Section I. INTRODUCTION - TM-55-1905-220-20P-10017

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TM-55-1905-220-20P-1 Landing Craft Utility LCU 1671 Through 1679 NSN 1905-01-009-1056 Manual

Source Code

TM 55-1905-220-20P-1

ORGANIZATIONAL MAINTENANCE REPAIR

PARTS AND SPECIAL TOOLS LIST

Section I. INTRODUCTION

SCOPE. This RPSTL lists and authorizes spares and repair parts; special tools; special test,

measurement,

and diagnostic equipment (TMDE); and other special support equipment required for performance of

organizational and general support maintenance of the Landing Craft Utility, LOU 1671 through LOU 1679. It

authorizes the requisitioning, issue, and disposition of spares, repair parts and special tools as indicated by the

source, maintenance and recoverability (SMR) codes.

GENERAL. In addition to this section, Introduction, this Repair Parts and Special Tools List is divided

into the following sections:

a. Section II. Repair Parts List. A list of spares and repair parts authorized by this RPSTL for use in the

performance of maintenance. This list also includes parts which must be removed for replacement of the

authorized parts. Parts lists are composed of functional groups in ascending alphanumeric sequence, with the

parts in each group listed in ascending figure and item number sequence. Bulk materials are listed in item

name sequence. Items are shown in the associated illustration(s)/figure(s).

b. Section III Special Tools List. A list of special tools, special TMDE, and other special support

equipment authorized by this RPSTL (as indicated by Basis of Issue (BOI) information in DESCRIPTION AND

USABLE ON CODE column) for the performance of maintenance.

c. Section IV. Cross-Reference Index. A list, in National Item Identification Number (NUN) sequence, of

all National stock numbered items appearing in the listing, followed by a list in alphanumeric sequence of all

part numbers appearing in the listings. National stock numbers and part numbers are cross referenced to each

illustration figure and item number appearance. The figure and item number index lists figure and item

numbers in alphanumeric sequence and cross references NON, CAGEC and part number.

EXPLANATION OF COLUMNS (SECTIONS II AND lII) .

a. ITEM NO. (Column (1)) . Indicates the number used to identify items called out in the illustration.

b. SMR Code (Column (2)). The Source, Maintenance, and Recoverability (SMR) code is a 5-position

code containing supply/requisitioning information, maintenance category authorization criteria, and disposition

instruction, as shown in the following breakout:

Source Code

Maintenance Code

Recoverability Code

1st two

positions

How you get

3rd position

4th position

Who determines

an item

Who can install

Who can do

disposition action

replace or use the

complete repair*

on an

item

on the item

unserviceable item

* Complete Repair: Maintenance capacity, capability, and authority to perform all corrective

maintenance tasks of the "Repair" function in a use/user environment in order to restore serviceability to

a failed item.