Section I. INTRODUCTION - TM-55-1935-204-24P0012

TM 55-1935-204-24P

Section I. INTRODUCTION

(2) Item Number. The number used to identify

1. Scope. This manual lists repair parts, special tools,

each item called out in the illustration.

test, measurement and diagnostic equipment (TM DE),

b. Source, Maintenance, and Recoverability Codes

and other support equipment required for operation and

(SMR).

performance of organizational, direct support and general

(1) Source Code. Source codes are assigned to

support of the Crane, Barge, 100 Ton.

support items to indicate the manner of acquiring support

items for maintenance, repair, or overhaul of end items.

2. General.

Source codes are entered in the first and second positions

of the Uniform SMR Code format as follows:

a. Section II - Repair Parts List. A list of repair parts

authorized for use in the performance of maintenance.

Code

Definition

The list also includes parts which must be removed for

replacement of the authorized parts. Parts lists are

PA Item procured and stocked for anticipated or known

composed of assembly groups in ascending numerical

usage.

sequence, with the parts in each group listed in figure and

PB Item procured and stocked for insurance purpose

item number sequence. Bulk materials are listed in NSN

because essentiality dictates that a minimum

sequence, as the last group in Section II.

quantity be available in the supply systems.

PC Item procured and stocked and which otherwise

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

would be coded PA except that it is deteriorative in

tools, TMDE, and support equipment authorized for the

nature.

performance of maintenance, at the organizational, Direct

Support and General Support level.

PD Support item, excluding support equipment,

procured for initial issue or outfitting and stocked

c. Section IV - National Stock Number and Part

only for subsequent or additional initial issues or

Number Index. A list, in ascending numerical sequence,

outfittings. Not subject to automatic replenishment.

of all National Stock Numbers in NIIN sequence

PE Support equipment procured and stocked for initial

appearing in the listings, followed by a list, in

issue or outfitting to specified maintenance repair

alphanumeric sequence, of all part numbers appearing in

activities.

the listings. National Stock Number and part numbers are

PF Support equipment which will not be stocked but

cross-referenced to each illustration figure and item

which will be centrally procured on demand.

number appearance.

PG Item procured and stocked to provide for sustained

support for the life of the equipment. It is applied to

3. Explanation of Columns. The following provides an

an item peculiar to the equipment which, because

explanation of columns found in the tabular listings:

of probable discontinuance or shutdown of

production facilities, would prove uneconomical to

a. Illustration. This column is divided as follows:

reproduce at a later time.

(1) Figure Number.

Indicates the figure

number. of the illustration in which the item is shown.