Component Test - Gasoline Engine Vehicles
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Transmission Fluid Cooler Leaks at Radiator
- Clean the area around the transmission fluid cooler fittings
- Verify that transmission fluid is leaking between the transmission fluid cooler and the transmission fluid cooler fitting (not the transmission fluid cooler tube fitting into the transmission fluid cooler fitting).
- Remove the radiator from the vehicle and place it on a flat surface with the transmission fluid cooler fittings facing upward. REFER to: Radiator 6.2L V8 . or REFER to: Radiator 6.8L Triton-30V - V10 .
-
NOTE: Oil-based solvents and cleaners should not be used when cleaning the radiator. Oil-based solvents and cleaners can damage the radiator end tank seals and cause leaks.
Clean the area around the transmission fluid cooler fittings so that contaminants do not enter the transmission fluid cooler when the transmission fluid cooler fittings are removed.
-
NOTE: Remove only one transmission fluid cooler fitting at a time, otherwise the transmission fluid cooler may drop into the radiator.
Remove the upper transmission fluid cooler fitting.
- Once the transmission fluid cooler fitting is removed from the transmission fluid cooler, verify that there is a gasket between the transmission fluid cooler and the inside of the radiator tank.
- If there is no gasket, install a new radiator.
- If there is a gasket, continue with this procedure.
- Inspect the transmission fluid cooler fitting threads for damage.
- If the transmission fluid cooler fitting threads are damaged, install a new radiator.
- If the transmission fluid cooler fitting threads show no sign of damage, continue with this procedure.
-
NOTE: Thread sealant or tape should never be used on the threads of the transmission fluid cooler fittings. The use of such materials will create a leak path.
Install a new O-ring on the transmission fluid cooler fitting.
- Making sure that the gasket between the transmission fluid cooler and the inside of the radiator tank is still in place, install the upper transmission fluid cooler fitting.
- Tighten to 60 Nm (44 lb-ft).
-
NOTE: Remove only one transmission fluid cooler fitting at a time, otherwise the transmission fluid cooler may drop into the radiator.
Remove the lower transmission fluid cooler fitting.
- Once the transmission fluid cooler fitting is removed from the transmission fluid cooler, verify that there is a gasket between the transmission fluid cooler and the inside of the radiator tank.
- If there is no gasket, install a new radiator.
- If there is a gasket, continue with this procedure.
- Inspect the transmission fluid cooler fitting threads for damage.
- If the transmission fluid cooler fitting threads are damaged, install a new radiator.
- If the transmission fluid cooler fitting threads show no sign of damage, continue with this procedure.
-
NOTE: Thread sealant or tape should never be used on the threads of the transmission fluid cooler fittings. The use of such materials will create a leak path.
Install a new O-ring on the transmission fluid cooler fitting.
- Making sure that the gasket between the transmission fluid cooler and the inside of the radiator tank is still in place, install the lower transmission fluid cooler fitting.
- Tighten to 60 Nm (44 lb-ft).
- Make sure that no engine coolant has entered the transmission fluid cooler. Install the radiator in the vehicle. REFER to: Radiator 6.2L V8 . or REFER to: Radiator 6.8L Triton-30V - V10 .
- Verify that both the transmission and the engine cooling system fluids are at the correct levels.