Main Control Valve Body

Main Control Valve Body

























Disassembly

1. NOTICE: The Shift Solenoid C (SSC) solenoid may pop out of its bore. This may damage the solenoid.

Remove the Shift Solenoid A (SSA) and the Shift Solenoid C (SSC) clamp and SSA and SSC solenoid.

1. Remove the solenoid clamp screw.

2. Remove the solenoid clamp.

3. Remove the SSA and SSC solenoids.





2. NOTICE: The Torque Converter Clutch (TCC) solenoid may pop out of its bore. This may damage the solenoid.

NOTICE: The converter modulator valve may come out after the Torque Converter Clutch (TCC) solenoid. This may cause damage to the valve.

Remove the Shift Solenoid B (SSB), Shift Solenoid D (SSD), TCC and the Electronic Pressure Control (EPC) solenoid.

1. Remove the solenoid clamp screw.

2. Remove the solenoid clamp.

3. Remove the SSB, SSD, TCC and the EPC solenoids.





3. Rotate the main control valve body so that the main control separating plate is facing up.

4. NOTE: Valves may come out when rotating the main control valve body.

NOTE: The extension housing lube orifice and relief valves may stick to the separator plate.

NOTE: The main control separator plate has a bonded gasket.

Remove the valve body separator plate screws.





5. Remove the valve body separator plate.





6. Remove the extension housing lube orifice.





7. Remove the black plastic converter relief valve and spring.





8. Remove the 4 main control valve body check balls.





9. If the main control requires cleaning, completely disassemble the main control. Refer to the main control exploded view in this procedure.

Assembly

1. Thoroughly clean all parts in solvent and blow dry with moisture free compressed air.

2. NOTICE: Do not stone, file or sand the valves. This will remove the anodized finish and may result in further main control or transmission damage.

After cleaning the main control valve body, carry out the following:

- Inspect all valve and plug bores for scoring or burrs.

- Check all fluid passages for obstructions.

- Inspect all valves and plugs for burrs.

- Inspect all mating surfaces for burrs or distortion.

- Inspect all springs for distortion.

- Check all valves and plugs for free movement in their respective bores.
- Valves and plugs, when dry, must fall from their own weight into their respective bores.

- Roll the manual valve on a flat surface to check for a bent condition.

3. Clean and inspect the EPC solenoid screens.





4. Remove and install new shift solenoid O-rings.





5. Clean and inspect the TCC solenoid.





6. Install the 4 main control valve body check balls.





7. Install the dark color plastic converter relief valve and spring.





8. Install the extension housing lube orifice.





9. NOTE: Apply petroleum jelly on the valve body separator plate to hold it in place on the main control valve body.

NOTE: Use a new bonded separator plate.

Install the main control valve body separator plate to the main control valve body.





10. Install the Valve Body Aligners into the main control valve body.





11. Install the valve body separator plate-to-main control valve body screws.
- Tighten to 7 Nm (62 lb-in).





12. Remove the Valve Body Aligners from the main control valve body.





13. Rotate the main control valve body so the valve body separator plate is facing down.

14. NOTE: All solenoid electrical connectors must face upward on installation.

NOTE: All shift solenoids are interchangeable.

NOTE: If the TCC valve came out during disassembly, use caution when installing the TCC solenoid.

Install the SSB, SSD, TCC and EPC solenoids.

1. Install the TCC solenoid.

2. Install the SSB and SSD solenoids.

3. Install the EPC solenoid.





15. NOTE: The solenoid clamp must be installed in the TCC and EPC solenoid grooves, shift solenoid pockets and the No. 204 plug.

Install the solenoid clamp and the screw.

1. Position the solenoid clamp on the main control valve body.

2. Install the screw.
- Tighten to 7 Nm (62 lb-in).





16. NOTE: The shift solenoid electrical terminals must face up on installation.

NOTE: The shift solenoids are interchangeable.

Install the SSA and SSC shift solenoids.





17. Install the solenoid clamp and the screw.

1. Position the solenoid clamp on the main control valve body.

2. Install the screw.
- Tighten to 7 Nm (62 lb-in).