Oil Cooler Flush

^ Tools Required:
- J 35944 Cooler Flushing Tool, Or Equivalent
- J 35944 20 Flushing Solution, Or Equivalent
- Water Supply
- Air Supply (with water and oil filter)
- Oil Drain Container 5 Gallon Pail

1. Remove the fill cap on J 35944 and fill with 0.6 liter (20-21 ounces) of J 3594-20 flushing solution.
^ Do not overfill.
^ Follow manufacturer's suggested procedures for solution handling.
2. Replace cap on J 35944 and pressurize it to 550-700 kPa (80-100 psi.).
3. Connect J 35944 to the transaxle end of the transaxle cooler pipe that feeds the BOTTOM fitting of the oil cooler.
4. Connect the discharge hose to the TOP oil cooler pipe and clip the discharge hose to oil drain container.
5. With the water valve on J 35944 in the "Off" position, connect the water supply to the tool.
6. Turn the water supply on.
7. Flush the transaxle oil by opening the water valve to the "On" position for about 10 seconds.

Important: If water does not flow through the cooler the system is completely plugged. Do not complete the flushing procedure. Replace the cooler and/or the cooler pipes as required.

8. Close the water valve and clip the discharge hose to the five gallon pail. Cover the pail with a shop towel to prevent splash.
9. Turn the water valve to the "On" position and depress the trigger to mix flushing solution into the water flow. Use the bale clip provided to hold the trigger down.
10. Flush the cooler with water and solution for 2 minutes. During this flush, attach the air supply to the air valve located on the tool for 3 to 5 seconds every 15-20 seconds. This will create a surging action to ensure complete cleaning.
11. Release the trigger and turn the water valve off.
12. Disconnect both hoses from the oil cooler pipes.
13. Reconnect the hoses to the pipes opposite the initial flush to perform a backflush.
14. Repeat Steps 9 and 10.
15. Release the trigger and allow water to rinse for one minute.
16. Turn the water valve off.
17. Attach the air supply to the air valve and dry the system out with air until no moisture is seen leaving the discharge hose.
18. Connect the cooler feed pipe to the transaxle. The cooler feed is the bottom connection at the transaxle.
19. Clip the discharge hose to the oil drain container.
20. After filling the transaxle with oil, start the engine and run for 30 seconds. This will remove any residual moisture from the oil cooler. A minimum of 2 quarts of oil should flow during the 30 second period. If oil flow is insufficient, check the oil flow by disconnecting the feed line at the cooler and observe the flow with the engine running.
^ Insufficient Flow: inspect the transaxle for causes. Inspect cooler pipes, fittings and repeat cooler flushing procedure. If the flow is still insufficient, replace the cooler.
21. Remove the discharge hose and reconnect the cooler pipe. Adjust oil level as needed.

Adjust
^ Oil level.