MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
C Service, Operations required periodically to keep an item in proper
a. This section provides a general explanation of all
operating conditions, i.e., to clean, to preserve, to
maintenance and repair functions authorized at various
drain, to paint, or to replenish fuel, lubricants, hy-
draulic fluids, or compressed air supplies.
D Adjust To maintain within prescribed limits, by bringing into proper
or exact position, or by setting the operating
performance of maintenance functions on the identified
characteristics to specified parameters.'
end item or component and the work measurement time
E Aline, To adjust specified variable elements of an item to bring
required to perform the functions by the designated
about optimum or desired performance.
F Calibrate, To determine and cause corrections to be made or to be
maintenance level. The implementation of the mainte-
adjusted on instruments or test measuring and diag-
nance functions upon the end item qr component will be
nostic equipments used in precision measurement.
consistent with the assigned maintenance functions.
Con- sists of comparisons of two instruments, one of
c. Section III-Special Tools and Test Equipment
which is a certified standard of known accuracy, to
Required for Each Maintenance Function Referenced
detect and adjust any discrepancy in the accuracy of
the instru- ment being compaired.
From Section II (Not Applicable).
G Install: The act of emplacing, seating, or fixing into position an
d. Section IV contains supplemental instructions or
item, part, or module (component or assembly) in a
explanatory notes for a particular maintenance function.
manner to allow the proper functioning of an equip-
ment or system.
H Replace, The act of substituting a serviceable like type part,
B-2. Explanation of Columns In Section II
subassembly, or module (component or assembly)
a. Column (1), Group Number. A number is
for an unserviceable counterpart.
assigned to each group in a top down breakdown
I Repair: The application of maintenance services (inspect, test,
sequence. The applicable groups are listed on the MAC
service, adjust, aling, calibrate, or replace) or other
maintenance actions (welding, grinding, riveting,
in disassembly sequence beginning with the first group
straightening, facing, remachining, or resurfacing) to
restore serviceability to an item by correcting specific
b. Column (2), Assembly Group. This column
damage, fault, malfunction, or failure in a part,
contains a brief description of the components of each
subas- sembly, module (component or assembly),
end item, or system.
J Overhaul: That maintenance effort (service/action) necessary to
c. Column (3), Maintenance Functions. This column
restore an item to a completely serviceable
lists the various maintenance functions (A through K).
/operational condition as prescribed by maintenance
the lowest maintenance level authorized to perform
standards (i.e., DMWR) in appropriate technical
these functions is indicated by a symbol in the
publi- cation. Overhaul is normally the highest
degree of maintenance performed by the Army.
appropriate column. Work measurement time standards
Overhaul does not normally return an item to like new
(the active repair time required to perform the
maintenance function) are shown directly below the
K Rebuild: Consists of those services/actions necessary for the
symbol identify- ing the maintenance level. The symbol
restoration of unserviceable equipment to a like new
condition in accordance with original manufacturing
designations for the various maintenance levels are as
standards. Rebuild is the highest degree of material
maintenance applied to Army equipment.
rebuild operation includes the act of returning to zero
Operator or crew.
those age measurements (hours/miles, etc.)
Direct support maintenance.
General support maintenance.
d. Column (4). Tools and Equipment. This column
The maintenance functions are defined as follows:
is provided for referencing by code the special tools and
Inspect, To determine service ablility of an item by comparing
test equipment (sec.
III) required to perform the
maintenance functions (sec. II).
characteristics with established standards through
e. Column (5), Remarks. This column is provided
for referencing by code the remarks (sec. IV) pertinent
Test, To verify serviceability and detect incipient failure by
to the maintenance functions.
characteristics of an item and comparing those
characteristics with prescribed standards.