MAINTENANCE FUNCTIONS - Contd
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 equipments 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
Remove/Install. The act of emplacing, seating, or fixing into position an item, part, module (component or
assembly) in a manner to allow the proper functioning of the equipment or system.
Replace. The act of substituting a serviceable like type part, subassembly, or module (component or assembly for
an unserviceable counterpart.
Repair. The application of maintenance services (inspect, test, service, adjust, aline, calibrate, 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 apart, subassembly, module (component or
assemble), end item, or system.
Overhaul. The 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 normally the highest degree of maintenance performed by the Army. Overhaul does not normally return an
item to like new condition.
Rebuild. Consists of those service/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.