TM 5-6635-386-12&PAPPENDIX B - CONTINUEDB-3. THE MAINTENANCE FUNCTIONS ARE DEFINED AS FOLLOWS:a Inspect. To determine the serviceability of an item by comparing its physical, mechanical and/or electricalcharacteristics with established standards through examinationb Test. To verify serviceability and detect incipient failure by measuring the mechanical or electrical characteristicsof 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 operatingcharacteristics 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 anddiagnostic equipments used in precision measurement. Consists of comparisons of two instruments, one of which is acertified standard of known accuracy, to detect and adjust any discrepancy In the accuracy of the instrument beingcompared.g. Install The act of emplacing, seating, or fixing into position an item, part, or module (component or assembly) ina 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) orother maintenance actions (welding, grinding, riveting, straightening, facing, remachining or resurfacing) to restoreserviceability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module(components or assembly), end item, or system.j. Overhaul. That maintenance effort (service/action) necessary to restore an item to a completelyserviceable/operational condition as prescribed by maintenance standards (i e , DMWR) in appropriate technicalpublications. Overhaul is normally the highest degree of maintenance performed by the Army. Overhaul does not normallyreturn an item to like new condition.k. Rebuild. Consists of those services/actions necessary for the restoration of unserviceable equipment to a likenew condition in accordance with original manufacturing standards Rebuild is the highest degree of materiel maintenanceapplied to Army equipment. The rebuild operation includes the act of returning to zero those age measurements(hours/miles, etc.) considered for classifying Army equipments/components.B-2
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