Cooler Bypass Valve: Installation

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: The transmission fluid cooler bypass valve (CBV) is flow directional. The CBV must be installed with the end cap facing up. If not installed correctly, internal damage to the transaxle will result.

NOTE: The transmission fluid cooler bypass valve (CBV) cannot be successfully cleaned by back flushing, flushing or disassembly. For vehicles that are equipped with this cold weather bypass valve, a new valve should be installed whenever the transaxle is being overhauled.

Install the 2 studs to the lower LH side of the main control cover.
- Tighten to 13 Nm (10 lb-ft).
Position the cooler bypass valve (CBV) onto the studs and loosely install the 2 nuts.
Install the transmission fluid cooler tube into the case fitting near the pump.
- Tighten to 25 Nm (18 lb-ft).
Tighten the 2 CBV retaining nuts.
- Tighten to 11 Nm (8 lb-ft).
Install the fluid cooler tube bracket onto the pump and install the bolt.
- Tighten to 12 Nm (9 lb-ft).
Install the transmission fluid cooler hose onto the converter housing tube. Pull the red clip off the constant tension clamp to activate the clamp.
Install the fluid cooler hose on the CBV and install the clamp.
Install the transmission fluid cooler hose onto the combo fluid cooler lower fitting. Pull the red clip off the constant tension clamp to activate the clamp.
Install the transmission fluid cooler hose onto the upper fitting of the CBV. Install the other end of the hose to the upper combo cooler tube. Pull the red clip off the constant tension clamps to activate the clamp.
Start the vehicle and check the transmission fluid level.
- Fill the transaxle with clean automatic transmission fluid.