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Page Title: APPENDIX D MAINTENANCE ALLOCATION CHART
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TM  5-4120-361-14 APPENDIX D MAINTENANCE ALLOCATION CHART Section  I. D-1. General. a. This section provides a general explanation of all maintenance and re- pair functions authorized at various maintenance levels. b.  The  Maintenance  Allocation  Chart (MAC) in Section II designates overall responsibility for the performance of maintenance functions on the identified end item or component. The   implemen- tation of the maintenance functions upon the end item or component will be con- sistent 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 on explanatory notes for a particular  maintenance  function. D-2  . Maintenance Functions. a. Inspect. To determine the ser- viceability of an item by comparing its physical, mechanical and/or electrical characteristics with established stan- dards through examination. b. Test. To verify serviceability and detect incipient failure by measur- ing the mechanical or electrical char- acteristics of an item and comparing those characteristics with prescribed standards. c.  Service.  Operations  required  per- iodically to keep an item in proper operating condition, i.e., to clean (de- contaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed air supplies. d.  Adjust.   To maintain, within pre- scribed limits,  by  bringing  into  proper or exact position, or by setting the op- erating characteristics to specified parameters. Introduction e.  Align. To adjust specified vari- able 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 or test measuring and di- agnostic equipments used in precision measurement. Consists of comparisons of two instruments, one of which is a cer- tified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being com- pared. g. Install. The act of emplacing, seating, or fixing into position an item, part, or module (component or as- sembly) in a manner to allow the proper functioning of an equipment or system. h. Replace.   The act of substituting a serviceable like type part, subassem- bly, or module (component or assembly) for an unserviceable counterpart. i. Repair. The application of main- tenance services (inspect, test, ser- vice, adjust, align, calibrate, or re- place) or other maintenance actions (welding, grinding, riveting, straight- eing, facing, remachining, or resurfac- ing) to restore serviceability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module (component or assembly), and item, or system. j.  Overhaul. That  maintenance  effort (services actions) necessary to restore an item to a completely serviceable/op- erational condition as prescribed by maintenance  standards  (i.e.,  DMWR)  in  ap- propriate technical publications. Over- haul 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 ser- vices/actions necessary for the restora- tion of unserviceable equipment to a like new condition in accordance with original manufacturing standards. Re- build is the highest degree of materiel D-1

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