91-536 is a specialized aircraft landing gear wheel bearing press tool, engineered to AS9100D aerospace quality standards and SAE AS4903 specifications, designed for maintenance of Boeing 737 NG/MAX and Airbus A320 family main landing gear assemblies during MRO operations.

Fabricated from heat-treated aerospace-grade steel with a black oxide finish for corrosion resistance and durability, it features a hydraulic-driven press mechanism with a 0–150 kN force range and precision alignment guides to prevent bearing damage during installation/removal. Weighing 8.7 kg and measuring 420mm×180mm×150mm, it operates at -20°C to 80°C and includes quick-connect hydraulic fittings compatible with standard ground support units. Compliant with FAA Part 145 and EASA CS-25 regulations, this tool ensures secure, damage-free bearing servicing, preserving landing gear rotational integrity and operational safety for narrow-body commercial fleets.