5. How to Locate Repair Parts
required, a minimum description to identify the item.
a. When National stock number or part number is
g. Unit of Measure (U/M). Indicates the standard of
the basic quantity of the listed item as used in performing
(1) First. Using the table of contents, determine the
the actual maintenance function. This measure is ex-
functional group within which the item belongs. This is
pressed by a two-character alphabetical abbreviation (e.g.,
necessary since illustrations are prepared for functional
ea, in, pr, etc). When the unit of measure differs from the
groups and listings are divided into the same groups.
unit of issue, the lowest unit of issue that will satisfy the
(2) Second. Find the illustration covering the func-
required units of measure will be requisitioned.
tional group to which the item belongs.
h. Quantity Incorporated in Unit. Indicates the quantity
(3) Third. Identify the item on the illustration and
of the item used in the breakout shown on the illustration
note the illustration figure and item number of the item.
figure, which is prepared for a functional group, subfunc-
(4) Fourth. Using the Repair Parts Listing, find the
tional group, or an assembly.
figure and item number noted on the illustration.
b. When National stock number or part number is
4. Special Information
a. The following publication pertains to the
(1) First. Using the Index of National Stock Num-
RT-505/PRC-25 and its components:
bers and Part Numbers, find the pertinent National stock
TM 11-5820-398-12, Radio Set AN/PRC-25 (In-
number or part number. This index is in NIIN sequence
c l u d i n g Receiver-Transmitter, Radio
followed by a list of part numbers in alphameric sequence,
cross-referenced to the illustration figure number and
b. The illustrations in this manual are identical to those
published in TM 11-5820-497-34P. Only those parts
(2) Second. After finding the figure and item num-
assigned the third position SMR maintenance code "C"
ber, locate the figure and item number in the repair parts
or "O" are listed in the tabular listing; therefore, there
may be a break in the item number sequence. Only illus-
trations containing organizational authorized items appear
in this manual.
(Next printed page is 4)