(2) Second. Using the Repair parts listing, find
Military Standard models (model
the assembly group of the repair part and the illustration
2A042-2 and 2A042-3).
figure number and item number referenced in the'
LO 5-2805-258-12
Engine, gasoline, 10 hp, Military
Index of Federal Stock Numbers and Reference
Standard Models (model 2A042-2
Numbers.
and 2A042-3).
c. When the Federal Stock Number or Reference
LO 5-3895-341-12
Roller,
towed,
vibrating,
Number is Known and the Repair Part is not Illustrated:
airmobile, gasoline engine driven
(1) First. Using the Index of Federal Stock
(Essick Model VR55TM).
Numbers and Reference Numbers find the pertinent
c. The same illustrations are used to illustrate the
Federal stock number or reference number in the section
repair parts and special tools listed in both organizational
titled "Items Not Illustrated" and note the group number.
maintenance section and direct and general support and
This section is in ascending FSN sequence followed by a
depot maintenance section.
list of reference numbers in alpha-numeric sequence
5. How to Locate Repair Parts
cross-referenced to assembly group number.
a. When the Federal Stock Number or Reference
(2) Second. Using the Table of Contents, locate
Number is Unknown:
the assembly group number and page number.
(1) First. Using the table of contents, determine
(3) Third. Using the applicable group number and
the assembly group within which the repair part belongs.
page number, locate the pertinent stock number or
This is necessary since illustrations are prepared for
reference number in the Repair Parts Listing.
assembly groups, and listings are divided into the same
6. Abbreviations
groups.
(2) Second. Find the illustration covering the
BKT ................................... Bracket
assembly group to which the repair part belongs.
BRG .................................. Bearing
(3) Third.
Identify the repair part on the
DIA .................................... Diameter
illustration and note the illustration figure and item
ENG .................................. Engine
number of the repair part.
GA ..................................... Gauge
(4) Fourth. Using the Repair Parts Listing, find
IN ...................................... Inch
the assembly group to which the repair part belongs and
LG ..................................... Long
locate the illustration figure and item number noted on the
MTG .................................. Mounting
illustration.
NO. ................................... Number
b. When the Federal Stock Number or Reference
NPT ................................... National Pipe Thread
Number is Known:
NPTF ................................. National Pipe Thread Fine
(1) First. Using the Index of Federal Stock
PTO ................................... Power Takeoff
Numbers and Reference Numbers find the pertinent
SPEC ................................ Specification
Federal stock number or reference number. This index is
TEMP ................................ Temperature
in ascending FSN sequence followed by a list of reference
THD.................................... Thread
numbers in alpha-numeric sequence, cross-referenced to
THK ................................... Thick
the illustration figure number and item number.
W/ ...................................... With
D-3