Cooler Bypass Valve Assembly

Special Tools:

Disassembly

NOTE: The cooler bypass valve needs to be thoroughly cleaned and flushed out at this time.





1. Remove and inspect the cooler line case fittings. If the cooler line case fittings are damaged replace the cooler line case fittings.

2. NOTE: Damaged sealing washers will cause transmission fluid to leak at the cooler bypass valve.





Remove the rubber-coated sealing washers. Inspect the sealing washers. Replace as required.





3. Inspect the sealing ends of the cooler bypass valve. If the valve assembly is damaged replace the coolant bypass valve assembly.





4. Assemble the cooler by-pass valve and plug the converter-out-to-cooler inlet with a 13 x 15 mm plug.





5. Place a 0.5-inch flat washer over the case converter-out fitting threads over the rubber coated sealing washer.





6. Connect the cleaner pressure line to the case converter-out fitting.

7. CAUTION: Make sure the CBV is in the solvent tank before switching on the solvent pump. Also make sure the CBV fitting is pointing downward so the solvent does not spray up out of the tank.





Place the CBV into the solvent tank.

8. CAUTION: The solvent pressure must be at least 344.75 kPa (50 psi) (minimum) to overcome the valve inside the CBV and let the solvent pass through it. Do not, however, exceed 620.55 kPa (90 psi) (maximum) solvent pressure.





Regulate the solvent pressure. Switch on the solvent pump allowing the solvent to circulate through the CBV for 5 minutes. During this time, cycle the solvent pump on and off to help dislodge contaminants.





9. Disconnect the cleaner pressure line from the case converter-out fitting. Remove the 0.5-inch washer.
10. Using 344.75 - 620.55 kPa (50 - 90 psi) of regulated compressed air, blow through the CBV until all solvent is removed.





11. Remove the plug from the CBV converter-out-to-cooler inlet.

Assembly





1. Install rubber-coated sealing washers.





2. Install the cooler line case fittings.