TM 5-3810-305-23
0168
The Army Maintenance System MAC - Continued
2. Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical characteristics
of an item and comparing those characteristics with prescribed standards on a scheduled basis, i.e., load
testing of lift devices and hydrostatic testing of pressure hoses.
3. Service. Operations required periodically to keep an item in proper operating condition; e.g., to clean
(includes decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants,
chemical fluids, or gases. This includes scheduled exercising and purging of recoil mechanisms. The
following are examples of service functions:
a. Unpack. To remove from packing box for service or when required for the performance of
maintenance operations.
b. Repack. To return item to packing box after service and other maintenance operations.
c. Clean. To rid the item of contamination.
d. Touch up. To spot paint scratched or blistered surfaces.
e. Mark. To restore obliterated identification.
4. Adjust. To maintain or regulate, within prescribed limits, by bringing into proper 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 on 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. Installation 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 (ammunition only). 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 ammunition
identification.
9. Replace. To remove an unserviceable item and install a serviceable counterpart in its place. Replacement
is authorized by the MAC and the assigned maintenance level is shown as the third position code of the
Source, Maintenance and Recoverability (SMR) code.
10. Repair. Repair is 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
cause 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) of 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.
0168-2
03/15/2011Rel(1.8)root(macintrowp)wpno(A00186)
