Appendix C. MAINTENANCE ALLOCATION CHART

TM 3-6665-225-12

APPENDIX C

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

C1. General

C-3. Column entries

Entries for these columns are explained below:

The maintenance allocation chart, section II, lists

a. Column 1, Group Number. Column 1 lists

the authorized maintenance functions assigned

group numbers, the purpose of which is to

the maintenance categories for maintenance of the

identify components, assemblies, subassemblies,

M8 and M10 through M18 alarm systems. This

and modules with the next higher assembly.

chart is to be used by all levels of maintenance to

b. Column 2, Component/Assembly. Column 2

insure complete support of the equipment.

contains the noun names of components, assem-

C2. Maintenance functions.

blies, subassemblies, and modules for which

maintenance is authorized.

Maintenance functions are limited to and defined

c. Column 3, Maintenance Functions. Column

as follows:

3 lists the functions to be performed on the item

a. Inspect. To determine the serviceability of

listed in Column 2.

an item by comparing its physical, mechanical, or

d. Column 4. Maintenance Category. Column 4

electrical characteristics with established stand-

specifies, by the listing of a "work time" (WT)

ards through examination.

figure in the appropriate subcolumns, the lowest

b. Test. To verify serviceability and detect

level of maintenance authorized to perform the

incipient failure by measuring the mechanical or

function listed in Column 3. This figure represents

electrical characteristics of an item and comparing

the active time required to perform that mainte-

those characteristics with prescribed standards.

nance function at the indicated category of main-

c. Service. Operations required periodically to

tenance. If the number or complexity of the tasks

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

within the listed maintenance function vary at

clean, to paint, and replace M229 Refill Kit

components in the M43 Detector Kit.

different maintenance categories, appropriate

"work time" figures are shown for each category.

d. Adjust. To maintain, within prescribed

The number of man-hours specified by "work

limits, by bringing into proper or exact position,

time" figure represents the average time required

or by setting the operating characteristics to

to restore an item to a serviceable condition under

specified parameters.

typical field operating conditions. This time in-

e. Install. The act of emplacing, seating, or

fixing into position an item, part, or module in a

cludes preparation time, troubleshooting time,

manner to allow the proper functioning of an

and quality assurance/quality control time in

addition to the time required to perform the

equipment or system.

specific tasks identified for the maintenance func-

f. Replace. The act of substituting a service-

able like type assembly, or module for an unserv-

tions authorized in the maintenance allocation

chart. This time is expressed in man-hours and

iceable counterpart.

carried to one decimal place (tenths of hours).

g. Repair. The application of maintenance

e. Column 5. Tools and Equipment. Column 5

services or other maintenance actions to restore

specifies by code, those common tool sets and

serviceability to an item by correcting specific

special tools, test, and support equipment re-

damage, fault, malfunction, or failure in a part,

quired to perform the designated function.

subassembly, module end item, or system.

h. Overhaul. T h a t m a i n t e n a n c e e f f o r t

C-4. Tool and Test Equipment Requirements

necessary to restore an item to a completely serv-

List -- Section Ill

iceable or operational condition as prescribed by

This list identifies all tools and test equipment re-

maintenance standards in appropriate technical

quired for maintenance and repair of the M8 and

publications. Overhaul is normally the highest

M10 through M18 Alarm Systems as specified in

degree of maintenance performed by the Army.

the maintenance allocation chart. The list gives

Overhaul does not normally return an item to like

tool or test equipment reference codes, user main-

new condition.