Gear Tooth Contact Inspection

Fig. 10 Gear Tooth Contact Inspection:

1. Ensure that ring gear is clean and free from oil, then coat coast and drive face of each ring gear tooth with suitable marking compound.
2. Brake ring gear to load gears, then turn pinion in order to rotate ring gear one full revolution in each direction. Satisfactory contact pattern cannot be obtained unless gears are loaded. Excessive rotation of gears is not recommended.
3. Inspect tooth contact pattern referring to Fig. 10, and correct assembly adjustments, as needed to obtain correct pattern.
4. Clean marking compound from gears.