Appendix D: MAINTENANCE ALLOCATION CHART

TM 32-5895-227-14&P

APPENDIX D

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

Overhaul.

That maintenance effort

D-1

GENERAL.

(services/actions) necessary to restore an item to a

a. This section provides a general explanation of

completely serviceable/ operational condition as

all maintenance and repair functions authorized at various

prescribed by maintenance standards; i.e., Depot

maintenance levels.

Maintenance Work Requirement in appropriate technical

b. The Maintenance Allocation Chart (MAC) in

publications. Overhaul is normally the highest degree of

Section II designates overall responsibility for the

maintenance performed by the Army. Overhaul does not

performance of maintenance functions on the identified

normally return an item to like new condition.

end item or component. The implementation of the

maintenance functions upon the end item or component

D-3 EXPLANATION OF COLUMNS IN THE MAC,

will be consistent with the assigned maintenance

SECTION II.

functions.

c. Section III lists the special tools and test

a. Column 1, Group Number. Column 1 lists group

equipment required for each maintenance function as

numbers, the purpose of which is to identify components,

referenced from Section II.

assemblies, subassemblies, and modules with the next

d. Section IV contains supplemental instructions

higher assembly.

b. Column 2, Component/Assembly. Column 2

and explanatory notes for a particular maintenance

function.

contains the names of components, assemblies,

subassemblies, and modules for which maintenance is

authorized.

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MAINTENANCE FUNCTIONS.

c. Column 3, Maintenance Function. Column 3

a. Inspect. To determine the serviceability of an

lists the functions to be performed on the item listed in

item by comparing its physical, mechanical and/or

column 2. (For detailed explanation of these functions,

electrical characteristics with established standards

see para. D-2.)

through examination.

d. Column 4, Maintenance Level. Column 4

Test.

To verify serviceability and detect

specifies, by the listing of a "work time" figure in the

incipient failure by measuring the mechanical or electrical

appropriate subcolumn(s), the lowest level of

characteristics of an item and comparing those

maintenance authorized to perform the function listed in

characteristics with prescribed standards.

column 3. This figure represents the active time required

c. Service. Operations required periodically to

to perform the maintenance function at the indicated level

keep an item in proper operating condition; i.e., to clean

of maintenance. If the number or complexity of the tasks

(decontaminate), to preserve, to drain, to paint, or to

within the listed maintenance function vary at different

replenish fuel, lubricants, hydraulic fluids, or compressed

maintenance levels, appropriate "work time" figures will

air supplies.

be shown for each level. The number of man-hours

d. Install. The act of emplacing, seating, or fixing

specified by the "work time" figure represents the average

into position an item, part, or module (component or

time required to restore an item (assembly, subassembly,

assembly) in a manner to allow the proper functioning of

component, module, end item, or system) to a

an equipment or system.

serviceable condition under typical field operating

e. Replace. The act of substituting a serviceable

conditions.

This time includes preparation time,

like type part, subassembly, or module for an

troubleshooting time, and quality assurance/quality control

unserviceable

time in addition to the time required to perform the

counterpart.

specific tasks identified for the maintenance functions

f: Repair. The application of maintenance services

authorized in the MAC. The symbol designations for the

or other maintenance actions to restore serviceability to

various maintenance levels are as follows:

an item by correcting specific damage, fault, malfunction,

or failure in a part, subassembly, module (component or

C .......................................................Operator or crew

assembly), end item, or system.

O ..................................... Organizational maintenance

F....................................... Direct support maintenance

H ................................... General support maintenance

D .................................................. Depot maintenance

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