TM5-6115-634-14&P NAVFAC  P-8-647-14&P T0-35C2-3-445-14 TM-6115-14&P/1 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. The Maintenance Allocation Chart (MAC) in Section II designates overall authority and responsibility for the performance  of  maintenance  functions  on PU  794/G. It does not include the generator set or trailer components except modifications included in TM5- 6115-464-12 and TM9-330-205-14&P. The application of the maintenance functions to the end item or component will be consistent with the capacities and capa- bilities  of  designated  maintenance levels. c. Section III lists the tools and test equipment (both special tools and common tool sets) required for each maintenance  function  as  referenced  from Section  II. d. Section IV contains supplemental instructions and explanatory notes for a particular  maintenance  function. B-2. Maintenance Functions. Mainte- nance functions will be limited to and defined as follows: 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 (e.g., sight, sound,  or  feel). b. Test. To verify serviceability by measuring  the  mechanical,  pneumatic, hydraulic, or electrical characteristics of an item and comparing those char- acteristics with prescribed standards. c. Service. Operations  required periodically to keep an item in proper operating condition, i.e., to clean (includes decontaminate, when required), preserve, drain, paint, or to replenish fuel, lubricants, chemical fluids, or gases. d. Adjust. To maintain or regulate, within prescribed limits, by bringing into proper or exact position, or by setting  the  operating  characteristics  to specified parameters. e. Aline. 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 diagnostic  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 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 or repair part of module (component or assembly) in a manner to allow the proper functioning of an equipment or system. h. Replace. To remove an unservice- able item and install a serviceable counterpart in its place. “Replace” is authorized by the MAC and is shown as the third position code of the SMR code. i. Repair. The application of main- tenance services, including fault loca- tion/troubleshooting,   removal/installa- tion,  disassembly/assembly  procedures and  maintenance  actions  to  identify troubles  and  restore  serviceability  to B-1