Cooler Bypass Valve Assembly

Cooler Bypass Valve Assembly





Special Tool(s)

Disassembly

NOTE: The Cooler Bypass Valve (CBV) 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, install new cooler line case fittings.





2. NOTE: Damaged sealing washers will cause transmission fluid to leak at the CBV.

Remove the rubber-coated sealing washers. Inspect the sealing washers. Install new as required.





3. Inspect the sealing ends of the CBV. If the valve assembly is damaged, install a new CBV assembly.





4. Assemble the CBV and plug the converter-out-to-cooler inlet with a 13 x 1.5 mm (0.06 inch) plug.





5. Place a 0.5-inch flatwasher 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 he 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 as specified. 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. CAUTION: Failure to correctly install the new rubber-coated sealing washers will result in transmission fluid leaks.

Install new rubber-coated sealing washers.





2. Install new cooler line case fittings.