DOC AIRBUS | AMM A320FWIRE INSULATION REPAIR PROCEDURE - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. Wire Insulation Repair Procedure
A. General
(1) This chapter gives the procedure for the wire insulation repair on the power plant electrical wire harness.
(2) Consumable materials can be replaced with equivalent items.
(3) This is a group of words that is shown in this procedure.
(a) Harness - A single bundle of two or more branched group of bundles terminated by connectors or terminal lugs.
(b) Bundle - A group of cables tied together with lacing tape.
(c) Cable - A group of unterminated wires enclosed by a metal shield and insulated jacket.
(d) Wire - A single metallic strand that is insulated.
2. Standard Equipment
** ON A/C NOT FOR ALL - none.
3. Consumable Material
** ON A/C NOT FOR ALL | ____________________________________________________________________________ |
| ! PART No. ! SUPPLIER ! ! |
| ! ! Code ! DESIGNATION ! |
| !_______________!_______________!____________________________________________! |
| ! ! ! ! |
| ! Scotch No. 62 ! 76381 ! Teflon Tape ! |
| ! (V02-195) ! 81349 ! ! |
| !_______________!_______________!____________________________________________! |
4. Shielded Wire Repair With No Splice
A. Procedure
(1) Repair the cable if the damage on the insulated jacket and the braided shield is acceptable as follows.
(a) The insulated jacket shows the braided shield up to 50 percent around the cable and less than 50.8 mm (2.00 in.) in length.
(b) The braided shield has 80 percent of the metal strands that are not damaged at any location.
(c) Check that the ends of the metal strands are not in contact with the core of the wire. Trim the metal strands as necessary.
(d) If the braid or the external jacket is damaged more than this repair, cut the wire and do the wire splice repair procedure given in chapter 70-71-23.
(2) Remove the lacing tape from the wire harness to get access to the damaged cable.
(3) Clean the cable 76.2 mm (3.00 in.) on each side of the area to be repaired by the tape wrap.
(4) Wrap one layer of the Scotch No. 62 Teflon Tape or an equivalent around the cable with a 20 percent overlap on each wrap of the tape. Extend the tape on each side of the worn area of the insulated jacket by 25.4 mm (1.00 in.) or more.
(5) Wrap another layer of the Scotch No. 62 Teflon Tape or an equivalent over the Teflon tape with a 20 percent overlap on each wrap of the tape. Extend the Teflon tape by 12.7 mm (0.50 in.) on each side of the insulation tape.
(6) Replace the wire harness lacing that was removed by the procedure given in Chapter 70-71-14.