Cooler Bypass Valve

Cooler Bypass Valve

Removal
1. Position the vehicle on a hoist. Place in NEUTRAL.





2. Remove the front cooler tube from the front Cooler Bypass Valve (CBV) fitting.





3. Remove the rear cooler tube from the rear CBV fitting.





4. NOTE: The rubber-coated sealing washers can fall off during removal of the front CBV bolt cooler line case fitting.

Remove the front CBV bolt cooler case fitting.





5. NOTE: The rubber-coated sealing washers can fall off during removal of the rear CBV bolt cooler line case fitting.

Remove the rear CBV bolt cooler line case fitting.
6. Remove, clean and flush the CBV.

Installation





1. CAUTION: Failure to correctly install the new rubber-coated sealing washers will result in transmission fluid leaks.

Install the new rubber-coated sealing washers and the new cooler line case fittings.
1 Install one rubber-coated sealing washer on each cooler line case fitting.
2 Install both cooler line case fittings into their respective ends of the CBV assembly.
3 Install one rubber-coated sealing washer on each cooler line case fitting.





2. CAUTION: Make sure the Cooler Bypass Valve (CBV) is correctly backflushed. Use dry compressed air to remove solvent.

CAUTION: If the cooler line case fitting is overtightened, the rubber-coated sealing washers and/or cooler line case fittings can be damaged, causing a transmission fluid leak.

NOTE: The CBV has a check ball in the rear fitting and will only allow flow in one direction. Make sure check ball moves freely.

NOTE: Align the two rubber-coated sealing washers while assembling the rear cooler line case fitting.

Install the CBV fitting.





3. NOTE: The cooler lines must be flushed out at this time.

Tighten the cooler tube nuts.
4. Lower the vehicle.
5. Fill the transmission with clean automatic transmission fluid. Check for correct operation.