MAINTENANCE ALLOCATION. CHART
Section I. INTRODUCTION
f. Test. Verify serviceability and detect incipient
electrical or mechanical failure by measuring the
mechanical or electrical characteristics of the item and
This appendix contains the explanations of all the
comparing those characteristics with authorized
maintenance and repair functions authorized the various
standards. Test will be made commensurate with test
procedures and with calibrated tools and/or test
allocation chart) designates overall responsibility for the
equipment referenced on the MAC.
performance of maintenance operations.
implementation of maintenance tasks upon the end item
g. Replace. Substitute serviceable components,
or component will be consistent with the assigned
assemblies, and subassemblies for unserviceable
counter parts or remove and install the same item when
required for the performance of other maintenance
2. Maintenance Operations
Maintenance is any section taken to keep material in a
h. Repair. Restore to a serviceable condition by
serviceable condition or to restore it to serviceability
replacing unserviceable parts or by any other action
when it is unserviceable. Maintenance of material
required using available tools, equipment, and skills to
includes the following:
include welding, grinding, riveting, straightening,
adjusting, and facing.
a. Service. Operations required periodically to keep
the item in proper operating condition, i.e., to clean,
i. Overhaul. Restore an end item to completely
preserve, drain, paint, and replenish fuel, lubricants,
serviceable condition as prescribed by serviceability
hydraulic, and deicing fluids or compressed air supplies.
standards developed and published by national
maintenance points having maintenance responsibility
Regulate periodically to prevent
for the item. This is accomplished through employment
malfunction. Adjustments will be made commensurate
of the technique of "Inspection and repair only as
with adjustment procedures and associated equipment
necessary" (IROAN). Maximum use combined with
minimum disassembly during overhaul, "overhaul" may
be assigned to any level of maintenance except
c. Aline. Adjust two or more components of an
organizational, provided the time, tools, equipment,
electrical or mechanical system so that their functions
repair parts authorization, and technical skills are
are properly synchronized or adjusted.
available at that level. Normally, overhaul as applied to
end items, is limited to depot maintenance level.
d. Calibrate. Determine, check, or rectify the
graduation of an instrument, weapon, or weapons
j. Rebuild. Restore to a condition comparable to
system or components of a weapons system.
new, by disassembling to determine the condition of
each component part and reassembly using serviceable,
Verify serviceability and detect
rebuilt, or new assemblies, subassemblies, and parts.
incipient electrical or mechanical failure by close visual