MIL-DTL-81218C(AS)
3.5.14.5 Assembly. These 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 shall be provided identifying critical dimensions
to be recorded. For Service Life Limited Items, the location of part number and serial number, by
specific life limited part, shall be indicated. 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.
3.5.14.5.1 Dimensional limits and torque values. Coverage shall include 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. Illustrations 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. Torque values shall be called out in the text where utilized and shall be noted as
a quality assurance procedure/step.
3.5.14.6 Local manufacture items. Information required for the fabrication of items source
coded "local manufacture" (MF, MG, MH) shall be included unless the manufacture of the item is
obvious. Only those items listed in the applicable IPB shall be considered. The data shall include
identification of material required.
3.5.15 Engine maintenance. WPs shall be prepared for each engine system (such as fuel,
lubrication, and electrical) accessory. Procedures for removing and installing the accessories
from/to an assembled basic engine shall be included. The coverage shall include instructions for
inspection, lubrication, adjustment, testing, troubleshooting, and minor repair. For accessories
having separate maintenance manuals, reference shall be made to applicable manual numbers and
titles.
3.5.16 Support equipment maintenance. When separate support equipment maintenance
manuals or maintenance requirements cards (MRC) are not procured for peculiar support
equipment furnished by the preparing activity, maintenance instructions for such equipment shall
be included in a separate WP. Instructions for required fabrication of peculiar tools, when such
fabrication is approved by the requiring activity, shall be included. Concise step by step
procedures shall be included for proper care and fabrication of support equipment while in and
out of service. These procedures shall cover instructions for storage, preventive maintenance,
lubrication, operating checks and adjustments. End items of support equipment coded as
technically non-repairable shall be included but shall be supported by an illustration and parts list
only.
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