Lunar Module Subsystem Assembly and Installations

Dated December 1967, this Grumman document opens with the LM mission and a general description of the vehicle, then works through twelve subsystems in turn: ascent and descent stage structure, landing gear, electrical power, environmental control, propulsion, reaction control, crew provisions and displays, guidance/navigation/control, instrumentation, communications, and electro-explosive devices.

It closes with detailed subsystem assembly, installation, and test-flow diagrams tracing the Lunar Module through Grumman’s Bethpage plants, from raw subassemblies (aft bulkhead, docking tunnel, cabin skins) through structural buildup, equipment installation by group, proof-pressure and leak checks, cold-flow testing, and final rotate-and-clean and insulation work on both stages.