HOW TO FIND PARTNUMBER IN BOEING AIRCRAFT: PART 2

This second part of the series will cover finding part numbers and installation procedures for shielded wires, different splices, multi-core wires, grounding blocks, and grounding wires. The first example focuses on a shielded wire (1003-18) connected to an 'sm4' splice, the second on a multi-core blue and red wire (2002), and the third on a shielded wire grounded to a 'GB'.

The first example involves shielded wire 1003-18, identified by a circle in the wiring diagram. The 'sm4' refers to a splice. The front matter of the wiring diagram manual defines 'SM' as a splice within a bundle and 'SP' as a splice between bundles. 'SM' splices are not typically listed in the splice list, unlike 'SP' splices. The wire list provides details such as wire type (RO), gauge (18), and family (AC).

The 'Z' in '1003-Z' indicates shielding. The wireless specifies 'DED' (dead end) for the shield, meaning it's not connected anywhere. The video demonstrates how to find the procedure for handling dead-ended shields in the Structural Wiring Practices Manual (SWPM) under chapter 20-10-15, which details material and installation instructions, including heat shrink usage.

For the 'sm00004' splice, the type code is '9'. In the wiring diagram's front matter, code '9' corresponds to a 'Splice Moisture Seal'. While multiple part numbers are provided (e.g., Delta 436-36 through 41), the specific one is chosen based on the wire configuration (e.g., three wires on one side, two on the other). The SWPM in chapter 20-30-12 provides the detailed installation procedure, considering factors like temperature grade and wire outer diameter from other SWPM chapters.

The second example uses cable 2002, a multi-core wire with blue ('B') and red ('R') conductors, shielded, with a wire number of 'W-6276'. The wire list reveals the type code 'R1' for this shielded, two-conductor (blue and red) cable. On one side, the shielding is 'DED' (dead end), and on the other, it's connected to the ground. The SWPM (20-00-13) confirms R1 as a shielded cable with two conductors. The procedure for dead-ended shields is the same as in example one.

The third example focuses on the grounded shielding of wire 2002, labeled 'FD' which signifies a ferrule, and connected to grounding block 'GB12662'. The wire list identifies a jumper wire 0050 connected from the shielded wire to the grounding block. The type code '1' for the contact going into the grounding block is found in the front matter of the wiring diagram. This code '1' corresponds to a contact for a terminal block. The grounding list within the wiring manual provides the part number for the grounding block itself. The installation procedure for the grounding wire is found in SWPM chapter 20-10-15 under 'Assembly of Shield Ground Wire Without Integral Wire'. Finally, the installation and removal procedures for the grounding block are detailed in SWPM chapter 20-90-15, including diagrams, part numbers for tools, and contact specifications.