F 250 4WD Super Duty V10-6.8L VIN Z CNG (2003)
Transmission Cooler: Initial Inspection and Diagnostic Overview
Transmission Cooling
Inspection and Verification-Automatic
CAUTION: Do not attempt to backflush and clean the Oil-To-Air (OTA) transmission fluid cooler. Install a new OTA transmission fluid cooler as
part of a transmission overhaul or exchange. Failure to follow these directions may result in transmission damage.
CAUTION: When internal wear/damage occurs in the transmission, metal particles, clutch plate material, and band material can travel into the torque
converter, the fluid cooler tubes, the in-tank; transmission fluid cooler, and the OTA transmission fluid cooler. These contaminants are a major cause
of recurring transmission concerns. To prevent future concerns, remove these contaminants from the cooling system before placing the transmission
back into use.
Visually inspect for obvious signs of mechanical damage, incorrect component installation, and system leaks. Repair as necessary.
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Install a new or remanufactured radiator when fluid is found leaking from the in-tank transmission fluid cooler.
2. Install a new OTA transmission fluid cooler if there is leakage from the fluid cooler, and always as part of a transmission overhaul or exchange. If
the fault is not visually evident, GO to Symptom Chart - Automatic Transmission.
