When the new bevel gear is turning, it is loud and reverses normal
According to what you said, you may try to check whether the installation position of the 1 and two bevel gears is correct
It also causes noise. 3, check whether the production of gear meets the requirements. For reference.
The general approach is to see whether the alignment back end cone. 2, check the location of these two wheels respectively (axial and radial), if the location is not good,
