Overhaul

4R70E/4R75E

Main Control Valve Body





Disassembly

Main Control Valve Body Disassembled View













1. Remove the Torque Converter Clutch (TCC) solenoid and the shift solenoid.

1. Remove the bolt.

2. Remove the shift solenoid.

3. Remove the TCC solenoid.





2. Remove the 9 bolts and the 2 valve body reinforcement plates.





3. Remove the separator plate and discard the gaskets.





4. NOTE: Note the location of the 8 coasting booster valve shuttle balls for assembly.

Remove the 8 coasting booster valve shuttle balls.











5. Remove the converter drain back valve and solenoid pressure supply screen.





6. Remove the main control valve body cover plate.

1. Remove the 13 main control valve body cover plate bolts.

2. Remove the main control valve body cover plate.





Assembly

1. Install the valve body cover plate.

1. Position the valve body cover plate gasket and cover plate.

2. Loosely install the 2 guide pin bolts.

3. Loosely install the remaining bolts.





2. Tighten all the bolts in the sequence shown.
- Tighten to 10 Nm (89 lb-in).





3. Install the 8 coasting booster valve shuttle balls.












4. Install the converter drain back valve and solenoid pressure supply screen.





5. Install the separator plate and gaskets.





6. Install the 2 reinforcement plate and the 9 bolts.
- Tighten to 10 Nm (89 lb-in).





7. NOTE: Inspect the shift solenoid O-rings and TCC solenoid O-rings for damage.

Install the shift solenoid.

1. Position the TCC solenoid.

2. Position the shift solenoid.

3. Install the bolt.
- Tighten to 10 Nm (89 lb-in).