TM 3-4230-218-12&P
B-2.
MAINTENANCE FUNCTIONS - Continued.
f.
Calibrate.
To determine and cause corrections to be made or to be
adjusted to Instruments or test, measuring, and diagnostic equipments used in
precision measurement.
Consists of comparisons of two instruments, one of
which is a certified standard of known accuracy, to detect and adjust any
discrepancy in the accuracy of the instrument being compared.
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 equip-
ment 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 3rd position code of the SMR code.
i.
Repair.
The application of maintenance services,
including fault
location/troubleshooting, removal/installation, and disassembly/assembly proce-
dures, 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.
B-3.
EXPLANATION OF COLUMNS IN THE MAC - SECTION II.
a.
Column 1, Group Number.
Column 1 lists functional group code
numbers,
the purpose of which is to identify maintenance significant compo-
nents, assemblies, subassemblies, and modules with the next higher assembly.
End item group numbers shall be “00”.
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.
performed on the item listed in Column 2.
functions, see paragraph B-2.)
d.
Column 4. Maintenance Category.
Column 3 lists the functions to be
(For a detailed explanation of these
Column 4 specifies, by the listing
of a work time figure in the appropriate subcolumn(s), the category of mainte-
nance authorized to perform the function that maintenance function at the
indicated category of maintenance.
If the number or complexity of task within
a listed maintenance function vary at different maintenance categories, appro-
priate 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 condi-
tion 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 desig-
nations for the various maintenance categories are as follows:
B-2
