Automatic Transmission Oil Cooler Flushing and Flow Test

Tools Required

• J 35944-22  Cooler Flushing Fluid. See Special Tools .
• SA9165T  Oil Cooler Line Flusher

IMPORTANT: This procedure should be performed before installing the transaxle.
1. Inspect the equipment for wear and cracks before using it. Replace any worn or cracked components.
2. Using the measuring cup, fill the SA9165T  with 0.7 oz (21 oz), approximately 2/3 full of J 35944-22  . See Special Tools . Do not substitute with any other fluid. Follow the handling procedure on the fluid container.
3. Secure the flusher filler cap, and pressurize the flusher with compressed air to 550-829 kPa (5.6-8.45 kgf/cm, 80-120 psi). The air line should be equipped with a water trap to ensure a dry air system.
4. Hang the flusher under the vehicle.
5. Attach the flusher discharge hose to the return line of the ATF cooler using a clamp.
6. Connect the drain hose to the inlet line on the ATF cooler using a clamp. Securely clamp the opposite end of the drain hose to a bucket or floor drain.
7. With the water and air valves off, attach the water and air supplies to the flusher. Use hot water, if available.
8. Turn on the water valve for 10 seconds. If water does not flow through the cooler, it is completely plugged, cannot be flushed, and must be replaced.
9. Depress the trigger to mix the flushing fluid into the water flow. Use the wire clip to hold the trigger down.
10. While flushing with the water and flushing fluid for 2 minutes, turn the air valve on for 5 seconds every 15-20 seconds to create a surging action.

    Specification:  Maximum air pressure: 845 kPa (8.45 kgf/cm, 120 psi)

11. Turn the water valve off. Release the trigger, then reverse the hoses to the cooler so you can flush in the opposite direction. Repeat steps 8-10.
12. Release the trigger, and rinse the cooler with water for 1 minute.
13. Turn the water valve and the water supply off.
14. Turn the air valve on for 2 minutes, or until no moisture is visible leaving the drain hose. Residual moisture in the cooler or lines can damage the transaxle.
15. Remove the flusher from the cooler line. Attach the drain hose to an ATF container.
16. Install the transaxle, and leave the drain hose attached to the cooler line.
17. Ensure the transaxle is in position. Fill the transaxle with ATF, and run the engine for 30 seconds or until approximately 32 oz (1 qt) is discharged.
18. Remove the drain hose, and connect the cooler return hose to the transaxle.
19. Fill the transaxle with ATF, to the proper level.