MAINTENANCE ALLOCATION CHART
a. Section I provides a general explanation of all
maintenance and repair functions authorized at
various maintenance levels.
b. Section II designates overall responsibility for
the perform ante of maintenance operations on the
identified end item or component.
plementation of the maintenance tasks upon the
end item or component will be consistent with the
assigned maintenance operations.
c. Section 111 lists the special tools and test
for each maintenance
operation as referenced from Section II.
d. Section IV contains supplemental instructions,
explanatory notes and / or illustrations required for
a particular maintenance function.
B-2. Explanation of Columns in Section II
a. Functional Group Number. The functional
group is numerical group set up on a functional
basis. The applicable functional grouping indexes
(obtained from TB 750-93-1 Functional Grouping
Codes ) are listed on the MAC in the appropriate
numerical sequence. These indexes are normally set
up in accordance with their function and proximity
to each other.
b. Component Assembly Nomenclature. This
column contains a brief description of the com-
ponents of each functional group.
c. Maintenance Operations and Maintenance
Levels. This column lists the various maintenance
operations (*A through K) and indicates the
lowest maintenance level authorized to perform
these operations. The symbol designations for the
various maintenance levels are as follows:
C-Operator and / or crew
FDirect support maintenance (DS)
H-General support maintenance (GS)
The Maintenance Operations are defined as
C-SERVICIE Operations requiring periodically to keep
the item in proper operating condition, i.e., to clean,
preserve, drain, paint, and replenish fuel, refrigerant
lubricants. hydraulic, and deicing fluids, or compressed
DADJUST: Regulate periodically to prevent malfunc-
tion. Adjustments will be made commensurate with
and associated equipment
EALINE: Adjust two or more components of an elec-
trical or mechanical system so that their functions are
properly synchronized or adjusted,
graduation of an instrument, weapon. or weapons
system or componentds of a weapons system.
AINDPECTION: VerifY serviceability and detect incipient
mechanical failure by close visual
and detect incipient
electrical or mechanical failure by measuring the
mechanical or electrical characteristics of the item and
standards. Detect leaks in the refrigerant system with
the aid of a leak detector. Tests will be made com-
mensurate with test procedures and with calibrated
tools and /(w test equipment reference in the MAC.
HREPLACE : Substitute serviceable components.
assemblies and subassemblies for unserviceable counter
parts or remote and install the same item w h e n
required for the performance of other maintenance
GINSTALL: To set up for use in an operational en-
vironment such as an emplacement. site. or vehicle.
Restore to a serviceable condition by
replacing unserviceable parts or by any other action
required using available tools. equipment and skillsto
grinding. riveting, straightening.
adjusting and facing.
JOVERHAUL: Restore an item to a completed ser-
viceable condition as prescribed by serviceability
standards developed and published by the commodity
cornmands) employing techniques of inspect and
Repair Only as Necessary. (IROAN). Maximum use of
diagnostic and test equipment is combined w i th
minimum disassembly during overhaul. Overhaul
may be assigned to any level of maintenance except
organizational. provided the time, tools. equipment,
repair parts authorization, and technical skills are
available at that level. Normally, overhaul as applied to
end items. is limited to depot maintenance level.
KREBUlLD: Restore to a condition comparable to new
by disassembling to determine the condition of each
component part and reassembling using serviceable,
rebuilt. or new assemblies, subassemblies and parts.
d. Too/s and Equipment. This column is
provided for referencing the SPECIAL TOOL
AND TEST EQUIPMENT REQUIREMENTS
(sec. 111) and REMARKS (sec. IV) that may be
associated with maintenance operation (sec. II).
e. Remarks. This column
is provided for
referencing by codes the remarks (see IV) pertinent
to the maintenance functions.