 |
|||
|
|
|||
| ||||||||||
|
|  MIL-D-63303B(AR)
3.8.9 Gears. Gear assemblies shall be properly aligned and
meshed and shall be operable without interference tight spots,
loose spots, or other irregularities that could cause unsatisfactory
operation. Where required for accurate adjustments, gear assemblies
shall be free from excessive backlash as required by the pertinent
drawings or specifications.
3.8.10 Metal fabrication. Metal used in the fabrication of the
dispenser shall provide original quality surface finish and shall be
free from erosion, kinks and sharp bends. Metal having eroded
surface is not acceptable. The forming of the material shall be
done by methods that will not cause damage to the metal. All bends
of a major character shall be made with metal dies or fixtures to
insure uniformity of size and shape. Straightening of material
before or after welding will not be done by methods that will cause
weakening or injury to the dispenser. External surfaces and burned
surfaces of flame-cut material shall be free of burrs, sharp edges
and corners, except when sharp edges or corners are required or
where they are detrimental to safety. Specified corners shall be
square and truer and all sharp edges and burrs shall be removed.
Shearing, punching, and chipping shall be done uniformly, neatly and
accurately. Flame cutting, using tips suitable for the thickness of
the metal may be employed instead of shearing and sawing.
precautions shall be taken to avoid overheating of the metal.
Heated metal shall be allowed to cool slowly, except where heat
treatment is required. The burned surfaces of flame-cut material
shall be free of burrs, slag, and sharp edges.
3.8.11 Castinqs and forgings. All parts, components, and
assemblies of the dispenser including castings, forgings, molded
parts, stampings, seals, and machined surfaces, shall be sound,
clean and free from patching, misplaced coring, warping, sand, dirt,
fins, pits, sprues, scale, flux and other harmful extraneous
material. External surfaces shall be free of burrs, sharp edges,
and corners except when sharp edges or corners are required. Repair
shall be limited to procedures which do not reduce mechanical
properties or affect function. Castings with fastener holes shall
provide for correct seating of fasteners such as bolt, lockwasher
and nut assemblies and capscrews.
3.8.12 Mounting of parts. Parts, or hardware shall be
assembled and secured or mounted in the specified manner to
satisfactorily accomplish the purpose for which intended, and shall,
wherever practicable be so mounted that values and part numbers
containing values are visible. The use of automatic insertion
equipment is an example where control of part visibility and
-.
orientation may not be practicable. Terminal designations of
transformers, inductors, relays, etc. shall be visible to facilitate
repair. Electronic equipment having missing, inoperative,
defective, bent, broken, or otherwise damaged parts will not be
acceptable.
19
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals