e. Column (5) Tools and Equipment. Column 5 specifies, by code those common tool sets (not
individual tools) and special tools, test, and support equipment required to perform the designated
f. Column (6) Remarks. Column 6 references any amplifying remarks.
B-3. MAINTENANCE FUNCTIONS DEFINED
a. Inspect. To closely and critically examine (e.g., sight, sound, or feel) an item to detect errors,
flaws, wear, etc., and to determine its condition and serviceability by comparing its physical
mechanical/electrical characteristics within established standards.
b. Test. To verify serviceability and detect incipient failure by measuring the mechanical or electrical
characteristics of an item and comparing those characteristics with prescribed standards.
c. Service. Operations required periodically to keep an item in proper operating condition: i.e. to
clean (decontaminate), to preserve, to drain, to paint or to replenish fuel, lubricants, hydraulic fluids, or
compressed air supplies.
d. Adjust. To maintain, within prescribed limits, by bringing into proper or exact position, or by
setting the operating characteristics to specified parameters.
e. Align. To adjust specified variable elements of an item to bring about optimum or desired
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 comparison 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. Install. The act of emplacing, seating, or fixing into position an item, part, or module (component
or assembly) in a manner to allow the proper functioning of an equipment or system.
h. Replace. The act of substituting a serviceable like type part, subassembly, or module (component
or assembly) for an unserviceable counterpart.
i. Repair. The application of maintenance services (inspect, test, service, adjust, align, calibrate, or
replace) or other maintenance actions (welding, grinding, riveting, straightening, facing remachining, or
resurfacing) to 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) necessary to restore an item to a completely
serviceable/operational condition as prescribed by maintenance standards (i.e., DMWR) in appropriate
technical publications. Overhaul is the normally the highest degree of maintenance performed by the Army.
Overhaul does not normally return an item to a like-new condition.
B-4. EXPLANATION OF COLUMNS IN SECTION III
a. Column (1) Tool or Test Equipment Reference Code. The tool or test equipment reference
code correlates with a code in Column 5 of the MAC.
b. Column (2) Maintenance Level. The lowest level of maintenance authorized to use the tool or
c. Column (3) Nomenclature. Name or identification of the tool or test equipment.