Basic Aircraft Hydraulic Power System And Introduction To Hydraulic Troubleshooting Flashcards
Five basic components for any hydraulic system
keyword sharp. Selector valve, hydraulic lines, actuating unit, reservoir, pump
What is the purpose of a hydraulic power system
The purpose of a hydraulic power system is to supply a controlled filtered flow of fluid under pressure to the hydraulic systems in the aircraft
What are two types of power systems
The primary flight control hydraulic system and the utility hydraulic system
What does the primary flight control system supply
The primary flight control system supplies fluid to the primary flight controls only
What does the utility system supply fluid to
To all subsystems including the primary flight controls
All Navy aircraft hydraulic systems are serviced with what
With a clean filtered MIL – PRF – 83282 hydraulic fluid
What are the authorized servicing equipment for hydraulic fluid
The hydraulic fluid servicing unit and the hydraulic test stand
The flight control power system supplies pressure flow to the way
The elevator, the ailerons, and the rudder
The utility power system supplies pressure flow to the what
Back up for flight controls. Arresting gear. Wing flaps. Wing fold. Landing gear. Speed brakes
What are the essential components of the flight control hydraulic system
The reservoir, the reservoir relief valve, the pump, the filters, the pressure indicating circuit, the check valves, the power system relief valve, the accumulator
What does the reservoir do
Maintains a supply of fluid for the hydraulic system
What does the reservoir relief valve do
It protects the reservoir from damage due to excessive pressure
What does the pump do
It creates a flow fluid
What do filters do
Filter particulate contaminants from the system hydraulic fluid
What does the pressure indicating circuit do
Monitor system pressure during operation
What do check valves do
Prevent backflow in the system from acting against the pump and aid in servicing the reservoir
What does the power system relief valve do
Protects the system from damage caused by excessive pressure
What does the accumulator do
Stores hydraulic fluid under pressure for normal and emergency use
Explain the operations of the hydraulic system
The reservoir supplies fluid through the suction or supply line to the pump. The pump delivers a flow of fluid under pressure through the filter to the subsystems of upon demand. Returning fluid passes through the check valve and filter before entering the reservoir. The flight and utility system relief valves protect the system by relieving excessive pressure; pressure fluctuations in the systems are monitored via the pressure gauges in the cockpit.
Never pressurize a system until when
Until a thorough visual inspection has been performed and all control switches and handles are in the proper position
Never attempt to disconnect until when
Until you are sure which unit or system the line is connected to and all pressure has been bled from the system
Always ensure there are no objects in the path of movable surfaces and
Be sure to always have safetymen posted
Check the ______ for any safety notes cautions or warnings and ensure the hydraulic system is properly serviced prior to operating
Maintenance instruction manual or Mims
Troubleshooters are responsible for quickly identifying any deviation from normal system operation in order to bring the system once more to a safe normal operational status through the use of a standard _______
Logical approach
