Aircraft Hydraulic System Purge and Leak Tester

The Aircraft Hydraulic System Purge and Leak Tester is a specialized ground support apparatus designed to ensure the integrity and optimal performance of aircraft hydraulic systems. Manufactured by Hydraulics International, Inc. (HII), this unit facilitates the detection of leaks and the purging of air and contaminants from hydraulic circuits, which is crucial for maintaining the reliability and safety of both military and commercial aircraft.​

Technical Details:

1. Leak Detection Capabilities:

   • Precision Measurement: The tester employs advanced sensors to detect and quantify even minute leaks within the hydraulic system, ensuring compliance with stringent aviation safety standards.​

   • Automated Diagnostics: Features automated diagnostic routines that systematically assess the hydraulic system, providing detailed reports on leak locations and severity.​

2. Air and Contaminant Purging:

   • High-Efficiency Flushing: Utilizes a high-flow flushing mechanism to remove air bubbles and particulate contaminants from hydraulic lines, thereby preventing issues such as cavitation and erratic system behavior.​

   • Filtration System: Incorporates multi-stage filtration to capture and eliminate impurities down to a specified micron level, ensuring the delivery of clean hydraulic fluid back into the system.​

3. Pressure Testing:

   • Variable Pressure Control: Capable of simulating a wide range of operating pressures to test the hydraulic system under various conditions, ensuring components can withstand operational stresses.​

   • Real-Time Monitoring: Equipped with digital pressure gauges and flow meters that provide real-time data, allowing operators to monitor system responses accurately during testing.​

4. Safety Features:

   • Overpressure Protection: Integrated relief valves and automatic shut-off mechanisms safeguard both the aircraft's hydraulic system and the testing unit from potential overpressure scenarios.​

   • Emergency Stop Function: An easily accessible emergency stop button enables immediate cessation of operations if anomalies are detected, enhancing safety protocols.​

5. Design and Mobility:

   • Robust Construction: Constructed with high-strength materials resistant to hydraulic fluids and environmental factors, ensuring durability in various operational conditions.​

   • Portability: Mounted on a maneuverable chassis with durable wheels, facilitating easy transport across hangar floors and maintenance areas.​

6. Compatibility:

   • Fluid Types: Compatible with a range of aviation hydraulic fluids, including MIL-PRF-83282 and MIL-PRF-5606, allowing for use across different aircraft platforms.​

   • Aircraft Models: Designed to service a broad spectrum of aircraft, from fighter jets to large transport planes, making it a versatile tool in maintenance operations.​

Applications:

• Routine Maintenance: Utilized during scheduled maintenance to ensure hydraulic systems are free from leaks and contaminants, thereby maintaining optimal performance.​

• Post-Repair Verification: Employed after hydraulic system repairs or component replacements to verify the integrity of the system before returning the aircraft to service.​

• Fluid Change Operations: Assists in the complete evacuation and replacement of hydraulic fluids, ensuring the new fluid is uncontaminated and meets operational standards.​

Technical Specifications Table:

Integrating the Aircraft Hydraulic System Purge and Leak Tester into maintenance routines significantly enhances the reliability and safety of aircraft hydraulic systems. Its advanced design and comprehensive features ensure that hydraulic circuits are maintained in optimal condition, thereby supporting the overall operational readiness of the aircraft.