Size (CM): 42.5*42.5*19

Weright (KG): 9.6

Overview
The 856A3097G03 is a specialized core rotor locking and locating tool designed specifically for the CFM56 engine series. This essential piece of Ground Support Equipment (GSE) is used to mechanically secure the high-pressure compressor (HPC) and turbine (HPT) rotor assembly. By providing a rigid locking interface, the 856A3097G03 ensures that the engine's core remains stationary during critical maintenance phases, such as module separation, installation, or off-wing transport, effectively safeguarding the engine's internal hardware from unintended rotation.

Key Points
Positive Mechanical Locking: Delivers a zero-slip connection to the rotor shaft, ensuring total stability during  maintenance tasks.

Rotor Protection: Specifically engineered to prevent "clashing" or surface friction between rotating blades and stationary vanes while the engine is being handled.

Heavy-Duty Construction: Built from high-strength, heat-treated alloy steel to withstand the significant torque loads of the engine's core assembly.

Safety-First Interface: Designed with technician-friendly ergonomics and high-visibility coatings (where required) to ensure the tool is properly engaged and subsequently removed before operation.

Application
Module Mating & Demating: A mandatory tool for securing the core while separating the fan module or the low-pressure turbine (LPT).

Engine Transport & Shipping: Used to lock the rotors in place to prevent "windmilling" or vibration-induced damage during transit.

Heavy Maintenance (MRO): An essential inventory item for facilities performing C-Checks and D-Checks on CFM56-powered Boeing 737 and Airbus A320 aircraft.