Appendix II. MAINTENANCE ALLOCATION

APPENDIX II

MAINTENANCE ALLOCATION

Section I. INTRODUCTION

1. General

i. Overhaul. To restore an item to completely

serviceable condition as prescribed by serviceability

This appendix contains explanations of all

standards developed. This is accomplished through

maintenance and repair functions authorized for the

employment of the technique of "Inspect and Repair

various levels. Section II contains the maintenance

Only as Necessary" (IROAN). Maximum utilization of

allocation chart.

diagnostic and test equipment is combined with

minimum disassembly of the item during the overhaul

2. Maintenance

process.

Maintenance is any action taken to keep materiel in

3. Explanation of Columns

a serviceable condition or to restore it to serviceability

when it is unserviceable. Maintenance of materiel

a. Functional Group. The functional group is a

includes the following:

numerical group set up on a functional basis. The

applicable functional grouping indexes (obtained from

a. Service. To clean, preserve, and replenish fuel

the Mobility Command Functional Grouping Indexes)

and lubricants.

are listed on the maintenance allocation chart in the

appropriate numerical sequence.

These indexes

b. Adjust.

To regulate periodically to prevent

normally are set up in accordance with their function and

malfunction.

proximity to each other. 15. Components and Related

Operation.

This column contains the functional

c. Inspect. To verify serviceability and detect

grouping index heading, subgroup headings, and a brief

incipient electrical or mechanical failure by scrutiny.

description of the part starting with the noun name. It

also designates the operations to be performed such as

d. Test. To verify serviceability and detect incipient

service, adjust, inspect, test, replace, repair, and

electrical or mechanical failure by use of special

overhaul.

equipment such as gages, meters, and the like.

c. Levels of Maintenance. This column contains the

e. Replace. To substitute serviceable assemblies,

various levels of maintenance by number designation.

subassemblies,

and

parts

for

unserviceable

An X placed in the appropriate level column and in line

components.

with an indicated maintenance function authorizes that

level to perform the function. The X indicates the lowest

f. Repair. To restore an item to serviceable

level responsible for performing the function, but does

condition through correction of a specific failure or

not necessarily indicate repair parts stockage at that

unserviceable condition. This function includes, but is

level. Higher levels are authorized to perform the

not limited to, inspecting, cleaning, preserving,

indicated functions of lower levels.

adjusting, replacing, welding, riveting, and straightening.

Remarks.

This column lists specific

g. Aline. To adjust two or more components of an

maintenance functions, special tools, cross-references,

electrical system so that their functions are properly

instructions, and the like pertinent to the operation being

synchronized.

performed.

h. Calibrate. To determine, check, or rectify the

graduation of an instrument, weapon, or weapons

system, or components of a weapons system.

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