TM 1-8415-216-12&P
B-3. MAINTENANCE FUNCTIONS.
Maintenance Functions will be limited to and defined as follows;
a. Inspect. To determine the serviceability of an item by comparing its physical, mechani-
cal, and/or electrical characteristics with established standards through examination
(e.g., by sight, sound or feel).
b. Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic or
electrical characteristics of an item and comparing those characteristics with pre-
scribed standards.
c. Service. Operations required periodically to keep an item in proper operating condi-
tion, i.e., to clean (includes decontaminate, when required), to preserve, to drain, to
paint or to replenish fuel, lubricants, chemical fluids or gases.
d. Adjust. To maintain or regulate, 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 performance.
f. Calibrate. To determine and cause corrections to be made or to be adjusted on
instruments or test, measuring or diagnostic equipments used in precision measure-
ment. Consists of comparisons of two instruments, one of which is a certified stand-
ard 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 serv-
ice 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 man-
ner 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 third position code of
the SMR code.
i. Repair. The application of maintenance services, including fault location/troubleshoot-
ing, removal/installation, disassembly/assembly procedures and maintenance actions
to identify troubles and restore serviceability to an item by correcting specific dam-
age, 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 de-
gree of maintenance performed by the Army. Overhaul does not normally return an
item to like new condition.
B-4
