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TM 11-6625-2611-12

APPENDIX D

MAINTENANCE ALLOCATION

Section I. INTRODUCTION

D-1. General

This appendix provides a summary of the maintenance

operations for the AN/APM-305A. It authorizes

categories of maintenance for specific maintenance

functions on repairable items and components and the

tools and equipment required to perform each function.

This appendix may be used as an aid in planning main-

tenance operations.

D-2. Maintenance Function

Maintenance functions will be limited to and defined

as follows:

a. Inspect To determine the serviceability of an

item by comparing its physical, mechanical, and/or

electrical characteristics with established standards

through examination.

b. Test To verify serviceability and to detect incip-

ient failure by measuring the mechanical or electrical

characteristics of an item and comparing those charac-

teristics with prescribed standards.

c. Service. Operations required periodically to keep

an item in proper operating condition, i.e., to clean (de-

contaminate), to preserve, to drain, to paint, or to

replenish fuel, lubricants, hydraulic fluids, or com-

pressed air supplies.

d. Adjust. To maintain, within prescribed limits, by

bringing into proper or exact position, or by setting the

operating characteristics to the specified parameters.

e. Align To adjust specified variable elements of an

item to bring about optimum or desired performance.

f. Calibrate. To determine and cause corrections to

be made or to be adjusted on instruments or test

measuring and diagnostic equipments used in precision

measurement. Consists of comparisons of two instru-

ments, one of which is a certified standard of known

accuracy, to detect and adjust any discrepancy in the

accuracy of the instrument being compared.

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

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

sembly) in a manner to allow the proper functioning of

the equipment or system.

h Replace. The act of substituting a serviceable like

type part, subassembly, or module (component or as-

sembly) for an unserviceable counterpart.

i Repair. The application of maintenance services

(inspect, test, service, adjust, align, calibrate, replace)

or other maintenance actions (welding, grinding, rivet-

ing, straightening, facing, remachining, or resurfac-

ing) to restore serviceability to an item by correcting

specific damage, fault, malfunction, or failure in a

part, subassembly, module (component or assembly),

end item, or system.

j. Overhaul. That maintenance effort (ser-

vice/action) necessary to restore an item to a com-

pletely serviceable/operational condition as prescribed

by maintenance standards (i.e., DMWR) in appropriate

technical publications. Overhaul is normally the high-

est degree of maintenance performed by the Army.

Overhaul does not normally return an item to like new

condition.

k. Rebuild. Consists of those services/actions neces-

sary for the restoration of unserviceable equipment to

a like new condition in accordance with original

manufacturing standards. Rebuild is the highest

degree of materiel maintenance applied to Army

equipment. The rebuild operation includes the act of

returning to zero those age measurements (hours,

miles, etc.) considered in classifying Army equip-

ments/components.

D-3. Column Entries

a Column 1, Group Number. Column 1 lists group

numbers, the purpose of which is to identify compo-

nents, assemblies, subassemblies, and modules with the

next higher assembly.

b. Column 2, Component/Assembly. Column 2 con-

tains the noun names of components, assemblies, sub-

assemblies, and modules for which maintenance is

authorized.

c. Column 3, Maintenance Functions. Column 3 lists

the functions to be performed on the item listed in col-

umn 2. When items are listed without maintenance

functions, it is solely for purpose of having the group

numbers in the MAC and RPSTL coincide.

d. Column 4, Maintenance Category Column 4

specifies, by the listing of a‘’ work time” figure in the

appropriate subcolumn(s), the lowest level of mainte-

nance authorized to perform the function listed in col-

umn 3. This figure represents the active time required

to perform that maintenance function at the indicated

category of maintenance. If the number or complexity

of the tasks within the listed maintenance function

vary at different maintenance categories, appropriate

“work time” figures will be shown for each category.

The number of task-hours specified by the” work time”

figure represents the average time required to restore

an item (assembly, subassembly, component, module,

end item or system) to a serviceable condition under

typical field operating conditions. This time includes

preparation time, troubleshooting time, and quality

assurance/quality control time in addition to the time

required to perform the specific tasks identified for the

maintenance functions authorized in the maintenance

D-1

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