Numbers and Reference Numbers find the per-
tinent Federal stock number or reference num-
b e r . This index is in ascending FSN sequence
followed by a list of referenced numbers in as-
Repair parts not symbolized are applicable to all
cending alpha-numeric sequence, cross-referenced
models covered in this manual.
to the illustration figure number and item number.
(2) S e c o n d . Using the Repair Part Listing,
b. Repair parts mortality has been based on
find the assembly group of the repair part and
1,500 hours operation per year.
the illustration figure number and item number
c. Parts which require manufacure or assembly
referenced in the Index of Federal Stock Numbers
at a category higher than that authorized for in-
and Reference Numbers.
stallation will indicate in the source column the
c. When the Federal Stock Number or Reference
higher category.
N u m b e r is Known and the Repair Part is not
d. The following publications pertain to the
Illustrated:
welding machine and its components.
(1) First. Using the Index of Federal Stock
Lubrication order.
L O 5-3431-205-12
Numbers and Reference Numbers find the per-
Operator, organiza-
TM 5-3431-205-15
tinent Federal stock number or reference number
tional, field and
in the section titled Items not Illustrated and note
depot maintenance
the page number. This section is in ascending
manual.
FSN sequence followed by a list of reference
Operator, organiza-
TM 5-3431-214-15
numbers in alpha-numeric sequence, cross-ref-
tional, field and
erenced to page number.
depot maintenance
(2) Second. Using the Table of Contents,
manual.
locate the assembly group number and page
Organizational, DS,
TM 5-3431-215-15
number.
GS, and depot
maintenance
(3) Third. Using the applicable group num-
manual.
ber and page number, locate the pertinent stock
TM 53431-205-20P Organizational main-
number or reference number in the Repair Parts
tenance repair
Listing. Items which are not illustrated are listed
parts and special
at the end of the assembly group to which they
tool lists.
belong.
5. How to Locate Repair
Parts
Abbreviations
a. When Federal Stock Number or Reference
Number is Unknown:
(1) First. Using the table of contents,
de-
t e r m i n e the assembly group within which
the
repair part belongs. This is necessary since
illu-
strations are prepared for assembly groups,
and
listings are divided into the same groups.
(2) S e c o n d . Find the illustration covering
t h e assembly group to which the repair part
belongs.
(3) Third. Identify the repair part on the
illustration and note the illustration figure num-
7. Federal Supply Codes for Manufacturers
ber and item number of the repair part.
(4)
Fourth. Using the Repair Parts Listing,
find the
assembly group to which the repair part
belongs
and locate the illustration figure and item
number
noted on the illustration.
b. When the Federal Stock Number or Refer-
ence Number is Known:
(1) First. Using the Index of Federal Stock