Before inspection, the parts of the gearbox are thoroughly washed, and then they are checked for damage on the gear teeth of the main gear and whether the contact spots on the working surfaces of the teeth are correctly located. If the teeth are damaged, the parts are replaced with new ones. If the engagement is incorrect, the cause is determined.
They inspect the satellites and the surface of their axis, the necks of the gears of the axle shafts and their mounting holes in the differential box. Minor damage is eliminated by grinding with sandpaper with a grain size of 10 to M40, and in case of serious damage, the parts are replaced with new ones.
Check the condition of the surface of the bearing washers of the gears of the semiaxes. If even minor damage is found, they are replaced. When replacing washers with new ones, they are selected by thickness.
Inspect the bearings of the drive gear and differential box. They must be wear-free, with smooth working surfaces. At the slightest doubt about their performance, the bearings are replaced. Poor bearing condition can cause noise and seize teeth.
Check if there are any deformations or cracks on the crankcase and differential box. If necessary, replace them with new ones.