TM 5-6350-262-14/7/NAVELEX 0967-466-0970/TO 31S9-4-28-1
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
D. Adjust. To maintain within prescribed limits by
bringing into proper or exact position or by setting the
a. This section provides a general explanation of all
operating characteristics to specified parameters.
maintenance and repair functions authorized at various
E. Align. To adjust specified variable element of an
item to bring about optimum or desired performance.
b. Section II designates overall responsibility for the
F. Calibrate. To determine and cause corrections
performance of maintenance functions on the identified
to be made or to be adjusted on instruments or test
end item or component and the work measurement time
measuring and diagnostic equipment used in precision
required to perform the functions by the designated
Consists of comparisons of two
The implementation of the
instruments, one of which is a certified standard of
maintenance functions upon the end item or component
known accuracy, to detect and adjust any discrepancy in
will be consistent with the assigned maintenance
the accuracy of the instrument being compared.
G. Install. The act of emplacing, seating, or fixing
B-2. EXPLANATION OF COLUMNS IN SECTION II.
into position an item, part, or module (component or
a. Column 1.
A number is
assembly) in a manner to allow the proper functioning of
assigned to each group in sequence. The applicable
an equipment or system.
groups are listed on the MAC in disassembly sequence
H. Replace. The act of substituting a serviceable
beginning with the first group removed.
like type part, subassembly, or module (component or
b. Column 2. Functional Group. This column
assembly) for an unserviceable counterpart.
contains a brief description of the components of each
I. Repair. The application of maintenance services
(inspect, test, service, adjust, align, calibrate, or replace)
c. Column 3. Maintenance Functions. This column
or other maintenance actions (welding,
lists the various maintenance functions (A through K}
The lowest maintenance level authorized to perform
resurfacing) to restore serviceability to an item by
these functions is indicated by a symbol in the
correcting specific damage, fault, malfunction, or failure
appropriate column. Work measurement time standards
in a part, subassembly, modure (component or
(the active repair time to perform the maintenance
assembly), end item, or system.
function) are shown directly below the symbol identifying
the maintenance level. The symbol designations for the
(service/action) necessary to restore an item to a
various maintenance levels are as follows:
C. Operator or crew
prescribed by maintenance standards (i.e., DMWR) in
O. Organizational maintenance.
appropriate technical publication. Overhaul is normally
F. Direct support maintenance.
the highest degree of maintenance performed by the
H. General support maintenance.
Army. Overhaul does not normally return an item to like
D. Depot maintenance.
The maintenance functions are defined as follows:
K. Rebuild. Consists of those services/actions
A. Inspect. To determine serviceability of an item by
necessary for the restoration
comparing its physical, mechanical, and electrical
equipment to a like new condition in accordance with
characteristics with established standards through
original manufacturing standards. Rebuild is the highest
degree of materiel maintenance applied to Army
B. Test. To verify serviceability and detect probable
equipment. The rebuild operation includes the
failure by measuring the mechanical or electrical
characteristics of an item and comparing those
characteristics with prescribed standards.
C. Service. Operations required periodically to keep
an item in proper operating condition, i.e., to clean, to
preserve, to drain, to paint, or to replenish fuel,
lubricants, hydraulic fluids, or compressed air supplies.