Section I. INTRODUCTION
This appendix provides a summary of the maintenance operations for Antenna Group OE-303/GRC. It
authorizes categories of maintenance for specific maintenance functions on repairable items and
components and the tools and equipment required to perform each function. This appendix may be
used as an aid in planning maintenance operations.
B-2. Maintenance Function.
Maintenance functions will be limited to and defined as follows:
a. Inspect. To determine the serviceability of an idea by comparing its physical, mechanical, and/or
electrical characteristics with established standards through examination.
b. Test. To verify serviceability and to 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 the specified parameters.
e. Aline. 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 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 compared.
g. 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.
h. Replace. The act of substituting a serviceable like type part, subassembly, or module (component
or assembly) for the unserviceable counterpart.
i. Repair. The application of maintenance services (inspect, test, service, adjust, align, 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 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 appropri-
ate 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.
k. Rebuild. Consists
of those services/actions necessary for the restoration
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.