maintenance services (inspect, test, service, adjust, align, calibrate, or replace) or other maintenance actions (welding, grinding, riveting, straightening, facing, remachining, or resurfacing)    to    restore    serviceability    to    an    item    by correcting  specific  damage,  fault,  malfunction,  or  failure in a part, subassembly, module, end item or system. B-1