Expedition 2WD V8-5.4L (2009)
Transmission Cooler: Component Tests and General Diagnostics
Transmission Fluid Cooler
Transmission Fluid Cooler
NOTICE: Whenever a transmission has been disassembled to install new parts, the transmission fluid cooler and transmission fluid cooler tubes
must be cleaned and backflushed. Use a torque converter/oil cooler cleaner.
NOTE: Cleaning and backflushing the transmission fluid cooling system, along with following all the normal cleaning and inspection procedures during
disassembly and reassembly, will keep contaminants from entering the transmission, causing a repeat repair.
When internal wear or damage has occurred in the transmission, metal particles, clutch plate material or band material may have been carried into the
torque converter and transmission fluid cooler. These contaminants are a major cause of recurring transmission troubles and must be removed from the
system before the transmission is put back into use.
Transmission Fluid Cooler Backflushing And Cleaning
Transmission Fluid Cooler Backflushing and Cleaning
NOTICE: Use only transmission fluid specified for this transmission. Do not use any supplemental transmission fluid additives or cleaning
agents. The use of these products could cause internal transmission components to fail; this will affect the operation of the transmission.
NOTE: Transmission fluid cooler backflushing and cleaning will be performed using the Turbo-Tank Heated Cooler Line Flusher or equivalent. Follow
the manufacturer's instructions included with the machine. Test the equipment to make sure that a vigorous fluid flow is present before proceeding.
NOTE: If the vehicle is equipped with an in-line transmission fluid filter, remove and discard the in-line filter.
1. Check and top off fluid level of the Turbo-Tank Heated Cooler Line Flusher or equivalent tank with transmission fluid.
2. Allow the fluid in the Turbo-Tank Heated Cooler Line Flusher or equivalent 15-30 minutes to heat up to 60°C (140°F) before using.
3. Install the line adapters into the transmission cooler lines.
4. Attach the Turbo-Tank Heated Cooler Line Flusher or equivalent red line to the transmission fluid cooler pressure line quick disconnect fitting.
5. Attach the Turbo-Tank Heated Cooler Line Flusher or equivalent blue line to the transmission fluid cooler return line quick disconnect fitting.
6. Follow the equipment instructions to purge the cooler lines and cooler prior to starting the flushing procedure.
7. Allow the cooling system to backflush for 10-15 minutes, then flush the cooler in a normal flow direction for an additional 10-15 minutes.
Transmission Fluid Cooler Leaks At Radiator
Transmission Cooling
Component Test
