Cooler Bypass Valve - 4R100 Transmission

Cooler Bypass Valve - 4R100 Transmission
Removal
1. Raise and support the vehicle.





2. CAUTION: Install a new inline transmission fluid filter (XC3Z-7B155-BA) every 48,000 km (30,000 miles) and always as part of a transmission overhaul or exchange. If the vehicle was not equipped with an inline fluid filter install a new inline transmission fluid filter kit (XC3Z-7B155-AA) according to the instructions supplied with the kit as part of a transmission overhaul or exchange.

NOTE: The inline transmission fluid filter, if so equipped, is attached to the fluid cooler return tube. The fluid cooler return tube runs from the intank transmission fluid cooler or the auxiliary transmission fluid cooler, if so equipped, to the fear transmission cooler tube case fitting.

Remove, and discard the inline transmission fluid filter, if so equipped.
3. If not done previously, carry out the transmission fluid cooler flow test procedure.





4. Remove the fluid cooler tube from the front cooler bypass valve assembly fitting.





5. Remove the fluid cooler tube from the rear cooler line case fitting.





6. NOTE: The two rubber-coated sealing washers can fall out when removing the cooler line case fitting.

Remove, and discard the front cooler line case fitting and the two rubber-coated sealing washers.





7. NOTE: The two rubber-coated sealing washers can fall out when removing the cooler line case fitting.

Remove, and discard the rear cooler line case fitting and the two rubber-coated sealing washers.
8. Remove the Cooler Bypass Valve (CBV) assembly from the transmission.

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: Damage will occur to the rubber-coated sealing washers and transmission fluid will leak if the cooler line case fittings are overtightened.

NOTE: Align the rubber-coated sealing washers while installing CBV assembly on the transmission case.

Install the CBV assembly.





3. Install the fluid cooler tube in the front cooler bypass valve assembly fitting and in the rear cooler line case fitting.





4. CAUTION: Install a new inline transmission fluid filter (XCM-711155-111A) every 48,000 km (30,000 miles) and always as part of a transmission overhaul or exchange. If the vehicle was not equipped with an inline fluid filter install a new inline transmission fluid filter kit (XC3Z-7B155-AA) according to the instructions supplied with the kit as part of a transmission overhaul or exchange.

CAUTION: Failure to follow the instructions supplied with the inline transmission fluid filter kit can cause transmission damage.

CAUTION: Verify that the flow arrow on the filter points toward the transmission.

Install a new inline transmission fluid filter (MZ-713155-13A). If the vehicle was not equipped with an inline fluid filter, install a new inline transmission fluid filter kit (XC3Z-7B155-AA) according to the instructions supplied with the kit. Carry out the transmission fluid cooler flow test procedure to verify that there is correct fluid flow through the new inline fluid filter.
5. Lower the vehicle.

6. CAUTION: MERCON(R) Automatic Transmission Fluid is being replaced by MERCON(R) V as a service fluid, per TSB 06-14-4.

Fill the transmission with the specified type and quantity of transmission fluid.
- Use Motorcraft MERCON V Multi-Purpose (ATF) Transmission Fluid XT-5-QM or equivalent meeting MERCON V specifications.

7. Check for leaks.