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.