MAINTAINABILITY DESIGN TECHNIQUES METRIC - AcqNotes.com

Downloaded from http://www.everyspec.com on 2011-10-29T14:56:01.DOD-HDBK-791(AM)TABLE 6-4 (cont’d)20. Are schematics and instructions attached directly to, or adjacent to, the chassis for all units that may requiretroubleshooting?21. Do display labels on component covers provided relevant information concerning the electrical, pneumatic, orhydraulic characteristics of the part?22. When selector switches may have to be used with a cover panel off, is a duplicate switch-position label provided onthe internal unit so the technician does not have to refer to a label on the case or cover panel?23. Are displays labeled so they correlate with notations found in system diagrams, in technical manuals, or in relatedliterature?24. Do display schematics on separate assemblies show clearly any relationships to other or interconnecting schematics?25. Are color codes for identifying test points or tracing wire or lines easily identifiable under all conditions ofillumination, and are they resistant to damage or wear?26. Is functional organization of displays and controls emphasized by use of such techniques as color coding. markedoutline, symmetry of grouping, and/or differential plane of mounting?27. Are all potted parts labeled with current, voltage. impedance, or terminal information?28. Are lubrication points properly labeled?29. Are labels used to indicate the direction of movement of controls. especially where lack of such knowledge may resultin damage to equipment?30. Are labels used to indicate type of fluids at fill or service points and on lines?31. Are labels on panels, components, and subassemblies differentiated in terms of letter size to indicate the hierarchy?6-18