Possible Leak Points
Possible Points of Fluid LeaksTransmission Oil Pan
^ Incorrectly tightened fluid pan bolts
^ Improperly installed or damaged fluid pan gasket
^ Damaged fluid pan or mounting face
^ Incorrect fluid pan gasket
^ Fluid Drain Plug
Case Leak
^ Fluid Fill Plug
^ Extension Housing
^ Wiring harness O-ring seal
^ Damaged manual shaft seal
^ Loose or damaged fluid cooler line seals fittings
^ Worn or damaged propeller shaft flange seal
^ Loose line pressure test plug
^ Porous casting
^ Fluid fill plug
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
^ Overfilled system
^ Water or coolant in the fluid. The fluid will appear milky
^ Transmission case porous
^ Plugged vent
^ Drain-back holes plugged
^ Mispositioned oil pump to case gasket, if equipped
Leak Inspection Points
1 - Torque Converter Assembly
2 - Fluid Cooler Pipe Connectors
4 - Torque Converter Housing Fluid Seal Assembly
24 - Automatic Transmission Case Assembly
25 - Case Extension Gasket
29 - Prop Shaft Flange Seal
36 - Transmission Level Hole Plug
40 - Transmission Pressure Test Plug
56 - Automatic Transmission Wiring Harness O-ring Seal
60 - Automatic Transmission Fluid Pan Gasket
63 - Automatic Transmission Fluid Drain Plug
229 - Torque Converter Housing Seal
243 - Transmission Vent Assembly
605 - Manual Shift Shaft Seal
614 - Cup Plug