Rear Sun Gear & Input Drum
1. Check rear sun gear for cracks, splits, damaged spline, worn gear or journals and restricted oil passages.
2. Check rear sun gear bushing, for damage or scoring. If necessary, remove snap ring, rear sun gear from input drum.
3. Check input drum, and thrust washer for damage. Replace any damaged component.
4. Install rear sun gear and snap ring into input drum.
5. Install thrust washer onto input drum.
6. Install rear sun gear and input drum assembly into transmission case.