TM 5-6350-275-24&P
i Repair. The application of maintenance services (inspect, test, service, adjust, align, calibrate, or replace),
including 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), removal/installation, and
disassembly/assembly procedures, and maintenance actions (welding, grinding, riveting, straightening, facing,
re-machining, and/or resurfacing) 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 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 (hours/miles, etc. ) considered in classifying Army equipment/components.
B-3 COLUMN ENTRIES. Columns used in the maintenance allocation chart, Section II are explained below:
a. Column 1, Group Numbers. Column 1 lists functional group code 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 names of components, assemblies, subassemblies,
and modules for which maintenance is authorized.
c. Column 3, Maintenance Functions. Column 3 lists the functions to be performed on the item listed in column
2.
d. Column 4, Maintenance Category. Column 4 specifies, by the listing of a work time figure in the appropriate
subcolumn(s), the category of maintenance authorized to perform the function listed in Column 3. This figure
represents the active time required to perform that maintenance function at the indicated category of
maintenance. If the number or complexity of the tasks within the listed maintenance function vary at different
maintenance categories, appropriate work time figures will be shown for each category. The work time figure
represents the average time required to restore an item (assembly, subassembly, component, module, end item,
or system) 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/quality control time in addition to the time required to perform the specific tasks identified for the
maintenance functions authorized in the maintenance allocation chart. The symbol designations for the various
maintenance categories are as follows:
C
Operator or Crew
O
Unit Maintenance
F
Direct Support Maintenance
H
General Support Maintenance
L
Specialized Repair Activity (SRA)
D
Depot Maintenance
e. Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individual tools)
and special tools, test, and support equipment required to perform the designated functions.
B-2
