(3) Splices are not allowed in both primary and backup system circuits: If one circuit is spliced the other circuit must not be spliced.
(4) Splices in critical engine circuits
(a) Splices in critical engine circuits are not recommended.
(b) If it becomes necessary to splice a wire in critical engine circuits, use these repair limits.
(c) The critical engine circuits are listed below: 1 Channels A and B of the Engine Control Unit.
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2 Engine Fire Detection System.
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3 All Fuel Control and Monitoring circuits.
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4 All Oil Metering and Monitoring circuits.
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5 All Hydraulic Fluid Metering and Monitoring circuits.
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(5) Maximum number of splices
(a) Single conductor wire:
- one splice per conductor.
(b) Two conductor cable:
- one splice per conductor.
(c) Three conductor cable:
- one splice per conductor.
(d) Four conductor cable:
- one splice per conductor.
(6) Splices may not be closer than 6 in. (152.3997 mm) to a conductor backshell.
(7) Splices must be offset from each other by at least 0.12 in. (3.0479 mm) when splicing more than one wire in a bundle.
(8) The splice must not change the clamping or routing of the wire harness.
6. Preparation for wire repair
___________________________
(Ref. Fig. 001)
A. Procedure
WARNING: ISOPROPYL ALCOHOL IS CLASSIFIED AS A HAZARDOUS MATERIAL WHICH MAY CAUSE INJURY OR ILLNESS IF NOT PROPERLY USED. THIS PRODUCT SHOULD BE USED ONLY IN ACCORDANCE WITH THE MANUFACTURER'S SPECIFIC SAFETY AND HEALTH RECOMMENDATIONS. PRIOR TO USE OF THIS PRODUCT, CAREFULLY READ THE APPLICABLE "MATERIAL SAFETY DATA SHEET" AND OBEY ALL LISTED SAFETY AND HEALTH PRECAUTIONS.
(1) Clean the repair area with isopropyl alcohol.
(2) If installed, remove a piece of the harness outer jacket to access the damaged wire.
(a) Measure an equal distance on each side of the damaged area and mark it.
(b) Use a utility knife or scissors to cut around the outer jacket at the marks. Do not damage the metal overbraid.
(c) Cut the outer jacket down the center from one mark to the other and remove the piece of the outer jacket.
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Harness Outer Jacket and Overbraid Removal
Figure 001
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(3) If installed, remove a piece of the metal overbraid to access the damaged wire.
(a) Measure an equal distance on each side of the damaged area and mark it.
(b) Use scissors or wire cutters to cut the metal overbraid around the harness at the marks. Do not damage the inner protective sleeve.
(c) Cut the overbraid down the center from one mark to the other and remove the piece of metal overbraid.
(4) Remove a section of the inner protective sleeve to access the damaged wire.
(a) Measure an equal distance on each side of the damaged area and mark it.
(b) Use scissors to cut the inner protective sleeve around the harness at the marks.
(c) Cut the inner protective sleeve down the center from one mark to the other and remove the section of the protective sleeve.
(5) If required, remove any tape which is wound around the wires to access the damaged wire.
7. Unshielded Wire Repair______________________ (Ref. Fig. 002)
A. Procedure
(1) Determine the size of the damaged area.
(a) If the wire is damaged or broken in one place, cut the wire at the center of the damaged area and repair as shown below.
(b) If a section of the wire/cable is damaged:
1_ Cut and remove the damaged section from the harness.
NOTE : See AWL Section 92-90 for wire type, gauge and length.____
2_ Cut a piece of replacement wire/cable to extend to both ends
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