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Home >> Ford >> 2002 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2913 (Automatic Transmission 5R110W (TORQSHIFT(R)) -- F450-F550 Super Duty) >> Diagnosis & Testing >> Transmission Fluid Cooler >> Transmission Fluid Cooler Flow Test

Transmission Fluid Cooler Flow Test

WARNING: This page is about a different car, the 2011 Ford F550 Super Duty and 2011 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The transmission linkage/cable adjustment, transmission fluid level and transmission line pressure must be within specification before carrying out this test. Refer to Check Transmission Fluid Level and Condition under Preliminary Inspection  in this service information. Refer to Line Pressure Test under Special Testing Procedures  in this service information. For shift linkage/cable adjustment procedures, refer to AUTOMATIC TRANSMISSION EXTERNAL CONTROLS article.
  1. Remove the transmission fluid level indicator from the transmission fluid filler tube.
  2. Place a funnel in the transmission fluid filler tube.
  3. Raise and support the vehicle.
  4. Disconnect the transmission fluid cooler return tube (rear-fitting) from the transmission case.
  5. Install a suitable plug into the rear case fitting.
  6. Connect one end of a hose to the transmission fluid cooler return tube and route the other end of the hose up to a point where it can be inserted into the funnel at the transmission fluid filler tube.
  7. Remove the supports and lower the vehicle.
  8. Insert the end of the hose into the funnel.
  9. Start the engine and run at idle with the transmission in NEUTRAL.
  10. Once a steady flow of transmission fluid (without air bubbles) is observed, remove the hose from the funnel and place the hose in a measuring container for 15 seconds. After 15 seconds, place the hose back into the funnel and turn the engine off. Measure the amount of transmission fluid in the container.
    TRANSMISSION FLUID FLOW

    Temperature Flow
    44°C (111°F) 236.6 ml (8 oz) 15 sec
    78°C (172°F) 473.2 ml (16 oz) 15 sec
    82°C (180°F) and up 1893 ml (64 oz) 15 sec

    There is a temperature valve in the pump. Transmission fluid cooler flow rates vary according to automatic transmission fluid temperature. The use of a scan tool determines the actual transmission fluid temperature. If adequate flow is observed into the container, the test is now complete.

  11. If adequate flow is not observed, turn off the engine. Disconnect the hose from the transmission fluid cooler return tube (transmission inlet).
  12. Disconnect the transmission fluid cooler tube from the front case fitting and connect the hose to the case fitting (converter out) and repeat Steps 8, 9 and 10.
  13. If adequate flow is not observed from the transmission, look for a plugged or crushed transmission fluid cooler tube, plugged remote filter orifice and/or transmission fluid cooler. Refer to AUTOMATIC TRANSMISSION COOLER article for diagnosis of the transmission fluid cooler.
  14. If adequate flow is still not observed, repair or installation of a new pump and/or torque converter may be required.

For the installation of new transmission fluid cooler tubes, refer to AUTOMATIC TRANSMISSION COOLER article.

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