SECTION IV
INTRODUCTION TO ILLUSTRATED PARTS BREAKDOWN
4-1.
4-2.
GENERAL
This Illustrated Parts Breakdown lists and
describes the parts for the Pitot and Static Systems
Tester Assembly part number 7365 manufactured by
United Maufacturing Division, North Haven, Con-
necticut, and is divided into three sections consisting
of an INTRODUCTION (Section IV), a GROUP
ASSEMBLY PARTS LIST (Section V), and a
NUMERICAL INDEX (Section VI).
4-3. This Illustrated Parts Breakdown is prepared
for the identification and ordering of parts.
4-4. The Group Assembly Parts List (Section V)
consists of the complete Tester Assembly divided
into six groups, consisting of major assemblies and
subassemblies. Each assembly listed is followed
immediately by its component parts properly in-
dented thereunder, to show their relationship to the
assembly.
4-5. Parts are listed in the Part No. column by
their manufacturers or government part numbers.
4-6. The quantities listed in the Units per Assy
column of the Group Assembly Parts List are, in
the case of assemblies, the total quantity used per
assembly at the location indicated, while the compo-
nent parts indented under the assemblies are the
quantity used per assembly. The quantities speci-
fied, therefore, are not necessarily the total used
per Tester Assembly.
Refer to the Numerical Index
(Section VI) for the total quantities used per Tester.
4-7. TERMS, ABBREVIATIONS AND SYMBOLS.
4-8. Attaching parts are listed immediately follow-
ing the part(s) they attach and have the same inden-
tion. They are preceded by the words ATTACHING
PARTS) and are separated from the followilig parts
by the symbol ---*---
4-9. When a part or assembly is listed for refer-
ence purposes only and/or is called out elsewhere
in the Group Assembly Parts List, the abbreviation
Ref appears in the Units per Assy column.
4-10. The following list contains the abbreviations
used in the GAPL. Corresponding words and word
phrases are listed in the right-hand column.
ABBREVIATION
WORD OR WORD PHRASE
Ac
Alternating current
Al
Aluminum
Amp
Ampere
Ar
As required
ABBREVIATION
Assy
Brs
Dc
Dia
Fig.
Ft
GAPL
Hd
Hex
In.
Lg
Mtg
No.
NHA
Npt
P/N
Qty
Ref
Rh
SPDT
Sst
Std
Stl
Thd
Thk
UF
Vac
Vdc
WORD OR WORD PHRASE
Assembly
Brass
Direct current
Diameter
Figure
Foot
Group assembly parts list
Head
Hexagon
Inch
Long
Mounting
Number
Next higher assembly
National taper pipe (thread)
Part number
Quantity
Reference
Round head, Right hand
Single pole double throw
Stainless steel
Standard
Steel
Thread
Thick
Microfarad
Alternating current volts
Direct current volts
4-11. The Numerical Index (Section VI) contains
all part numbers that appear in the Group Assembly
Parts List and is compiled in accordance with the
numerical part number filing system described
below.
4-12. Part number arrangement starts in the left-
hand (first) position and continues from left to right,
one position at a time, until the part number numeri-
cal arrangement is determined. The order of pre-
cedence in beginning the part number arrangement
in the extreme left-hand (first position) of the part
number is as follows:
(a) Letters A through Z
(b) Numerals 0 through 9
NOTE
Alphabetical Os are considered numerical
zeros.
The order of precedence in continuing the part num-
ber arrangement in the second and succeeding posi-
tions of the part number from left to right is as follows:
(a) Space (blank position)
(b) Diagonal (slant)
(c) Point (period)
4-1