ARMY TM 9-2815-254-24 AIR FORCE TO 38G1-94-2 APPENDIX  B MAINTENANCE  ALLOCATlON  CHART SECTlON I. INTRODUCTION B-1 General. a. This  section  provides  a  general  explanation  of  all  maintenance  and  repair  functions  authorized  at  various  main- tenance categories. b. The Maintenance Allocation Chart (MAC) in section II designates overall authority and responsibility for the performance  of  maintenance  functions  on  the  diesel  engine  and  its  components.  The  application  of  the  mainte- nance  functions  to  the  engine  or  components  will  be  consistent  with  the  capacities  and  capabilities  of  the  desig- nated maintenance categories. c. Section  III  lists  the  tools  and  test  equipment  (both  special  tools  and  common  tool  sets)  required  for  each  mainte- nance function as referenced from section II. d. Section IV contains supplemental instructions and explanatory notes for particular maintenance functions. B-2 Maintenance Functions. Maintenance functions will be limited to and defined as follows: a. b. c. d. e. Inspect.  To  determine  the  serviceability  of  an  item  by  comparing  its  physical,  mechanical,  and/or  electrical  char- acteristics with established standards through examination (e.g., by sight, sound, or feel). Test. To verify serviceability by measuring the mechanical, pneumatic, or electrical characteristics of an item and comparing those characteristics with prescribed standards. Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean (include decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids, or gases. Adjust. To maintain or regulate, within prescribed limits, by bringing into proper or exact position, or by setting the operating characteristics to specified parameters. Aline. To adjust specified variable elements of an item to bring about optimum or desired performance. B-1