HI0404316 5MM Miter Gear for Eagle, Freya, EX, SX Helicopters by Hirobo  [HI0404316]

5mm miter gear — service and maintenance

This Hirobo HI0404316 5MM miter gear is offered as a replacement part for Eagle, Freya, EX and SX helicopter model groups. It is intended for drivetrain sections requiring a right-angle gear engagement and matches the 5mm dimension noted in the part number.

Installation should concentrate on alignment and mesh rather than torque figures. Remove the worn gear, inspect nearby bearings and shafts for wear, fit the new miter gear to retain straight shaft geometry, then secure the fixing hardware. Rotate the drivetrain by hand to ensure free motion, and complete a cautious low-speed test to confirm there is no binding or excessive backlash.

As part of setup and maintenance, the miter gear affects drivetrain smoothness and vibration. Maintaining correct mesh and replacing worn bearings will reduce noise and limit premature wear; change the gear when you detect scoring, chipped teeth, or inconsistent meshing during bench evaluation.