MIL-DTL-24784/7C(NAVY)
a.
Major unit installation.
b.
Piping, interface installation, and alignment.
c.
Coupling cold alignment.
3.7.6 Chapter n + 2 (or as applicable) - unit shop test. This chapter shall be developed to facilitate work
breakout for a complete unit that requires a unit shop test prior to shipboard installation. An approved outline for the
generic unit shall be used in determining the following unit test requirements:
a.
Test stand requirements.
b.
Unit flush.
c.
Unit shop test requirements.
3.7.7 Chapter n + 3 (or as applicable) - shipboard installation, alignment, and testing. This chapter shall specify
requirements for:
a.
Unit installation.
b.
Insulation installation.
c.
Cold alignment recheck.
d.
Piping, interface installation and alignment.
e.
System check.
f.
Coupling hot alignment.
g.
Unit break-in.
h.
FAT.
i.
Interfacing system inspection.
3.7.8 Appendices. The TRS shall provide pertinent supplementary and reference data required in the
inspection, parts replacement, testing, and final acceptance of the repairable items covered in the TRS. Each
appendix shall contain a statement delineating its purpose and application. Appendices shall be in accordance with
Appendix A of MIL-DTL-24784.
3.7.8.1 Appendix A - mandatory overhaul replacement parts list. This appendix shall contain a comprehensive
list of items which shall be replaced, regardless of observed condition (see 3.7.4.2). There shall be a separate sheet
listing the mandatory replacement parts for each unit subassembly or major subassembly component. It shall be a
tabular listing of parts similar to figure 1. The parts designated for the mandatory overhaul replacement parts list
shall be specified by the Government acquisition activity using the following considerations:
a.
Parts which are usually damaged or destroyed during equipment disassembly.
b.
Parts normally subject to accelerated wear.
c.
Parts known to be more economical to replace than inspect.
d.
Parts which have a history of high usage.
e.
Parts that have a high documented failure rate and are costly to replace between overhauls. No direct or
indirect citation of the actual failure rate of any part is allowed. Technical manuals shall not list or cite any
figures of merit for the reliability or maintainability of the equipment (or parts) at any level of indenture.
All TRS written requirements shall be met before a Class B overhaul is certified as complete. If a material ordering
guide (MOG) exists for an item being covered in the TRS, the MOG may be used to develop Appendix A.
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