Downloaded from https://www.everyspec.com MIL-STD-3001-4(AS) methods shall be specified for the correction of all deficiencies and conditions considered repairable within the scope of the level of maintenance to which the WP applies. Specific data shall be included to adequately describe repairs, including material specifications. 5.3.1.1.9 Assembly. a. Procedures required for assembly of component parts into assemblies, subassemblies and components of the equipment shall be included. Assembly instructions shall contain all pertinent assembly criteria, including clearances, back-lash criteria, dimensions, torque values, and similar data.
Procedures shall be included to describe required alignment, adjustment, rigging, lubrication, painting, etc. b. For major components such as engines, instructions shall cover assembly of component parts into subassemblies, sections, and modules. The use of required corrosion preventive methods, special lubricants, gasket pastes, and other such applications shall be specified. Location of piping and cabling shall be provided. Peculiar lockwiring methods and locking devices shall be emphasized. Testing requirements and methods shall be included for in-work progress testing of subassemblies during repair and assembly.
Precautions to be observed and quality assurance requirements shall be included. As required, a calculation worksheet in the form of a table shall be provided identifying critical dimensions to be recorded (see figure 2). For Service Life Limited Items, the location of part number and serial number, by specific life limited part, must be indicated (see figure 3). When a procedure (step) states "if outside of limits, go to step x," the procedure shall also direct "go to step y" if within limits. (1) Coverage shall include dimensional limits to be used for determining and maintaining proper relationship between mating parts in any particular assembly.
These limits shall include all such data as clearances, gearlash, and endplay. (2) Illustrations (see figure 4) shall be prepared when necessary. When such illustrations are used, they shall include reference numbers and tabulation of the limits instead of the data appearing in the text. Reference numbers on the illustrations shall have leaders to the points of clearance, gearlash, or endplay and shall be listed in numerical order. (3) Torque values shall be called out in the text where utilized and shall be noted as a Quality Assurance (QA) procedure/step. (4) Coordination is required for engine assembly instructions related to the quick engine change (QEC) configuration.
A reference to applicable engine buildup documentation shall be included to ensure correct engine assembly. c. For the transportation of aircraft, any assembly of the aircraft required after unloading the aircraft from the transport shall be provided. 5.3.1.1.10 Test and inspection. Procedures shall be prepared for testing and inspection during or after assembly to ensure proper assembly of the item. Correct methods of testing, procedures for tolerance checks, and procedures for inspection of distance measurements (e.g., clearance, endplay, backlash, etc.) shall be included. 5.3.1.1.11 Installation. a. Instructions shall be prepared for assemblies and repair parts.
As applicable, procedures shall be provided for pre-installation setup, alignment, adjustment, rigging and servicing, including environmental 12