Section I. INTRODUCTION
This appendix provides a summary of the maintenance operations for AN/GGC-3(*) or AN/GGC-53(*). 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 oan item 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 point, or to replenish fuel, lubricants, hydraulic fluids, or compressed air
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. 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 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 an unserviceable counterpart.
i. Repair. The application of maintenance service (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.
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 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.
k. 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 materiel
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 equipment/components.
B-3. Column Entries
a. Column 1, Group Number. Column 1 lists group numbers, the purpose of which is to identify components,
assemblies, subassemblies, and modules with the next higher assembly.
b. Column 2, Component/Assembly.
Column 2 contains the noun names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.