Valve Body: Service and Repair
Note: The Solenoid body assembly contains the following solenoides:
Coast Clutch Solenoid
#1 and #2 Shift Solenoids
Torque Converter Clutch (TCC) Solenoid
Electronic Pressure Control (EPC) Solenoid
Removal
Note: If the transmission has been disassembled to replace worn or damaged parts, and the valves in the main control valve body stick repeatedly from foreign material, the torque converter must be removed and cleaned by using a suitable torque converter/fluid cooler cleaner.
1. WARNING: On vehicles equipped with an auxiliary battery, both the negative and positive battery cables must be disconnected.
WARNING: On vehicles equipped with a 7.3L engine, both the primary and secondary batteries must be disconnected.
Note: All gasoline vehicles will have new adaptive shift strategies. Whenever the vehicles battery has been disconnected for any type of service or repairs the strategy parameters that are stored in the Keep Alive Memory (KAM) will be lost. The strategy will start to relearn once the battery is reconnected and the vehicle is driven. This is a temporary condition and will return to normal operating condition once the Powertrain Control Module (PCM) relearns all the parameters from the driving operating conditions. There is no time frame set for this process. If a concern is present during down shifts or converter clutch apply, it is not the shift strategy and will require diagnosis.
The customer needs to be notified that they may experience slightly different upshifts either soft or firm and that this condition is temporary and will eventually return to normal operating condition.
Disconnect the battery.
2. Remove the transmission fluid level indicator.
3. Raise and support the vehicle.
4. On vehicles equipped with a 7.3L engine, loosen the (A) bolts and remove the (B) heat shield.
5. CAUTION: Check the electrical connectors for terminal condition, corrosion and contamination. Repair or replace as required.
Disconnect the connector.
6. Disconnect the connector.
7. Note: Do not discard the gasket unless damaged. This is a reusable gasket.
With a suitable drain pan properly positioned, drain, then remove the transmission fluid pan and remove the gasket.
1 Loosen, but do not remove, the bolts.
2 Remove the 15 front and side fluid pan-to-case bolts.
3 Lower the front of the fluid pan and allow the fluid to drain.
4 With the fluid pan properly supported, remove the (A) bolts and the (B) fluid pan and gasket.
8. Note: After removal, discard the filter and seal assembly.
Remove the filter and seal assembly by carefully pulling and rotating the filter as necessary.
9. CAUTION: Be careful not to scratch or damage the aluminum bore. The new seal may leak.
If the seal remains in the pump bore, remove it carefully with a small screwdriver so as not to scratch or damage the aluminum bore.
10. Remove the (A) bolts, the (B) nuts and the (C) accumulator body.
11. CAUTION: Prevent the front of the valve body separator plate from sagging and displacing the check balls.
If the valve body separator plate is not being repaired:
1 Remove the bolt.
2 Install bolt into any case threaded bolt hole on
12. Note: Do not remove the (A) lower-to-upper main control valve body assembly retaining bolts. Keep the main control valve bodies attached as an assembly.
Remove the (B) bolts, the (C) nuts and the (D) main control valve body.
13. Remove the solenoid body assembly.
1 Remove the bolts.
2 Remove the nut.
3 Remove the solenoid body assembly.
14. Remove the solenoid screen assembly by rotating and pulling it.
15. CAUTION: The steel Electronic Pressure Control (EPC) check ball is spring-loaded under the valve body separator plate.
If replacing the valve body separator plate, remove the (A) bolts and the (B) separating plate reinforcing plate.
16. Lower the valve body separator plate and the gaskets carefully, to retain the rubber check balls and the steel EPC check ball and spring assembly.
Installation
CAUTION: Using the incorrect gasket can cause damage to the transmission.
1. Note: Refer to parts catalog for proper gasket usage.
Note: If the valve body separator plate was not removed, proceed to Step 6.
Note: Apply a light film of petroleum jelly to the valve body separator plate prior to assembling the new gaskets.
Assemble the new gaskets to the valve body separator plate.
1 Main control to case gasket.
2 Valve body separator plate.
3 Main control to separator plate gasket.
2. Note: Apply a small amount of petroleum jelly to each check ball prior to positioning them on the valve body separator plate.
Install eight rubber and one steel, EPC check ball.
3. Note: Apply petroleum jelly to the EPC check ball spring prior to installing it into the case.
Install the EPC check ball spring.
4. Position the valve body separator plate and the gaskets to the case carefully, to retain the check balls.
5. Note: The word UP stamped on the separator plate reinforcing plate must be visible when installed.
Install the separator plate reinforcing plate.
1 Install the separator plate reinforcing plate.
2 Install the retaining bolts.
6. Install the solenoid screen assembly by pushing it in and rotating it to lock.
7. Note: Prior to installing the solenoid body assembly, coat the case connector bore with Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19331-A (Motorcraft WA-10) or equivalent meeting Ford specification ESE-M1C171-A.
Install the solenoid body assembly.
1 Install the solenoid body assembly.
2 Install the nut.
3 Install the bolts and nut finger-tight.
8. Install the (A) main control valve body, aligning the (B) manual shift valve with the (C) inner manual valve detent lever. Install the (D) nuts and the (E) bolts finger-tight.
9. If previously installed, remove, then reinstall, the bolt into the separator plate reinforcing plate.
1 Remove the bolt.
2 Install the bolt.
10. Install the (A) accumulator body with the (B) nuts and the (C) bolts finger-tight.
11. Tighten all the accumulator body, the upper and the lower control body and the solenoid body nuts and bolts.
12. Note: Prior to installation, lightly lubricate the seal with clean Motorcraft MERCON V (R) Multi-Purpose (ATF) Transmission Fluid XT-5-QM or equivalent meeting MERCON V (R) specification.
Press the fluid filter and seal assembly into the pump bore until seated.
13. Note: Apply a light coat of petroleum jelly to hold the gasket to the fluid pan. The fluid pan gasket is reusable if not damaged.
Position the (A) gasket onto the cleaned fluid pan. Make sure the (B) magnet is positioned over the dimple in the fluid pan.
14. Install the (A) pan with the gasket. Alternately tighten the (B) bolts.
15. Connect the connector.
16. Connect the connector.
17. Install the (A) heat shield and the (B) bolts.
18. Remove the supports and lower the vehicle.
19. Connect the battery ground cable.
20. Fill the transmission to the specified level with Motorcraft MERCON V (R) Multi-Purpose(ATF) Transmission Fluid XT-5-QM or equivalent meeting MERCON V (R) specification.