TM 10-8340-220-23PSECTION VII.MAINTENANCE ALLOCATION CHARTPart I. INTRODUCTION1.Generala. Part I provides a general explanation of allmaintenance and repair functions authorized at variousmaintenance levels.b.Part II designates overall responsibility for theperformance of maintenance functions on the identifiedend item or components. The implementation of themaintenance functions upon the end item or componentwill be consistent with the assigned maintenancefunctions.c. Part III. Not Applicable.d. Part IV contains supplemental instructions,explanatory notes and/or illustrations required for aparticular maintenance function.2.Explanation of Columns in Part IIa. Group Number, Column (1).The assemblygroup is a numerical group assigned to each assembly ina top down breakdown sequence. The applicableassembly groups are listed on the MAC in disassemblysequence beginning with the first assembly removed in atop down disassembly sequence.b. Assembly Group, Column (2).This columncontains a brief description of the components of eachassembly group.c. Maintenance Functions, Column (3).Thiscolumn lists the various maintenance functions (Athrough K) and indicates the lowest maintenancecategory authorized to perform these functions. Thesymbol designations for the various maintenancecategories are as follows:C-Operator or crewO-Organizational maintenanceF-Direct support maintenanceThe maintenance functions are defined as follows:A-Inspect. To determine serviceability of an itemby comparing its physical, mechanical, andelectrical characteristics with established standards.B-Test. To verify serviceability and to detectelectrical or mechanical failure by use of test equipment.C-Service. To clean, to preserve, to charge, topaint, and to add fuel, lubricants, cooling agents, and air.D-Adjust. To rectify to the extent necessary tobring into proper operating range.E-Aline. To adjust specified variable elements ofan item to bring to optimum performance.F-Calibrate. To determine the corrections to bemade in the readings of instruments or test equipmentused in precise measurement. Consists of thecomparisons of two instruments, one of which is acertified standard of known accuracy, to detect andadjust any discrepancy in the accuracy of the instrumentbeing compared with the certified standard.G-Install. To set up for use in an operationalenvironment such as an emplacement, site, or vehicle.H-Replace. To replace unserviceable items withserviceable assemblies, subassemblies, or parts.I-Repair. To restore an item to serviceablecondition. This includes, but is not limited to, inspection,cleaning, preserving, adjusting, replacing, welding,riviting, and strengthening.J-Overhaul. To restore an item to a completelyserviceable condition as prescribed by maintenanceserviceability standards using the Inspect and RepairOnly as Necessary (IROAN) technique.K-Rebuild. To restore an item to a standard asnearly as possible to original or new condition inappearance, performance, and life expectancy.This is accomplished through complete disassembly ofthe item, inspection of all parts or components, repair orreplacement of worn or un-16
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