Expedition 4WD V8-4.6L SOHC VIN W (1999)
2. Remove the radiator from the vehicle following Workshop Manual procedure. Place the radiator on a flat surface so that the transmission oil
cooler fittings are facing upward. Refer to Figure 2.
3. Clean the area around the transmission oil cooler fitting. This will insure that contaminants do not enter the transmission oil cooler when the
transmission oil cooler fittings are removed.
CAUTION: 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.
4. Remove the upper transmission oil cooler fitting.
NOTE: REMOVE ONLY ONE (1) TRANSMISSION OIL COOLER FITTING AT A TIME, OTHERWISE THE COOLER MAY DROP INTO THE
RADIATOR.
5. Once the fitting is removed from the transmission oil cooler, verify that there is a gasket between the transmission oil cooler and the inside of the
radiator tank. If there is no gasket, replace the radiator. If the gasket is in place, continue to Step 6.
6. Inspect the transmission oil cooler fitting threads for damage. If the threads are damaged, replace the radiator. If the threads show no sign of
damage, continue to Step 7.
