TM 5-3895-370-14&P
f.
Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test, measuring,
and diagnostic equipment used in precision measurement. Consists of comparisons of two instruments, one of which is a
certified 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, 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.
1Services Inspect test, service, adjust, align, calibrate, and/or replace.
2Fault Location/troubleshooting The process of investigating and detecting the cause of equipment malfunctions; the
act of isolating a fault within a system or unit under test (UUT).
3Disassembly/Assembly The step-by-step breakdown (taking apart) of a spare/functional group coded item to the
level of its least component, that is assigned an SMR code for the level of maintenance under consideration (i.e.,
identified as maintenance significant).
4Actions Welding, grinding, riveting, straightening, facing, machining, and/or resurfacing.
B-3. EXPLANATION OF COLUMNS IN 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 "OO."
b.
Column 2, Component/Assembly. Column 2 contains the names of components, assemblies, subassemblies,
and modules for which maintenance is authorized.
c.
Column 3, Maintenance Function. Column 3 lists the functions to be performed on the item listed in column 2.
B-2
