Tronair 02-7861-9100 – 12-Ton Axle Jack

The four-stage ram design allows the Tronair 02-7861-9100 axle jack to achieve a wide lifting range while maintaining a very low closed height. This is especially beneficial for aircraft like the AW139 and MH-139A, where ground clearance can be limited. The multi-stage extension provides smooth, controlled lifting across each stage. This design improves versatility and precision when positioning the jack under aircraft landing gear.

The hi/low manual pump allows operators to quickly raise the jack at low resistance, then switch to a higher-pressure mode for lifting heavier loads. This dual-function capability reduces the number of pump strokes required during initial setup. It also provides greater control as the load increases. The result is faster, more efficient aircraft lifting with less operator fatigue.

A low closed height allows the jack to fit under aircraft with minimal ground clearance without requiring additional lifting aids. This is particularly important for helicopters and certain fixed-wing aircraft with low landing gear profiles. The 02-7861-9100’s compact starting height improves accessibility in tight spaces. It also enhances safety by reducing the need for unstable positioning adjustments.

Operators should always place the jack on a hard, level surface and ensure the jack pad is properly aligned with the aircraft lifting point. The manual emphasizes opening the reservoir vent screw before operation to prevent pressure issues. Hands should be kept clear of the jack pad during lifting to avoid injury. Following proper procedures ensures safe, controlled aircraft maintenance operations.

Maintaining clean MIL-PRF-5606 hydraulic fluid and proper fluid levels is essential for consistent jack performance. The manual recommends checking fluid levels with the ram fully collapsed and replacing contaminated fluid as needed. Proper maintenance helps prevent erratic movement, pressure loss, and internal wear. This ensures reliable lifting capability and extends the lifespan of the axle jack.

Routine maintenance includes inspecting seals, replacing worn O-rings, and flushing old hydraulic fluid from the system. The manual also recommends keeping the work area clean and avoiding damage to critical sealing surfaces during servicing. Periodic inspection helps identify issues before they lead to failure. These practices support long-term durability and dependable performance.

Air trapped in the hydraulic system can cause inconsistent lifting or erratic ram movement. The manual outlines a simple bleeding process that involves extending the jack, inverting it, and collapsing it to remove trapped air. Removing air ensures smooth, predictable operation. Proper bleeding helps maintain full lifting capacity and system efficiency.

Proper operator training is essential to ensure safe and effective use of the axle jack. The manual states that employers are responsible for providing training that covers correct operation and safety procedures. Trained personnel are better equipped to identify hazards and operate the jack correctly. This reduces the risk of accidents and equipment misuse.

Annual load testing verifies that the axle jack can safely lift its rated capacity plus a small safety margin. The manual recommends testing at up to 110% of rated capacity under controlled conditions. This helps identify potential performance issues before they impact real-world operations. Regular testing ensures continued compliance with safety standards and reliable performance.