The gears and bearings inside a gearbox reach a stable meshing state after a long period of operation.
If you disassemble and reassemble the gearbox frequently just for inspection purposes, any improper reassembly can cause changes to the gear meshing, as well as the bearing clearances or preload.
Although the machine may still run, issues such as overheating, vibration, and noise will all affect the service life of the gearbox.
Therefore, every disassembly is another test of the technician’s assembly skills.
Disassembling a gearbox is not difficult — the hard part is restoring it to its original state.
