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Appendix B. MAINTENANCE ALLOCATION CHART - TM-5-4310-382-130147
EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III. - TM-5-4310-382-130149

TM-5-4310-382-13 Compressor Unit Reciprocating 15 CFM 175 PSI Gasoline Engine Driven Model 10GT8G Manual
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TM 5-4310-382-13
B-2. MAINTENANCE FUNCTIONS - Continued.
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, repair part, or module (component
or assembly) in a manner to allow the proper functioning of an equipment or system.
h. Replace. To remove an unserviceable item and install a serviceable counterpart in its place. "Replace" is
authorized by the MAC and is shown as the 3rd position code of the SMR code.
i. Repair. The application of maintenance services1, including fault location troubleshooting2, removal/installation,
and disassembly/assembly3 procedures, and maintenance actions4 to identify troubles and restore serviceability to an
item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module (component or assembly),
end item, or system.
j. Overhaul.
That maintenance effort (service/action) prescribed to restore an item to a completely
serviceable/operational condition as required by maintenance standards in appropriate technical publications (i.e.,
DMWR). Overhaul 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 services/actions necessary for the restoration of unserviceable equipment to a like
new condition in accordance with original manufacturing standards.  Rebuild is the highest degree of material
maintenance applied to Army equipment.  The rebuild operation includes the act of returning to zero those age
measurements (hours/miles, etc.) considered in classifying Army equipment/components.
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II.
a. Column 1, Group Number. Column 1 lists functional group code numbers, the purpose of which is to identify
maintenance significant components, assemblies, subassemblies, and modules with the next higher assembly. End item
group number shall be "00".
1
Services - inspect, test, service, adjust, align, calibrate, and/or replace.
2
Fault locate/troubleshoot - The process of investigating and detecting the cause of equipment malfunctioning; the
act of isolating a fault within a system or unit under test (UUT).
3
Disassemble/assemble - encompasses the step-by-step taking apart (or breakdown) of a spare/functional group
coded item to the level of its least componency identified as maintenance significant (i.e., assigned an SMR code)
for the category of maintenance under consideration.
4
Actions - welding, grinding, riveting, straightening, facing, remachinery, and/or resurfacing.
B-2






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