TM 9-6230-210-13&P
B.1
GENERAL
APPENDIX B
MAINTENANCE ALLOCATION CHART
SECTION I. INTRODUCTION
a. This section provides a general explanation of all maintenance and repair functions authorized at various mainte-
nance levels under the standard Army Maintenance System concept.
b. The Maintenance Allocation Chart (MAC) in Section II designates overall authority and responsibility for the
performance of maintenance functions on the identified end item or component. The application of the maintenance
functions to the end item or component will be constant with the capacities and capabilities of the designated mainte-
nance categories.
c. Section III lists the tools and test equipment (both special tools and common tools sets) required for each
maintenance function as referenced from Section II.
d. Section IV contains supplemental instructions and explanatory notes for a particular maintenance function.
B.2 MAINTENANCE FUNCTIONS
Maintenance functions will be limited to and defined as follows:
a. Inspect. TO determine the serviceability of an item by comparing its physical, mechanical, and/or electrical
characteristics with established standards through examination (e.g., by sight, sound, or feel).
b. Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, 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 dean (includes
decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids, or gases.
d. 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 an equipment or system.
e. Replace. TO remove an unserviceable item and install a serviceable counterpart in its place. “Replace” is autho-
rized by the MAC and is shown as the 3rd position code of the SMR code.
f. Repair. The application of maintenance services including fault location/troubleshooting, removal/installation,
and disassembly/assembly procedures, 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.
g. Overhaul. That maintenance effort (service/action) prescribed to restore an item to a completely servicealbe/op-
erational condition as required by maintenance standards in appropriate technical publications (i.e., DMWR). Overhaul
in normally the highest degree of maintenance perfomed by the Army. Overhaul does not normally return an item to
like new condition.
h. Rebuild. Consists of those service/actions necessary for the restoration of unserviceable equipment to a like-new
condition in accordance with original manufacturing standards. Rebuild is the highest degree of material maintenance
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