TM-9-2540-207-14-P
HEATER, VEHICULAR COMPARTMENT, MODEL: A20
TECHNICAL MANUAL; OPERATOR, FIELD, AND SUSTAINMENT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2007
TM-9-2540-207-14-P - Page 209 of 288
TM 9-2540-207-14&P
B-3.
EXPLANATION OF COLUMNS IN THE MAC (see SECTION II)
Column 1,
Group Number.
Column 1 lists functions group code numbers, the purpose
of which is to identify maintenance of significant components, assemblies,
subassemblies, and modules with the next higher assembly. End item group number
shall be "00".
Column 2.
Components/Assembly
.
Column 2 contains the names of components,
assemblies, subassemblies, and modules for which maintenance is authorized and its
“useable on” code.
Uncoded items are applicable to all models. Identification of the
“useable on” codes used in this publication are:
None at this time.
Column 3, Maintenance Function
.
Column 3 lists the functions to be performed on the
item listed in Column 2. (See paragraph B-2 for a detailed explanation of these
functions.)
Column 4,
Maintenance Category
. Column 4 specifies, by the listing of a work time
figure in the appropriate sub-column (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.
Appropriate work time figures will be shown for each category.
The working figure
represents the average time required to restore an item (assembly, subassembly,
components, 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, 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 MAC.
The symbol designations for the various
maintenance categories are as follows:
C -
Operator or Crew
O -
Organization
F -
Direct Support
H -
General Support
D -
Deport
Column 5, Tools and Equipment.
Column 5 specifies, by code, those common tool
sets (not individual tools) and special tools, TMDE, and support equipment required to
perform the designated function.
Column 6, Remarks
.
This column shall, when applicable, contain a letter code, in
alphabetical order, that shall be keyed to the remarks contained in Section IV.
B-3
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