T M 5 5 - 1 7 3 0 - 2 2 5 - 2 3 P
6.
How
to
Locate
Repair
Parts
a,
When
National
Stock
Number
or
Part
Number
is
Not
Known.
(1)
First.
lJsing
the
table
of
contents,
determine
the
assembly
group
or
subassembly
group
to
which
the
item
belongs.
This
is
necessary
since
figures
are
prepared
for
assembly
groups
and
subassembly
groups,
and
listings
are
divided
into
the
same
groups.
(2)
Second.
Find
the
figure
covering
the
assembly
group
or
subassembly
group
to
which
the
item
belongs.
(3)
Third.
Identify
the
item
on
the
figure
and
note
the
item
number.’
(4)
Fourth.
Refer
to
the
Repair
Parts
List
for
the
figure
to
find
the
part
number
for
the
item
number
noted
on
the
figure.
(5)
Fifth.
Refer
to
the
Part
Number
Index
to
find
the
NSN,
if
assigned.
b.
When
National
Stock
Number
or
Part
Number
is
Known:
.1)
First.
Using
the
Index
of
National
Stock
Numbers
and
Part
Numbers,
find
the
pertinent
National
Stock
Number
or
Part
Number.
ThO
NSN
index is in National Item Identification
Number (NIIN) sequence
(
s
e
e
4
a
(
l
)
)
.
The
part
numbers
in
the
Part
Number
index
are
listed
in
ascending
alphanumeric
sequence
( s e e
4
.
b
. )o
Both
indexes
cross-reference
you
to
the
illustration
figure
and
item
number
of
the
item
you
are
looking
for.
(2)
Second.
After
finding
the
figure
and
item
number,
verify
that
the
item
is
the
one
you’re
looking
for,
then
locate
the
item
number
in
the
repair
parts
list
for
the
figure.
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