MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
serviceability, to-an item by correcting specific damage,
fault, malfunction, or failure in a part, subassembly,
module (component or assembly), end item, or system.
The maintenance allocation chart (sec 11) lists the
authorized maintenance functions assigned the
a. Column 1, Group Number. Column lists group
maintenance categories for maintenance of the M5
numbers, the purpose of which is to identify components,
helicopter-or vehicle-mounted riot
assemblies, subassemblies, and modules with the next
disperser. This chart is to be used by all levels of
maintenance to insure complete support of the
b. Column 2, Component/Assembly. Column 2
contains the noun names of components, assemblies,
subassemblies, and modules for which the maintenance
Maintenance functions will be limited to and defined as
c. Column 3, Maintenance Functions. Column 3
lists the functions to be performed on the item listed in
a. Inspect. To determine the serviceability of an
item by comparing its physical, mechanical and/or
d. Column 4, Maintenance Category. Column 4
electrical characteristics with standards through
specifies by the listing of a "worktime" (WT) figure in the
appropriate subcolumn(s), the lowest level of
b. Test. To verify serviceability and detect incipient
maintenance authorized to perform the function listed in
failure by measuring the mechanical or electrical
Column 3. This figure represents the active time required
characteristics of an item and comparing those
to perform that maintenance function at the indicated
characteristics with prescribed standards.
category of maintenance. If the number or complexity of
c. Service. Operations required periodically to keep
the tasks within the listed maintenance function vary at
an item in proper operating condition, i.e., to clean
different maintenance categories, appropriate "worktime"
(decontaminate), to preserve, to drain, to paint, or to
figures will be shown for each category. The number of
replenish fuel, lubricants, hydraulic fluids, or compressed
man-hours specified by the "worktime" figure represents
the average time required to restore an item (assembly,
d. Adjust. To maintain within prescribed limits, by
subassembly, component, module, end item or system)
bringing into proper or exact position, or by setting the
to a serviceable condition under typical field operating
operating characteristics to specified parameters.
conditions. This time includes preparation time,
e. Calibrate. To determine and cause corrections to
troubleshooting time, and quality assurance/quality
be made or to be adjusted on instruments or test
control time in addition to the time required to perform
measuring and diagnostic equipment used in precision
the specific tasks identified for the maintenance
measurement. Consists of comparisons of two
functions authorized in the maintenance allocation chart.
instruments, one of which is A certified standard of
This time will be expressed in man-hours (MH) and
known accuracy, to detect and adjust by discrepancy in
carried to one decimal place (tenths of hours).
the accuracy of the instrument being compared.
e. Column 5, Tools and Equipment. Column 5
f. Replace. The act of substituting a serviceable
specifies by code, those common tool sets and special
like type part, subassembly or module (component or
tools, tests and support equipment required to perform
assembly) for an unserviceable counterpart.
the designated function.
g. Repair. The application of maintenance services.