Engine maintenance tool 856A3780G03

The 856A3780G03 Bearing Fixture is an ultra-reliable, precision-engineered aviation maintenance tool. Manufactured strictly to AS9100D aerospace standards and meeting the stringent tooling compliance requirements of FAA/EASA certified MRO facilities, this specialized fixture is dedicated to the safe, efficient extraction and installation of bearings within the engine's Accessory Gearbox (AGB) and Transfer Gearbox (TGB). Precision & Safety in Gearbox MRO The AGB and TGB are the highly complex mechanical hearts that drive the engine’s critical accessories, operating under extreme RPMs and dynamic loads. The bearings supporting these gear trains are seated with extremely tight interference fits. Utilizing generic pullers or presses can easily distort the bearing races, score the expensive magnesium/aluminum gearbox housings, or misalign the shafts. The 856A3780G03 tool mitigates these risks entirely. It provides a flawless, custom-profiled mechanical interface that applies perfectly parallel axial force. This ensures bearings are smoothly seated or extracted, safeguarding the geometrical integrity of the entire gearbox assembly. Key Features & Benefits • Flawless Bearing Handling: Delivers perfectly aligned push/pull forces, eliminating the risk of micro-fractures, galling, or housing distortion during MRO procedures. • AS9100D Manufacturing Quality: Built from premium aerospace-grade alloys, mirroring the structural integrity and reliability of actual flight hardware for zero-defect tooling. • AGB/TGB Specific Geometry: Custom-designed to navigate the complex internal architecture of engine gearboxes, accessing deeply recessed bearing bores with ease.