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Home > Ordnance Documents and other related manuals > > Symbols - Od1706a0009
Part B - Identyfying Components of the M1A1 Schematic Diagrams
Location Symbols - Continued

Wiring Diagrams, M1A1 Tank
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The  example  above  tells  you  that  you  are  looking  at  the  hull
elementary wiring diagram used at the DS/GS levels of maintenance,
and that you have the first of 30 sheets that make up the complete
wiring diagram.
2.
Symbols.
In the schematics and wiring diagrams you use to maintain and repair
the tank's electrical system, different symbols show the purpose of
the components.  Some schematics and wiring diagrams give examples of
the symbols used on the first page.
If the schematic or wiring
diagram does not list and identify its symbols, refer to Appendix A
of TM 9-2350-264-24-1 for a listing of the symbols used.  (See sheet
1 of the hull elementary wiring diagram (extracted from TM 9-2350-
264-24-1) in appendix A of this lesson, for examples.)

Location Symbols.  When a schematic or wiring diagram has two
or more sheets, you must have a way to locate a circuit when
it continues on another sheet.
Additionally, you must have
the same capability when a circuit continues at a different
point on the same sheet.
The schematics or wiring diagram may show the highest find
number used also.
For example, look at sheet 1 of the hull
elementary wiring diagram.
At the lower right side of this
sheet, you find the highest find number it uses (151).
--
Find  and  sheet  numbers.
The  schematics  and  wiring
diagrams use a circle, with a horizontal line through the
center, as the symbol indicating a circuit continues on
another sheet of the  diagram.
The  number in the  top
portion of the symbol shows the reference number to find
on the new sheet.  The number in the bottom portion of the
symbol  shows  the  sheet  number  on-which  the  circuit
continues.  For example:
The example above indicates the circuit continues on sheet number 2
and you must look for find number 1.
3
OD1706






Western Governors University

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