Section I. INTRODUCTION - TM-5-4120-298-23P0009

TM 5-4120-298-23P

Section I. INTRODUCTION

(2) Item Number. The number used to iden-

This manual lists spares and repair

1. Scope.

tify item called out in the illustration.

parts; special tools; special test, measurement, and

diagnostic equipment (TMDE), and other special

b. Source, Maintenance, and Recoverability

support equipment required for performance of or-

(SMR) Codes.

ganizational, direct support, and general support

maintenance of the Air Conditioner. It authorizes

(1) Source Code. Source codes indicate the

the requisitioning and issue of spares and repair

manner of acquiring support items for mainte-

parts as indicated by the source and maintenance

nance, repair, or overhaul of end items. Source codes

codes.

are entered in the first and second positions of the

Uniform SMR Code format as follows:

Definition

Code

2. General. This Repair Parts and Special Tools

List is divided into the following sections:

Item procured and stocked for antici-

pated or known usage.

a. Section II. Repair Parts List. A list

of spares and repair parts authorized for use in the

Item procured and stocked for insur-

performance of maintenance. The list also includes

ance purposes because essentiality dic-

parts which must be removed for replacement of the

tates that a minimum quantity be

authorized parts. Parts lists are composed of func-

available in the supply system.

tional groups in numeric sequence, with the parts in

each group listed in figure and item number se-

Item procured and stocked and which

quence. Bulk materials are listed in NSN sequence.

otherwise would be coded PA except

b. Section III. Special Tools List. A list of spe-

that it is deteriorative in nature.

cial tools, special TMDE, and other special support

equipment authorized for the performance of main-

Support item, excluding support equip-

tenance.

ment, procured for initial issue or out-

c. Section IV. National Stock Number and

fitting and stocked only for subsequent

Part Number Index. A list, in National item iden-

or additional initial issues or out-

tification number (NIIN) sequence, of all National

fitting. Not subject to automatic

stock numbers (NSN) appearing in the listings, fol-

replenishment.

lowed by a list in alphameric sequence of all part

numbers appearing in the listings. National stock

Support equipment procured and

numbers and part numbers are cross-referenced to

stockec for initial issue or outfitting to

each illustration figure and item number appear-

specified maintenance repair

ance. This index is followed by a cross-reference list

activities.

of reference designators to figure and item

numbers.

Support equipment which will not be

stocked but which will be centrally

procured on demand.

3. Explanation of Columns.

a. Illustration. This column is divided as

Item procured and stocked to provide

follows:

for sustained support for the life of the

equipment. It is applied to an item

(1) Figure Number. Indicates the figure

peculiar to the equipment which, be-

number of the illustration on which the item is

cause of probable discontinuance or

shown.

shutdown of production facilities,

would prove uneconomical to re-

produce at a later time.