Hydraulic Systems

Located in the fluid passage of a hydraulic pump, it triggers the pump to shut down when the fluid temperature exceeds a predefined limit.

An internal leak within a hydraulic component causes the fluid to circulate continuously, generating heat and raising the fluid's temperature.

High temperatures cause the hydraulic fluid to chemically break down, becoming more acidic and potentially damaging system components.

Synthetic hydraulic fluid, though more resistant to heat, can also become highly acidic when subjected to extreme temperatures.

The typical working pressure for most hydraulic systems, though specific systems may operate at slightly different pressures.

In a normal hydraulic system, pressure should be present and a source of hydraulic fluid should be readily identifiable.

When no hydraulic services are needed, this valve ensures the pressure in the system is safely released to prevent overloading.

This pump type has a fixed displacement, meaning it delivers a constant amount of fluid per rotation regardless of pressure.

These pumps are designed to vary their displacement, allowing for a controlled change in fluid flow based on demand.

This crucial component prevents leaks from the pump shaft where it rotates within the housing.

In the event of the primary hydraulic system failure, this valve quickly switches over to the auxiliary system, ensuring continued operation.

Used to precisely control the flow rate of hydraulic fluid within the system, affecting its speed and response.

A crucial component that prioritizes the landing gear and doors' operation by ensuring they receive fluid even in the event of other system failure.

Air pressure is stored within this component to absorb sudden pressure spikes and prevent damage to the system.

This valve is activated when the hydraulic system overheats, releasing pressure to prevent further temperature escalation and damage.

This valve automatically de-pressurizes the hydraulic system when activated, often used for maintenance and safety reasons.

When flushing a hydraulic system, the same type of hydraulic fluid should be used throughout to avoid compatibility issues.

Always use the correct and same hydraulic fluid type when replenishing the system to ensure proper function and avoid problems.

During replacement of flexible pipes, use two spanners to safely hold the pipe and prevent twisting during the installation.

If an accumulator loses air pressure, the hydraulic system's pressure will fluctuate wildly, indicating a potential problem.

When the accumulator pressure drops, the automatic cut-out valve may repeatedly open and close, creating a hammering sound.

This valve ensures a vital supply of hydraulic fluid to essential functions like landing gear and brakes in the event of a major system failure.

The constant volume hydraulic system is the most common type used in aviation. It relies on an accumulator to store energy and manage pressure variations.

A pressure relief valve mechanism designed to release pressure in the hydraulic system in case of an emergency. Its presence helps prevent excessive pressure buildup and damage to the system.