MAINTENANCE FUNCTIONS - TM-11-5830-263-20-P0130

TM 11-5830-263-20&P

B-2 MAINTENANCE FUNCTIONS - Continued

g. 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.

h. Replace. To remove an unserviceable item and install a serviceable counterpart in its place.

Replace is authorized by the MAC and is shown as the third position code of the SMR code.

i. Repair. The application of maintenance services1, including fault location/troubleshooting2,

removal/installation, and disassembly/assembly3, procedures, and maintenance actions4, 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.

j. 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 (i.e., DMWR). 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 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.

B-3 EXPLANATION OF COLUMNS IN THE MAC, SECTION II

(1) Group Number. Column 1 lists functional group codes numbers, the purpose of which is to

identify maintenance significant components, assemblies, subassemblies, and modules with the next

higher assembly. End item group number shall be "00".

(2) Component/Assembly. Column 2 contains the names of components, assemblies,

subassemblies, and modules for which maintenance is authorized.

(3) Maintenance Function. Column 3 lists the functions to be performed on the item listed in

column 2. (For detailed explanation of these functions, see paragraph B-2.)

Services - Inspect, test, service, adjust, align, calibrate, and/or replace.

Fault locate/troubleshoot - 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 - encompasses the step-by-step taking apart (or breakdown) of a spare/functional group coded item to the

level of its least componency identified as maintenance significant (i.e., assigned a SMR code) for the category of maintenance

under consideration.

Actions - welding, grinding, riveting, straightening, facing, remachinery, and/or resurfacing.

B-2