Cleaning

NOTE: MERCON Automatic Transmission Fluid is being replaced by MERCON V as a service fluid.

1. Raise and support the vehicle.

WARNING: THE ELECTRICAL POWER TO THE AIR SUSPENSION SYSTEM MUST BE SHUT OFF PRIOR TO HOISTING, JACKING OR TOWING AN AIR SUSPENSION VEHICLE. THIS CAN BE ACCOMPLISHED BY TURNING OFF THE AIR SUSPENSION SWITCH LOCATED IN THE RH KICK PANEL AREA. FAILURE TO DO SO MAY RESULT IN UNEXPECTED INFLATION OR DEFLATION OF THE AIR SPRINGS WHICH MAY RESULT IN SHIFTING OF THE VEHICLE DURING THESE OPERATIONS.





2. Remove the front cooler tube from the front cooler bypass fitting.





3. Remove the rear cooler tube from the rear cooler bypass fitting.





4. Backflush the system using the torque converter/oil cooler cleaner by connecting two rubber hoses from the cleaner to the transmission end of the transmission fluid cooler tubes.
(1) Attach the cleaner tank pressure line to the transmission fluid cooler return tube (rear tube on transmission).
(2) Attach the cleaner tank return hose to the fluid cooler inlet tube (front tube on transmission).





5. Turn on the solvent pump and allow the solvent to circulate for a minimum of five minutes.

NOTE: Cycle the pump switch on and off to help dislodge contaminants in the cooling system.

6. Switch off the solvent pump.





7. Disconnect the solvent pressure hose from the transmission fluid cooler return tube.





8. Apply compressed air to the transmission fluid cooler return tube until all the solvent is removed.





9. Remove the rubber hose from the fluid cooler inlet tube.





10. Connect the transmission fluid cooler tubes.
11. Lower the vehicle.

NOTE: If equipped with air suspension, reactivate the system by turning on the air suspension system switch.

12. Fill transmission fluid to the specified level with Motorcraft MERCON or MERCON V Automatic Transmission or equivalent meeting Ford Specifications. Check for proper transmission operation.