The main gears with different gear ratios are installed on the car. On the driven gear, the number of teeth of the driven 1 and driving 2 gears is stamped.
Attention! The final drive gears at the factory are selected in pairs according to noise and contact patch. Therefore, when replacing the driven gear, also replace the output shaft with the drive gear: they are sold in pairs. To check, count the number of teeth on the drive gear on the output shaft.
1. Inspect the working surfaces of the satellites, the axis of the satellites, side gears and the spherical surfaces of the differential housing in contact with them. Eliminate small irregularities with fine-grained sandpaper. Replace parts with significant defects.
2. Inspect the bearing seats on the differential housing. At considerable development of these places replace the case of differential. In the presence of pitting (shells) on treadmills and rolling elements, traces of indentation of rolling elements on treadmills or damage to cages, bearings must be replaced.
3. Check the condition of the gearbox driven gear. If there are chips, chipping and significant tooth wear, replace the gear.