Downloaded from https://www.everyspec.com MIL-STD-1808B SYSTEM SUB-SYSTEM TITLE DEFINITION 29 HYDRAULIC POWER The subsystem components of the system that furnish hydraulic fluid under pressure to a common point (manifold) for redistribution to other defined systems. Includes pumps, regulators, lines, valves, etc. 00 GENERAL 10 MAIN The portion of the system used to store and deliver hydraulic fluid to using systems. Includes tanks, accumulators, valves, pumps, levers, switches, cables, plumbing, wiring, external connectors, etc. Does not include using system supply valves.
20 AUXILIARY The portion of the system classified as auxiliary, emergency, or standby, and used to supplement or take the place of the main hydraulic system. Includes tanks and accumulators separate from the main system, hand pumps, auxiliary pumps, ram air turbine, valves, plumbing, wiring, etc. 30 INDICATION The portion of the system used to indicate the quantity, temperature, and pressure of the hydraulic fluid. Includes transmitters, indicators, wiring, warning systems, etc. 34