eral stock number or reference number in the sec-
tion titled "Items Not Illustrated" and note the group
a. Repair parts mortality has been based on 1500
number. This section is in ascending FSN sequence
hours operation per year.
followed by a list of reference numbers in alpha-
b. Parts which require manufacture or assembly
n u m e r i c sequence,
cross-referenced
to
assembly
at a category higher than that authorized for instal-
group number.
lation will indicate in the source column the higher
(2) Second. Using the Table of Contents, locate
category.
the assembly group number and page number.
c. T h e f o l l o w i n g publication pertains to the water
(3) Third. Using the applicable group number
cooled inert gas shielded arc welding set and its com-
and page number, locate the pertinent stock number
ponents:
or reference number in the Repair Parts Listing.
Organizational, Direct
TM 5-3431-226-15
Items which are not illustrated are listed at the
Support General Sup-
end of the assembly group to which they belong.
port and Depot Main-
tenance Manual
d. The same illustrations are used to illustrate the
repair parts and special tools listed in both organiza-
tional maintenance section and the direct support
maintenance section.
a. When
Federal Stock Number or Reference Num -
ber is Unknown:
7. Federal Supply Codes for Manufacturers
(1) First. Using the table of contents determine
t h e assembly group within which the repair part
belongs. This is necessary since illustrations are pre-
pared for assembly groups, and listings are divided
into the same groups.
(2) Second. Find the illustration covering the
assembly group to which the repair part belongs.
(3) Third. Identify the repair part on the illustra-
tion and note the illustration figure and item num-
ber of the repair part.
(4) Using the Repair Parts Listings, find the
assembly group to which the repair part belongs and
locate the illustration figure and item number noted
on the illustration.
b. When Federal Stock Number or Reference is
Known:
(1) First. Using the Index of Federal Stock Num-
bers and Reference Numbers find the pertinent Fed-
eral stock number or reference number. This index
is in ascending FSN sequence followed by a list of
reference numbers in alpha-numeric sequence, cross-
referenced to the illustration figure number and item
number.
(2) Second. Using the Repair Parts Listing, find
the assembly group of the repair part and the illus-
tration figure number and item number referenced
in the Index of Federal Stock Numbers and Refer-
ence Numbers.
c. When the Federal Stock Number or Reference
Number is Known and the Repair Part is Not Illus-
trated:
(1) First. Using the Index of Federal Stock Num-
bers and Reference Numbers find the pertinent Fed-