Hydraulic Components Block 8

Why is special, stringent care required when handling aircraft hydraulic fluid?

• To ensure it stays free from contamination

• To make it more efficient

• To reduce costs

• To increase its volume

During which type of aircraft maintenance checks are samples from aircraft hydraulic systems taken to check contamination?

• A) A and B checks

• B) C and D checks

• C) E and F checks

• D) G and H checks

What is a common misconception about new oil according to the passage?

• It is always clean.

• It is always dirty.

• It is always expensive.

• It is always cheap.

By the time they reach your system, fluids are almost certainly contaminated with which of the following?

• Metal and rubber particles

• Water and oil

• Nuts and bolts

• Plastic and glass

What is one of the major entry points for contaminants in a hydraulic system?

• Reservoir vent ports (breathers)

• Power unit or system access plates

• Components left open during maintenance

• Cylinder seals

What is one of the major entry points for contaminants in a hydraulic system?

• Sight glass

• Power unit flexible lines

• Tubing

• Oleo strut seals

Identify the increased source of contamination in hydraulic systems.

• In pumps & motors

• Reservoir breathers filler caps

• hydraulic components

• Corrosion

What is the nature of hydraulic fluid compared to air?

• A) Compressible

• B) Incompressible

• C) Elastic

• D) Rigid

Fill in the blank: Hydraulic pressure acts at right angles to the _______ walls of the container.

• enclosing inner surface

• outer surface

• Bottom surface

• top surface

What is the function of the hydraulic fluid in a simple pump?

• To provide lubrication to the pump components

• To transfer energy and create pressure

• To cool down the pump system

• To act as a sealant for the pump