TM-9-2350-311-24P-2
CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS, AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 1998
TM-9-2350-311-24P-2 - Page 10 of 480
TM 9-2350-311-24P-2
3. Explanation of Columns (Sections II and III) - (Continued)
(1) Source Code. The source code tells you how to get an item needed for maintenance, repair, or
overhaul of an end item/equipment. Explanations of source codes follow:
Code
Explanation
Stocked items; use the applicable NSN to request/requisition items with these source codes.
They are authorized to the maintenance level indicated by the code entered in the 3rd position
of the SMR code.
*NOTE:ltems coded PC are subject to deterioration.
Items with these codes are not to be requested/requisitioned individually. They are part of a kit which
is authorized to the maintenance category indicated in the 3rd position of the SMR code.
The complete kit must be requisitioned and applied.
Code
Explanation
MO -
(Made at unit
Items with these codes are not to be requested/requisitioned individually. They
Level)
must be made from bulk material which is identified by the part number in the
MF -
(Made at DS
DESCRIPTION AND USABLE ON CODE (UOC) column and listed in the Bulk
Level)
Material group of the repair parts list in this RPSTL. If the item is authorized
MH -
(Made at GS
to you by the 3rd position code of the SMR code, but the source code indicates it is
Level)
made at a higher level, order the item from the higher level of maintenance.
ML -
(Made at Special-
ized Repair
Act (WA))
MD -
(Made at Depot)
AO -
(Assembled by
Items with these codes are not to be requested/requisitioned individually. The
unit Level)
parts that make up the assembled item must be requisitioned or fabricated
AF -
(Assembled by
and assembled at the level of maintenance indicated by the source code.
DS Level
If the 3rd position code of the SMR code authorizes you to replace the item,
AH -
(Assembled by
but the source code indicates the items are assembled at a higher level, order
GS Level)
the item from the higher level of maintenance.
AL-
(Assembled by
SRA
AD-
(Assembled by
Depot)
XA-
Do not requisition “XA”-coded item. Order its next higher assembly. (Also, refer to the NOTE below.)
XB-
If an “XB” item is not available from salvage, order it using the CAGEC and part number given.
XC-
Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturer’s part
number.
XD -
Item is not stocked. Order an “XD”-coded item through normal supply channels using the CAGEC and part
number given, if no NSN is available.
NOTE
Cannibalization or controlled exchange, when authorized, may be used as a source of supply for items with
the above source codes, except for those source coded "XA”.
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