TM-3-1040-268-20-P
LAUNCHER, GRENADE, SMOKE: SCREENING, RP, M250
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
MAY 1982
TM-3-1040-268-20-P - Page 46 of 72
TM 3-1040-268-20&P
APPENDIX B
MAINTENANCE ALLOCATION CHAR T
Section I. INTRODUCTION
B-1. GENERAL.
a. This section provides a general explanation of all maintenance and repair
functions authorized at various maintenance categories.
b. The Maintenance Allocation Chart (MAC) in section II designates overall
responsibility for the performance of maintenance functions on the identified
end item or component. The implementation of the maintenance functions upon
the end item or component will be consistent with the assigned maintenance
functions.
c. Section Ill lists the special tools and test equipment required for each
maintenance function as referenced from section II.
B-2. MAINTENANCE FUNCTIONS.
Maintenance functions will be limited to
and defined as follows:
a.
Inspect.
To determine the serviceability of an item by comparing its
physical, mechanical, and/or electrical characteristics with established stan-
dards through examination.
b.
Test.
To verify serviceability by measuring the mechanical or electrical
characteristics of an item and comparing those characteristics with prescribed
standards.
c.
Replace.
The act of substituting a serviceable like type part, subassem-
bly, or module (component or assembly) for an unserviceable counterpart.
d.
Repair.
The application of maintenance services or other maintenance
actions to restore serviceability to an item by correcting specific damage, fault,
malfunction, or failure in a part, subassembly, module (component or assem-
bly), end item, or system.
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION Il.
a.
Column 7, Group Number.
Column 1 lists functional group code num-
bers, the purpose of which is to identify components, assemblies, subas-
semblies, 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 Function.
Column 3 lists the functions to be
performed on the item listed in column 2. (For detailed explanation of these
functions, see para B-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 maintenance function at the indicated category of
maintenance. If the number or complexity of the tasks within the listed mainte-
nance 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, troubleshooting 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:
O . . . . . . . . . . . . . . . . . . . . . . . . .
. Organizational maintenance.
e.
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.
f.
Column 6, Remarks.
This column shall, when applicable, contain a letter
code, in alphabetical order, which shall be keyed to the remarks contained in
section IV.
B-0
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