Possible Points of Fluid Leaks
Transmission Oil Pan
- Incorrectly tightened oil pan bolts
- Improperly installed or damaged oil pan gasket
- Damaged oil pan or mounting face
- Incorrect oil pan gasket
Case Leak
- Damaged vehicle speed sensor seal
- Damaged manual shaft seal
- Loose or damaged oil cooler connector fittings
- Worn or damaged propeller shaft oil seal
- Loose line pressure pipe plug
- Porous casting warped torque converter housing
Leak at the Torque Converter End
- Converter leak in the weld area
- Converter seal lip cut. Check the converter hub for damage
- Converter seal bushing moved forward and damaged
- Converter seal garter spring missing from the seal
- Porous casting of the transmission case or the oil pump
Leak at the Vent Pipe
- Overfilled system
- Water or coolant in the fluid; The fluid will appear milky
- Transmission case porous
- Incorrect fluid level indicator
- Plugged vent
- Drain-back holes plugged
- Mispositioned oil pump to case gasket, if equipped
Leak at the Case Extension
- Output shaft seal assembly - located in the case
- Output shaft seal assembly - located in the case extension
| Callout | Component Name |
|---|---|
| 1 | Automatic Transmission Electrical Connector Passage Sleeve |
| 2 | Line Pressure Test Hole Plug |
| 3 | Converter Housing to Case Joint |
| 4 | Trans Fluid Cooler Pipe Fitting Seals |
| 5 | Manual Shift Shaft Seal |
| 6 | Automatic Transmission Vent Pipe |
| 7 | Fluid Fill Tube Plug Assembly |
| 8 | Transmission Case Assembly |
| 9 | Output Shaft Seal Assembly - Case |
| 10 | Output Shaft Seal Assembly - Case Extension |
| 11 | A/Trans Fluid Pan Gasket |
| 12 | Torque Converter Fluid Seal Assembly |
| 13 | Torque Converter Assembly |
| 14 | Trans Oil Level Check Plug |
| 15 | Case Extension to Case Joint |