Tronair 14-6900-6000 Aircraft Strut Service Gauge, 0 to 600 PSI

The Tronair 14-6900-6000 is used to measure nitrogen strut pressure during landing gear servicing, inspections, and routine maintenance. Accurate strut pressure checks enable technicians to confirm proper shock strut inflation, ensuring safe ground handling and consistent landing gear performance. This gauge is commonly used as part of a nitrogen strut service setup.

A 0 to 600 PSI range supports many common aircraft strut pressure checks without requiring a high-range gauge. Using the correct pressure range improves readability and helps technicians make more accurate adjustments when servicing nitrogen struts. Tronair also cautions operators not to exceed an inlet pressure of 600 PSI when using this kit.

Tronair recommends that the pressure gauge be calibrated annually or as needed to ensure accurate readings during strut servicing. Inconsistent calibration can lead to incorrect strut inflation, which in turn affects aircraft stance, ground handling, and maintenance quality. PJi also notes that all gauges require annual calibration and provides certification documents with the gauges.

Yes! Certification documents are provided with all gauges, which support quality programs and maintenance documentation needs. The manual also includes an instrument certification notice, explaining that the calibration documentation corresponds to the actual instrument being calibrated. This is useful for maintenance teams tracking tool accuracy and calibration schedules.

No. The manual clearly states that this gauge assembly is NOT Skydrol-resistant. This matters because Skydrol is a common aviation hydraulic fluid, and accidental exposure can damage incompatible components or seals. In practice, technicians should keep this strut service gauge dedicated to nitrogen servicing and away from hydraulic fluid handling areas.

The Tronair 14-6900-6000 Strut Service Gauge is high-pressure nitrogen equipment and should be operated only by trained, qualified personnel using approved procedures. The manual warns against using the kit on low-pressure nitrogen systems, using it with oxygen or other gases, and exceeding the rated inlet pressure. These precautions help reduce risk related to stored-energy hazards and rapid gas expansion.

No. Tronair specifies that this strut service gauge is for nitrogen only and should not be used with oxygen or any other gases. Nitrogen is chemically stable and does not support combustion, which is why it’s the standard for aircraft strut servicing. Using the correct gas helps protect strut components and supports safer, more consistent maintenance procedures.

The rubber boot helps protect the gauge from bumps, drops, and general handling damage during routine maintenance. A liquid-filled gauge dampens needle vibration, making readings easier to see and helping maintain accuracy in active hangar and flight line environments. Together, these design features support more reliable pressure checks and longer service life.

The Tronair 14-6900-6000 is sold as a standalone strut service gauge, but it’s also commonly used as part of a complete nitrogen strut service kit. In most aircraft maintenance setups, the gauge is used in conjunction with compatible hoses and couplers, paired with a nitrogen service regulator, to control pressure during strut inflation and servicing. For example, many technicians utilize it in conjunction with the Tronair 14-6804-6000 Service Regulator to support clean, controlled nitrogen flow and obtain accurate pressure readings.

The manual outlines a step-by-step process that includes closing the nitrogen supply, reducing regulator pressure to a minimum, closing the air bleeder valve, and connecting hose couplings to the pressure valve and the aircraft nitrogen charging valve. It also instructs technicians to open valves in the correct order and adjust the regulator until the gauge reads the desired pressure. Following the sequence helps reduce the risk of hose whip, leakage, and inaccurate pressure settings.

The disassembly procedure includes closing the aircraft nitrogen charging valve, releasing the valve core with the hose coupling, shutting off the nitrogen supply, and using the air bleeder valve to bleed excess pressure from the lines. This controlled depressurization reduces the risk of sudden release of stored gas energy. Safe disassembly is just as important as proper setup when working with high-pressure nitrogen tools.

No. The Tronair 14-6900-6000 is not CE marked. If CE compliance is required for your facility or region, it’s best to confirm local requirements in advance and contact our team to discuss documentation and available options.