(2)
Repair the external cable jackets.
(3)
Replace the electrical connectors.
B.
These are wire harness parts:
(1)
Wire - A single, insulated, electrical connector.
(2)
Cable - A group of wires enclosed by an insulated jacket.
(3)
Bundle - A group of cables tied together with lacing tape.
(4)
Harness - A single bundle of two or more branched groups of bundles with connectors or terminal lugs attached to the ends of the bundles.
TASK 49-14-00-358-001
2. APU Wire Harness Repair_______________________
A. General
(1)
This procedure gives a repair for broken or damaged wires. These are the limits for wire repairs:
(a)
Do not make a splice in a wire less than 6 inches (150 mm) from the shell of a connector.
(b)
Do not make a splice adjacent to a splice.
(c)
Do not make more than two splice repairs on a wire.
(d)
Do not make a splice below a loop clamp position.
(e)
Do not put a splice in a fire detection circuit.
(f)
A cable that has a splice in it must be replaced when the harness is removed, or during the next shop visit.
(g)
A wire with a splice must be resistant to moistuare and damage due to friction.
B.
Standard Tools and Equipment
(1)
Wire stripper - 16 to 20 gage, Strip Master 45092 (or equivalent). Ideal Industries, Inc., 1008 Becker Pl., Sycamore, IL 60178
(2)
Wire splice crimp tool - P/N WT-145A (or equivalent). Thomas and Betts Ltd., 6505 Mississauga Roads, Mississauga, Ontario, Canada, L5N 1A6.
(3)
Cable ferrule crimp tool - P/N WT-44 P/N WT 540 (or equivalents). Thomas and Betts Ltd., 6505 Mississauga Roads, Mississauga, Ontario, Canada, L5N 1A6.
C.
Consumable Materials
(1)
BACT12C-20 - Insulated wire splices
(2)
Braid, Tubular (1/4 inch and 3/8 inch)
(3)
G00057 Tape, Anti Chafing - Scotch 63
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE MANUAL
(4)
G00058 Tape, Anti Chafing - Scotch 65 (optional to Scotch 63)
(5)
G00152 Tape, Insulating - Scotch 4202
(6)
Tape, Lacing - P&WC P/N 3112698-01
(7)
G00054 & G00055 Cable ferrules (use the ferrules shown in the table below as required):
~.................................................................. | APPLICATION | INNER FERRULE P/N | OUTER FERRULE P/N | .................................................................... | Cables with one wire | GSB109 | GSC199 | .................................................................... | Cables with two wires| GSB175 | GSC281 | 2......................…....................…......................1
Thomas and Betts Ltd., 6505 Mississauga Roads, Mississauga, Ontario, Canada, L5N 1A6.
D. References
(1)
49-14-00/401, APU Wire Harness
(2)
WDM 49-11-16, 49-11-17, 49-11-18
(3)
SSM 49-11-01
E.
Access
(1)
Location Zone 317 APU Compartment-Forward of the Air Inlet Plenum on the APU engine, LH
318 APU Compartment-Forward of the Air Inlet Plenum on the APU engine, RH.
(2)
Access Panel
317AL APU Access Door
318AR APU Access Door
F.
Procedure
S 868-002
(1)
Make sure the APU control switch on the P5 panel is OFF and attach a DO-NOT-OPERATE tag.
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