TM 10-4610-237-20P
UNIT AND DIRECT SUPPORT MAINTENANCE
REPAIR PARTS AND SPECIAL TOOLS LIST
Section I. INTRODUCTION
1. 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 unit and direct support
maintenance of the 20K Water Storage and Distribution System, Model 20KWSDS. It authorizes the requisitioning,
issue, and disposition of spares, repair parts and special tools as indicated by the source, maintenance and recoverability
(SMR) codes.
2. 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. Repair parts kits
are listed separately in functional groups in Section II. Items listed 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 (NIIN) 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 NSN, CAGEC and part number.
3. EXPLANATION OF COLUMNS (SECTIONS II AND III).
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
XX
1st two
positions
Maintenance Code
XX
Recoverability Code
XX
How you get
an item
3rd position
Who can install,
replace or use the
item
4th position
Who can do
complete repair*
on the item
Who determines
disposition action
on an
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.
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