Test. To verify serviceability by measuring the
characteristics with prescribed standards.
Service. Operations required periodically to
keep an item in proper operating condition; e.g., to clean
(includes decontaminate, when required), to preserve, to
drain. to paint, or to replenish fuel, lubricants, chemical
fluids, or gases.
prescribed limits, by bringing into proper position, or by
Align. To adjust specified variable elements of
an item to bring about optimum or desired performance.
Calibrate. To determine and cause corrections to
be made or to be adjusted on instruments or test,
measuring, and diagnostic equipment used in precision
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.
Removal/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.
Replace. To remove an unserviceable item and
install a serviceable counterpart in its place. "Replace" is
authorized by the MAC and assigned maintenance level
is shown as the 3d position code of the SMR code.
Repair. The application of maintenance services
procedures, and maintenance actions 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.
(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
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 materiel maintenance applied to Army equipment.
The rebuild operation includes the act of returning to zero
those age measurement (e.g.. hours/miles) considered
in classifying Army equipment/components.
Explanation of Columns in the MAC, Section
Column I. Group Number. Column 1 lists
functional group code numbers, the purpose of which is
assemblies, subassemblies. and modules with the next
Column 2, Component/Assembly. Column 2
contains the item names of components, assemblies,
subassemblies, and modules for which maintenance is
Column 3, Maintenance/Function. Column 3
lists the functions to be performed on the Item listed in
Column 2. (For detailed explanation of these functions,
see paragraph 13-2.)
Column 4, Maintenance Level. Column 4
specifies each level of maintenance authorized to
perform each function listed in Column 3, by indicating a
work time required (expressed as man-hours in whole
hours or decimals) In the appropriate subcolumn. This
work-time figure represents the active time required to
perform that maintenance function at the indicated level
of maintenance. If the number or complexity of the tasks
within the listed maintenance function vary at different
maintenance levels, appropriate work-time figures are
shown for each level. The work-time figure represents
the average time required to restore an item (assembly,
subassembly, component, module, end item, or system)
to a serviceable condition under typical field operating
(including any necessary disassembly/assembly time),
troubleshooting/fault location time, and quality assurance
time in addition to the time required to perform the
specific tasks identified for the maintenance functions
authorized in the maintenance allocation chart. The
symbol designations for the various maintenance levels
are as follows:
Operator or crew maintenance
Direct support maintenance
Specialized Repair Activity (SRA)
General support maintenance
Column 5, Tools and Test Equipment Reference
Code. Column 5 specifies, by code, those common tool
sets (not individual tools), common TMDE, special tools,
special TMDE, and special support equipment required
to perform the designated function. Codes are keyed to
tools and test equipment in Section III.
Column 6, Remarks. When applicable, this
column contains a letter code, in alphabetical order,
keyed to the remarks contained in