-
replace the damaged tube
-
replace the damaged part with a tube splice
-repair the damaged tube with a fitting (if the damaged are is sufficiently small).
-completely remove all corrosion and treat affected surface area as described in the corrosion prevention manual.
(3)
When you remove, install, or do work with hydraulic tube assemblies, obey the guidelines that follow:
(a) When you remove tubes, you must make sure the tubes and port fitings have tags that identify the correct connection location.
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(b) Do not move or change the tube bends. If you move or change the bend in the tube, these bad effects can occur:
1) If you move or change a bend in the tube, it can become possible that the tube will align with the incorrect port. If this occurs, incorrect reconnection or cross-correction
2) of the tubes can become possible.If you move or change the bend in the tube, it can be possible that the tube will have too much stress when it is connected. Stress can cause cracks in the tubes.
(c) If you must bend the tube assemblies to fit the installation, do not bend more than permitted by the ovality limits in Fig. 801. We recommend that you use a bend block or tool equivalent to the Parker G-824 hand bender. Make sure the bend block supports the tube bend beyond the neutral axis of the bend, as shown in Fig. 801, and that the bend-ovality allowables are not exceeded.
(d) Do not repair dents or chafed areas. Replace the tube or tube section if the defect depth is more than the values in Fig. 803. It is not necessary for you to repair or replace tubes with defect depth less than these values.
WARNING:_______ DO NOT USE TITANIUM FITTINGS WHEN YOU REPAIR THE OXYGEN SYSTEM
TUBES. TITANIUM FITTINGS CAN CAUSE A FIRE OR INJURY TO
PERSONS.
(4) Electrical rigid conduit repair:
(a) Smooth dents are permitted to the electrical rigid conduit with these limits as shown in Fig. 841. 1) Dent depth damage is not more than 20 percent of the outer
diameter. 2) The conduit is not dented or has a crack that causes it to have kinks, to rub, or to show the innner wire. 3) The dent is smooth and does not make a sharp wrinkle on the outer surface of the conduit. 4) There are no cracks in the conduit.
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5) Dents are not permitted on electrical rigid conduits in the
fuel tanks.
(b) Repair or replace electrical rigid conduits if the damage is
more than the limits.
(c) If you must form the electrical rigid conduit tube to fit an
installation, do not bend more than permitted by the forming
limits as shown in Fig. 842.
(5) To repair a damaged tube section, cut out the damaged tube section
and replace it with a fitting or with an assembled tube and fitting
assembly.
(6) To replace a BACA14BP fitting you must use another BACA14BP fitting.
(7) To install the new BACA14BP or D10203 fitting on the new tube
section, use Install Permaswage fittings (AMM 20-10-51/801). Verify
electrical resistance where required (AMM 20-10-51/401).
NOTE: Use BACA14BP fittings only for replacement of other BACA14BP____
fittings unless approved by The Boeing Company on a
case-by-case basis. The MS screw-together ends on this
fitting are prone to deformation and galling from repeated
assembly and disassembly and my leak.
(8) To replace a BACU24AB swage union, cut out the damaged fitting and
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