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TM 5-5430-248-13&P
4. Adjust. To maintain or regulate, within prescribed limits, by brining into roper position, or by
setting the operating characteristics to specified parameters.
5. Align. To adjust specified variable elements of an item to bring about optimum or desired
performance.
6. Calibrate. To determine and cause corrections to be made or to be adjusted of instruments of
test, measuring, and diagnostic equipment 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.
7. Remove/install. To remove and install the same item when required to perform service or other
maintenance functions. Install may be the act of emplacing, seating, or fixing into position a
spare, repair part, or module (component or assembly) in a manner to allow the proper
functioning of an equipment or system.
8. Paint. To prepare and spray color coats of paint so that the ammunition can be identified and
protected. The color indicating primary use is applied, preferably, to the entire exterior surface as
the background color of the item. Other markings are to be repainted as original so as to retain
proper ammunition identification.
9. Replace. To remove an unserviceable item and install a serviceable counterpart in its place
"Replace" is authorized by the MAC and assigned maintenance level is shown as the third
position code of the Source, Maintenance and Recoverability (SMR) code.
10. Repair. The application of maintenance services, including fault location/troubleshooting,
removal/installation, disassembly/assembly procedures and maintenance actions to identify
troubles and 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.
NOTE
The following definitions are applicable to the "repair" maintenance function:
Services. Inspect, test, service, adjust, align, calibrate, and/or replace.
Fault location/troubleshooting. The process of investigating and detecting the
case of equipment malfunctioning; the act of isolating a fault within a system or
Unit Under Test (UUT).
Disassembly/assembly. The step-by-step breakdown (taking apart) f a
spare/functional group coded item to the level of its least component, that is
assigned an SMR code for the level of maintenance under consideration (i.e.,
identified as maintenance significant).
Actions. Welding, grinding, riveting, straightening, facing, machining, and/or
resurfacing
11. Overhaul. That maintenance effort (service/action) prescribed to restore an item to a completely
serviceable/operational condition as required by maintenance standards in appropriate technical
publications. Overhaul is normally the highest degree of maintenance performed by the Army.
Overhaul des not normally return an item to like new condition.
12. 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 (e.g., hours/miles) considered in
classifying Army equipment/components.
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