(1) First. Using the table
g. Unit of Measure (U/M).
of contents, determine the functional
Indicates the standard of the basic
group within which the item belongs.
quantity of the listed item as used
This is necessary since illustrations
in performing the actual maintenance
are prepared for functional groups,
function. This measure is expressed
and listings are divided into the same
by a two-character alphabetical
abbreviation (e.g., ea, in, pr, etc).
When the unit of measure differs from
(2) Second. Find the
the unit of issue, the lowest unit of
illustration covering the functional
issue that will satisfy the required
group to which the item belongs.
units of measure will be requisitioned.
(3) Third. Identify the item
on the illustration and note the
h. Quantity Incorporated in Unit.
Indicates the quantity of the item used
illustration figure and item number
of the item.
in the breakout shown on the illustra-
tion figure, which is prepared for a
(4) Fourth. Using the Repair
functional group, subfunctional group,
Parts Listing, find the figure and item
or an assembly. A "V" appearing in this
number noted on the illustration.
column in lieu of a quantity indicates
that no specific quantity is applicable,
(e.g., shims, spacers, etc).
b. When National Stock Number
or Part Number is Known:
D-4 SPECIAL INFORMATION
(1) First. Using the Index
a. Usable on codes are shown in the
of National Stock Numbers and Part
description column. Uncoded items are
Numbers, find the pertinent National
applicable to all models. Identifi-
stock number or part number. This index
cation of the usable codes used in this
is in NIIN sequence followed by a list
of part numbers in alphameric sequence,
cross-referenced to the illustration
figure number and item number.
MOUNT, PERISCOPE, M119
(2) Second. After finding
the figure and item number, locate the
MOUNT, PERISCOPE, M119E1
figure and item number in the repair
b. Detailed assembly instructions
for items source coded to be assembled
are found in this manual.
HOW TO LOCATE REPAIR
a. When National Stock Number
or Part Number is Unknown:
D-5 (D-6 blank)