F 350 4WD Super Duty V10-6.8L VIN Z CNG (2003)
4. Using the special tool, disconnect the fluid cooler tubes from the fluid cooler.
5. NOTE: If Cooler Bypass Valve (CBV) assembly removal is necessary, refer to Cooler Bypass Valve.
Remove the fluid cooler tube from the front cooler line case fitting.
6. Remove the fluid cooler tube from the rear cooler line case fitting.