B-2. MAINTENANCE FUNCTIONS Continued
Adjust. To maintain, within prescribed limits, by bringing into proper or
exact position, or by setting the operating characteristics to specified
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 measurement. Consists of comparisons of two instru-
ments, one of which is a certified standard of known accuracy, to detect
and adjust any discrepancy in the accuracy of the instrument being
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.
Replace. The act of substituting a serviceable like part, subassembly, or
module (component or assembly) for an unserviceable counterpart.
Repair. The application of maintenance services or other maintenance
actions to restore serviceability to an item by correcting specific dam-
age, fault, malfunction, or failure in a part, subassembly, module (com-
ponent or assembly), end item, or system.
Overhaul. That maintenance effort (services/actions) necessary to
restore an item to a completely serviceable/operational condition as pre-
scribed by maintenance standards (i.e., DMWR) in appropriate technical
publications. Overhaul is normally the highest degree of maintenance
performed by the Army. Overhaul does not normally return an item to like
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 equipments/components.