| Tweet |
Custom Search
|
|
|
||
 TM 5-1940-277-20
TM 1940-20/2
MAINTENANCE FUNCTIONS (Contd)
9.
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.
10.
Overhaul. The 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 does not normally return an item to like-new condition.
11.
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 (e.g., hours/miles) considered in classifying Army
equipment/components.
EXPLANATION OF COLUMNS IN THE MAC
Column 1 Group Number. Column (1) lists Functional Group Code (FGC) numbers. The purpose of
FGC numbers is to identify maintenance significant components, subassemblies, and modules
with the Next Higher Assembly (NHA).
Column 2 Component/Assembly. Column (2) contains the item names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
Column 3 Maintenance Function. Column (3) lists the functions to be performed on the item listed in
column (2). For a detailed explanation of these functions refer to Maintenance Functions
outlined above.
Column 4 Maintenance Level. Column (4) specifies each level of maintenance authorized to perform
each function listed in column (3), by indicating work-time required (expressed as man-hours
in whole hours or decimals) in the appropriate sub column. This work-time figure represents
the active time required to perform that maintenance function at the indicated level of
maintenance. If the number or complexity of the tasks within the listed maintenance function
varies at different maintenance levels, appropriate work time figures are be shown for each
level. The work time figure represents the average time required to restore an item to a
serviceable condition under typical field operating conditions. This time includes preparation
time, including any necessary disassembly/assembly time, troubleshooting/fault location time,
and quality assurance time in addition to the time required to perform the specific tasks
identified for the maintenance functions authorized in the MAC.
Field:
Sustainment:
C Operator or crew maintenance
H General support maintenance
O Unit maintenance
D Depot maintenance
F Direct support maintenance
NOTE
The "L" maintenance level is not included in Column 4 of
the MAC. functions to this level of maintenance are
identified by a work time figure in the "H" column of
Column 4, and an associated reference code is used in the
REMARKS column 6. this code is keyed to the remarks
and the SRA complete repair application is explained
there.
Column 5 Tools and Equipment Reference Code. Column (5) specifies, by code, common tool sets
Change 2
B-3
|
||
|
||
