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|  MIL-S-55257C(CR)
3.10
Welding. Welded joints shall be as defined by the drawings
and shall be such that grinding on the finished weld will be unnecessary
except where grinding is specified on the drawings. Inert-gas-shielded
arc welding using helium, argon, or a mixture of the two shall be used for
arc welding of aluminum. Welds shall conform to MIL-W-6858 Cl. B, MIL-W-
45205 Cl. B or MIL-W-8611 as applicable. All surfaces to be welded shall
be cleaned in accordance with good commercial practice and shall be free
of scale, paint, grease, and other foreign materials. Welds shall have
thorough penetration and good fusion and shall be free of scabs, blisters,
adnormal pock marks, cracks, voids, slag inclusions, and other harmful de-
fects. Welded assemblies shall be cleaned to remove any scale, oxidation
products, and excess flux. Any acid used in cleaning shall be completely
neutralized and removed. (See 3.2.2, 3.20 & 4.4)
3.11
Wiring and cabling. Wiring and cabling shall be in accord-
ance with the drawings and shall be neat and sturdy. (See 3.2.2 & 3.20)
3.11.1 Slack. Wires and cables shall be as short as practical ex-
cept that sufficient slack shall be provided for the following purposes:
a. To prevent undue stress on cable forms, wires, and connec-
tions, including connections to resiliently supported parts.
b. To enable parts to be removed and replaced during servicing
without disconnecting other parts.
c. To provide for at least two replacements of the part to
which the wire or cable is connected, except for certain radio-frequency
leads which must be as short as possible for electrical reasons.
d. To ensure freedom of motion of lugs or terminals normally
intended to have some degree of movement.
e. To facilitate field repair of broken or cut wires.
f. To prevent chafing or breaking of individual wires due to
repeated flexing of hinged parts.
3.11.2 Protection, Wires and cables shall be so placed and protec-
ted as to avoid contact with rough or irregular surfaces or sharp edges.
Wires shall not be bent sharply where they enter insulation material.
3.11.3 Splicing. Wires in a continous run between two terminals
shall not be spliced during the wiring operation unless specifically in-
dicated by the drawings.
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