Possible Points of Oil Leaks

1. Oil may leak from the transmission pan or valve body cover for the following reasons:
- The attaching bolts are not torqued correctly.
- The gasket is damaged or improperly installed.
- The oil pan or the mounting face of the valve body cover is not flat.
2. Oil may leak from the case for the following reasons:
- Servo cover porosity or O-ring damage. The multi-lip seal on the filler tube is damaged or missing.
- The filler pipe bracket is Dislocated.
- The electrical connector O-ring is damaged.
- The manual shaft seal is damaged. The oil cooler connector fittings are loose or damaged.
- The vacuum modulator O-ring is damaged.
- The axle oil seals are worn or damaged.
- The park lock out cup plug is loose.
- The line pressure pickup pipe plug is loose.
- The bottom pan or side cover gaskets are damaged.
- The casting is porous.
3. Oil may leak from the converter end for the following reasons:
- The converter seal is damaged.
^ The seal lip is cut (check converter hub for damage).
^ The bushing has been moved forward and is damaged.
^ A garter spring is missing from the seal.
- The converter is leaking from a weld area.
- A casting is porous in the case or the drive sprocket support.
- The oil seal on the turbine shaft is worn or damaged.
4. Fluid may come out from the vent pipe under the following conditions:
- Overfilled.
- If the fluid appears milky, water or coolant may be in the fluid.
- The case is porous.
- The fluid level indicator registers incorrectly.
- The drain back holes are plugged.
- The case to the modulator gasket on the channel plate is mispositioned or damaged.
- The thermal element has been set to the incorrect height.