Tronair 53J6268 – Columbus Jack 30-Ton Tripod Jack

The Columbus Jack 53J6268 is a 30-ton variable-height tripod jack used for lifting aircraft during maintenance or inspection. It features a hydraulic lift unit, steel tripod structure, and manual hand pump, making it ideal for field and hangar operations. The five-position leg extensions allow operators to adapt the jack to multiple aircraft types and service conditions.

This tripod jack’s adjustable leg extensions offer five different height ranges, from 55” (140 cm) minimum to 182” (462 cm) maximum with the appropriate kit. This flexibility enables technicians to safely support aircraft of varying sizes and ground clearances. Each leg kit – numbered 1 through 5 – provides specific reach and stability ratios suited to different aircraft configurations.

The jack includes an automatic safety bypass valve that prevents the unit from lifting loads exceeding its 30-ton capacity, protecting both equipment and operators. Additionally, its tripod geometry enhances stability, while the hydraulic system incorporates internal check valves to maintain load control. Proper training and pre-operation checks further ensure safe, controlled lifting operations.

Before use, ensure the jack is positioned on a flat, stable surface and the ground area beneath each leg is clean and dry. Extend the legs evenly, adjust the height as required using the designated leg extension kit, and engage the wheel locks if equipped. Always align the hydraulic ram directly beneath the aircraft’s jacking point and confirm that the safety valve and release handle are functioning before lifting.

Each extension kit – numbered from Kit 1 to Kit 5 – offers specific height ranges and tripod radii, with taller kits providing greater reach and wider bases. For instance, Kit 1 supports heights up to 128” with a 31” radius, while Kit 5 reaches 182” with a 60” radius. Selection depends on aircraft height and required lift clearance, as listed in the maintenance and extension table.

Operators should never exceed the rated 30-ton capacity or use the jack on uneven or contaminated surfaces. Personnel must remain clear of the jack’s vertical line of action while lifting or lowering. It’s also critical to verify that the release valve is fully closed before pumping, as premature release could cause uncontrolled descent or equipment strain.

Routine maintenance includes checking for hydraulic leaks, cleaning rams and seals, and maintaining the fluid level 0.5” to 1” below the fill port when retracted. Use only aviation-grade hydraulic fluid such as MIL-PRF-5606 or equivalent, and keep fittings clean to prevent contamination. A periodic pressure check should confirm that the unit holds its rated load for at least three minutes without noticeable leakage.

Columbus Jack offers two primary maintenance kits: the SKTES3-2 Seal Kit for hydraulic resealing and the TES3-2 Repair Kit for more comprehensive service needs. Extension kits are also available individually (53J6268/-10E1 through -10E4) or as a full set. These OEM parts ensure precise fit and maintain the equipment’s warranty and reliability.

When not in service, store the jack in a dry, clean area with the hydraulic ram fully retracted. Protect it from moisture, dust, and exposure to Skydrol-type fluids, which can damage seals and paint. Covering the unit or crating it helps prevent corrosion and mechanical wear during storage.

With proper use and maintenance, the 53J6268 tripod jack can remain serviceable for many years, even under frequent operational conditions. Regular inspection, cleaning, and fluid maintenance are key to preventing premature failure. Following Columbus Jack’s factory maintenance schedule extends its reliability and ensures compliance with aviation ground support standards.

The Columbus Jack 53J6268 is backed by a 12-month limited warranty against manufacturing defects in materials or workmanship. Warranty claims require proof of proper operation and maintenance, and non-OEM modifications or misuse will void coverage. The company also offers technical support and part assistance through authorized service centers.