MIL-DTL-17060G(SH)
APPENDIX A
EXAMINATION OF SERVICE A MOTORS
A.1. SCOPE
A.1.1 Scope. This appendix covers a list of examinations which shall be performed before, during, and after
assembly of Service A motors furnished in accordance with this specification. This appendix is a mandatory part of
the specification. The information contained herein is intended for compliance.
A.2. REQUIREMENTS
A.2.1 General. General examination shall be conducted to determine conformance to the following:
a. Materials are as specified on approved drawings. Material has been ordered and inspected in accordance
with the applicable material or component specification.
b. Welding and brazing has been done in accordance with the approved drawings. There is no evidence of
non-fusion, weld cracks, undersized welds, incomplete welds, heavy porosity, weld splatter, or slag.
c. Soldered connections are solidly bonded. There are no cold soldering, rosin joints, corrosive flux, fractured
joints, or excess solder. Satisfactory connections have been made prior to soldering. Bolted connections include
approved locking devices and are secured against vibration. Solderless connectors are properly crimped. The
connector and crimping tool are properly sized.
d. Finished castings are as shown on approved drawings and are clean and free of molding sand, cracks, blow
holes, split, and deformations. Sufficient material is allowed for machining. Casting defects have not been covered
by unauthorized repairs.
e. Machining is as shown on approved drawings. The surfaces, including mating surfaces, as applicable, are
smooth, square, and are free of burrs, sharp edges, chatter marks, and scratches or damage due to handling. Surface
finish is as shown on approved drawings, and there are no tool marks except those normally associated with the
indicated surface finish. There are no flaws exposed in the material as a result of machining.
f.
No parts are Government surplus or have been previously used or reclaimed.
g. Items including hardware (nuts, bolts, lockwashers, and so forth) are made of corrosion-resistant material
or are given a corrosion-resistant treatment as shown on the approved drawings.
h. A satisfactory varnishing process has been used. NOTE: The Government may require a coil or winding
to be cut apart to examine the extent of the varnish treatment and filling if there is a question as to the effectiveness
of varnish treatment used.
i. Bolts, nuts, set screws, and other fasteners are secured in a manner which will preclude loosening in
service. Locking devices are as shown on the approved drawings.
j. Insulation creepage and clearance distance are in accordance with approved drawings. Creepage distances
have not been achieved by cemented or butted joints.
A.2.2 Examination prior to assembly. Items to be examined prior to assembly shall be as follows:
a.
Shafts. Shafts shall be examined to determine conformance to the following:
(2) Dimensions, tolerances, keyways, fillets, shoulders, threads, and surface finishes are as shown on the
approved drawings.
(3) Eccentricity tolerances including out of round for the bearing seats, bearing shoulder, collector ring
seats, and the core seats are as shown on the approved drawings.
(4) After welding on appurtenances, shafts have been stress-relieved as shown on the approved drawings.
(5) The shaft has not been built up in any way to correct errors or reclaim material (unless specific case
basis approval has been obtained in advance).
(6) Shoulders are square as shown on the approved drawings.
Fans. Fans shall be examined to determine conformance to the following:
b.
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