TM-9-2815-225-34-P
ENGINE, DIESEL: 6 CYLINDER IN-LINE TURBOCHARGED, CUMMINS MODEL NTC-400
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2005
TM-9-2815-225-34-P - Page 516 of 736
TM 9-2815-225-34&P
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REPAIR PARTS INTRODUCTION (Contd)
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 follows.
Code
PA
PB
PC**
PD
PE
PF
PG
KD
KF
KB
MO- (Made at Unit Level)
MF- (Made at DS Level)
MH- (Made at Specialized
Repair Act (SRA))
MD- (Made at Depot)
AO-
(Assembled by Unit Level)
AF-
(Assembled by DS Level)
AH-
(Assembled by GS Level)
AL-
(Assembled by SRA)
AD-
(Assembled by Depot)
Explanation
Stocked items; use the applicable NSN to request/requisition
items with these source codes. They are authorized to the
category indicated by the code entered in the third position of
the SMR code.
** NOTE: Items 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 third position of the SMR
code. The complete kit must be requisitioned and applied.
Items with these codes are not to be requested/requisitioned
individually. They must be made from bulk material which is
identified by the part number in the DESCRIPTION AND
USABLE ON CODE (UOC) column and listed in the bulk
material group of the repair parts list. If the item is authorized
to you by the third position code of the SMR code, but the source
code indicates it is made at a higher level, order the item from
the higher level of maintenance.
Items with these codes are not to be requested/requisitioned
individually. The parts that make up the assembled item must
be requisitioned or fabricated and assembled at the level of
maintenance indicated by the source code. If the third position
code of the SMR code authorized you to replace the item, but the
source code indicates the item is assembled at a higher level,
order the item from the higher level of maintenance.
XA-
Do not requisition an XA-coded item. Order the next higher assembly. (Also, refer to the note
below.)
XB-
If an XB item is not available from salvage, order it using the Commercial and Government
Entity Code (CAGEC) and Part Number (P/N) 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 National Stock Number (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 source code XA.
Maintenance Code.
Maintenance codes tell you the level(s) of maintenance authorized to USE and
REPAIR support items. The maintenance codes are entered in the third and fourth positions of the
SMR code as follows:
• Third Position.
The maintenance code entered in the third position tells you the lowest
maintenance level authorized to remove, replace, and use an item. The maintenance code entered
in the third position will indicate authorization to one of the following levels of maintenance.
Code
Application/Explanation
C
– Crew or operator maintenance done within organizational maintenance.
O
– Unit level can remove, replace, and use the item.
F
– Direct support level can remove, replace, and use the item.
H
– General support level can remove, replace, and use the item.
L
– Specialized repair activity can remove, replace, and use the item.
D
– Depot level can remove, replace, and use the item.
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