APPENDIX B. MAINTENANCE ALLOCATION CHART

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APPENDIX B

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

A--INSPECT To determine serviceability of an item

1. General

by comparing its physical, mechanical, and elec-

a. This section provides a general expla-

trical characteristics with established standards.

nation of all maintenance and repair functions

B--TEST To verify serviceability and to detect elec-

authorized at various maintenance levels.

trical or mechanical failure by use of test equip-

b. Section II designates overall responsibili-

ment.

t y for the performance of maintenance

C--SERVICE To clean, to preserve, to charge, to

functions on the identified end item or com-

paint, and to add fuel, lubricants, cooling agents,

and air.

ponent. The implementation of the maintenance

functions upon the end item or component

D--ADJUST To rectify to the extent necessary to

bring into proper operating rangr.

will be consistent with the assigned mainte-

nance functions.

E--ALINE To adjust specified variable elements of

and item to bring to optimum performance.

F--CALIBRATE To determine the corrections to be

2. Explanation of Columns in Section II

m a d e in the readings of instruments or test

a. Functional Group Number, Column 1.

equipment used in precise measurement. Con-

The functional group is a numerical group

s i s t s of the comparisons of two instruments,

set up on a functional basis. The applicable

one of which is a certified standard of known

accuracy, to detect and adjust any discrepancy in

functional grouping indexes (obtained from

the accuracy of the instrument being compared

TB 750931, Functional Grouping Codes) are

with the certified standard.

listed on the MAC in the appropriate numerical

G--INSTALL To set up for use in an o p e r a t i o n a l

sequence. These indexes are normally set up

environment such as an emplacement, site, or

in accordance with their function and prox-

vechicle.

imity to each other.

H--REPLACE To replace unserviceable items with

Nomenclature,

b. Component

Assembly

serviceable assemblies, subassemblies, or park.

Column 2. This column contains a brief de-

I--REPAIR To restore an item to serviceable condi-

scription of the components of each functional

tion. This includes, but is not limited to, in-

group.

s p e c t i o n , cleaning, preserving, adjusting, re-

c. Maintenance Functions, Column 3. This

placing, welding, riveting, and strengthening.

column lists the various maintenance functions

J--OVERHAUL To restore an item to a completely

serviceable condition as prescribed by mainte-

(A through K) and indicates the lowest main-

nance serviceability standards using the Inspect

tenance category authorized to perform these

and Repair Only as Necessary (IROAN)

functions. The symbol designations for the

technique.

various maintenance categories are as follows:

K--REBUILD To restore an item to a standard as

nearly as possible to original or new condition

C -- Operator or crew

in a p p e a r a n c e , performance, and life expec-

O -- Organizational maintenance

tancy. This is accomplished through complete

F -- Direct support maintenance

disassembly of the item, inspection of all parts

H -- General support maintenance

or components, repair or replacement of worn

D -- Depot maintenance

or unserviceable elements (items) using original

The maintenance functions are defined as

manufacturing tolerances and specifications, and

follows:

subsequent reassembly of the item.

B-1