APPENDIX C MAINTENANCE ALLOCATION CHART

TM 9-1375-213-12-3

TO 11A20-15-1

APPENDIX C

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

C-1. GENERAL

c. Service. Operations required periodi-

cally to keep an item in proper operating condi-

tion, i.e., to clean, to preserve, to drain, to

a. This section provides a general explana-

paint, or to replenish fuel, lubricants, chemical

tion of maintenance and repair functions author-

fluids, or gases.

ized at various maintenance categories.

d, Remove/Install. To remove and install

b . The Maintenance Allocation Chart

the same item when required to perform serv-

(MAC) in section II designates overall authority

ice or other maintenance functions, Install

and responsibility for the performance of main-

may be the act of emplacing, seating, or fixing

tenance functions on the identified end item or

into position a spare, repair part, or component

component, The application of the mainte-

or assembly, in a manner to allow the proper

nance functions to the end item or component

functioning of the end item.

will be consistent with the capacities and capa-

bilities of the designated

maintenance

e. Replace To remove an unserviceable

categories,

item and install a serviceable counterpart in its

place,

c. Section III lists the tools and test equip-

ment required for each maintenance function

f. Repair. The application of maintenance

as referenced in section II.

services 1 including troubleshooting2, removal/in-

stallation, and disassembly/assembly'; proce-

d . Section IV contains supplemental

dures, and maintenance actions4 to identify trou-

instructions and explanatory notes for a particu-

bles and restore serviceability to an item by

lar maintenance function.

correcting specific damage, fault, malfunction,

or failure in a part, subassembly, component,

C-2. MAINTENANCE FUNCTIONS

end item, or system,

Maintenance functions will be limited to and

C-3. EXPLANATION OF COLUMNS IN

defined as follows:

MAC, SECTION II

a . Inspect. To determine the serviceabil-

a. Column 1, Group Number, Column 1

ity of an item by comparing its physical, mechan-

lists functional group code numbers, the pur-

ical, and/or electrical characteristics with estab-

pose of which is to identify maintenance signifi-

lished standards through examination.

cant components, assemblies, subassemblies,

and modules with the next higher assembly.

b. Test. To verify serviceability by measur-

ing, pneumatic, hydraulic, or electrical charac-

teristics of an item and comparing those charac-

teristics with prescribed standards,

Services - inspect, test, service, adjust, aline, calibrate, and/or replace.

Troubleshooting - the process of investigating and detecting the cause of equipment malfunctioning;

the act of isolating a fault within a system or unit under test,

Disassemble/assemble - encompasses the step-by-step taking apart (or breakdown) of a spare/func-

tional group coded item to the level of its least componency identified as maintenance significant (i .e.,

assigned as SMR code) for the level of maintenance under consideration.

Actions - welding, grinding, riveting, straightening, facing, remachining, and/or resurfacing

C-1