Remove, Clean And Install Hydraulic Filter Flashcards
What kind of filter is a micronic filter?
A filter with a special paper element
What is a double-action pump?
A pump that delivers fluid with movement of the pump handle in both directions
Why do most engine-driven hydraulic pumps have a shear section in their drive couplings?
If the pump should seize, the shear section will break, disconnecting the pump from the engine and preventing further damage
What is the purpose of an accumulator in an aircraft hydraulic system?
The accumulator holds pressure on the hydraulic fluid in the system. The pressure is held by compressed air or nitrogen acting on the fluid through a bladder, a diaphragm, or a piston
What is the purpose of an orifice check valve in an hydraulic system?
An orifice check valve allows full flow of fluid in one direction through the valve, but restricts the flow in the opposite direction
Where are line-disconnect fittings normally located in an aircraft hydraulic system?
Normally in the lines that connect the engine-driven pump to the aircraft hydraulic system
What is a single-action hydraulic actuating cylinder?
A linear actuating cylinder that uses hydraulic fluid under pressure to move the piston in only one direction. The piston is returned by a spring
What is a sintered metal hydraulic filter?
A surface filter whose element is made of powdered metal fused under heat and pressure
What is the purpose of the differential pressure indicator on a hydraulic filter?
It indicates when the filter is clogged and fluid is bypassing the filter element
What is a cuno filtet?
An edge filter made of a stack of thin metal disks separated by thin scraper blades.
