1971 US Army Vietnam War OPERATORS ... - Survival Books

WWW.SURVIVALEBOOKS.COMC-1. Generala. The MAC assigns authorized maintenancefunctions to each maintenance category. Maintenancefunctions are assigned to the lowest maintenancecategory, as warranted by past experience in thefollowing considerations:(1) Skills available.(2) Man hours available vs. Maintenancefunction manhour requirements.(3) Tools and test equipment authorized.b. The basic entries on the chart list functionalgroups applicable to the end items which may requiremaintenance parts. The term functional group appliesto assemblies and subassemblies but not to piece parts.Entries are brief, general descriptions without stock orpart numbers, in order to minimize need for subsequentchange; however, entries permit positive identification.C-2. Maintenance FunctionsMaintenance functions are limited to and defined asfollows:a. INSPECT. To determine serviceability of anitem by comparing its physical, and mechanicalcharacteristics with established standards.b. TEST. To verify serviceability and to detectmechanical failure by use of test equipment.c. SERVICE. To clean and to preserve. If it isdesired that elements, such as painting and lubricating,be defined separately, they may be so listed.d. ADJUST. To rectify to the extent necessary tobring into proper operating range.e. ALIGN. To adjust specified variable elementsof an item to bring to optimum performance.f. CALIBRATE. To determine corrections to bemade in readings of instruments or test equipment usedin precise measurement. Consists of comparison of twoinstruments, one of which is a certified standard ofAPPENDIX CMAINTENANCE ALLOCATION CHART (MAC)Section I. INTRODUCTIONTM 9-1330-200-12/OP 3833 1 st Rev. Vol 2/TM 1330-12/1Aknown accuracy, to detect and adjust any discrepancy inaccuracy of the instrument being compared with thecertified standard.g. INSTALL. To remove and replaceunserviceable parts or components.h. REPLACE. To replace unserviceable items withserviceable assemblies, subassemblies, or parts.i. REPAIR. To restore an item to serviceablecondition through correction of a specific failure orunserviceable condition.j. OVERHAUL. To restore an item to acompletely serviceable condition as prescribed bymaintenance serviceability standards.k. REBUILD. To restore an item, as nearly aspossible, to original or new condition: in appearance,performance and life expectancy. This is accomplishedthrough the maintenance technique of completedisassembly of the item, inspection of all parts orcomponents, replacement of unserviceable elements,and subsequent reassembly of the item.l. SYMBOLS. The uppercase letter placed in theappropriate column indicates the lowest level at whichthat particular maintenance function is to be performed.C-3. Explanation of FormatPurpose and use of the format are as follows:a. Column 1, Group number. Column 1 lists groupnumbers, the purpose of which is to identifycomponents, assemblies, subassemblies and moduleswith the next higher assembly.b. Column 2, Functional group. Column 2 lists thenoun names of components, assemblies, subassembliesand modules on which maintenance is authorized.C-1