BASIC HYDRAULIC SYSTEMS AND COMPONENTS

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SUBCOURSE EDITION. AL0926 A. BASIC . HYDRAULIC SYSTEMS . AND COMPONENTS . BASIC HYDRAULIC SYSTEMS AND COMPONENTS . Subcourse Number AL 0926. EDITION A. US Army Aviation Logistics School Fort Eustis, Virginia 23604-5439. 4 Credit Hours Edition Date: September 1994. SUBCOURSE OVERVIEW. This subcourse is designed to provide instruction on the concept and operation of the BASIC COMPONENTS of the HYDRAULIC system. It also describes the various COMPONENTS of a typical HYDRAULIC system, their construction and functions, and their relationship to each other. When the term hydraulics is applied to aircraft, it means a method of transmitting power from one location to another through the use of a confined fluid. The functions performed by HYDRAULIC SYSTEMS in aircraft include assisting in flight control, extending and retracting landing gear, positioning flaps, operating hoists, raising and lowering cargo doors, and starting engines.

check valve opens as a result of the partial vacuum caused by the movement of the piston, allowing fluid to be drawn into the left chamber. At the same time, the inner check valve closes. As the piston moves to the right, the fluid in the right chamber is forced out into the system. Figure 1-4. Double-Action Hand Pump. 6 AL0926

  Valves