Main Control Valve Body
Main Control Valve BodySpecial Tools:
Special Tool(s)
Disassembly
1. CAUTION: The SSC solenoid may pop out of its bore. This may damage the solenoid.
Remove the SSA and the 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. CAUTION: The Torque Converter Clutch solenoid (TCC) solenoid may pop out of its bore. This may damage the solenoid.
CAUTION: The converter modulator, valve may come out after the TCC solenoid.
This may cause damage to the valve.
- Remove the SSB, SSD, torque converter clutch solenoid, and the EPC solenoid.
1 Remove the solenoid clamp screw.
2 Remove the solenoid clamp.
3 Remove the SSB, SSD, torque converter clutch solenoid and the EPC solenoids.
3. Rotate the main control valve body so that the main control separating plate is facing up.
4. CAUTION: Valves may come out when rotating the main control valve body.
CAUTION: 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 valve body separator plate.
6. Remove the extension housing lube orifice.
7. Remove the black plastic converter relief valve and spring.
8. Remove the four main control valve body check balls.
Assembly
1. CAUTION: Do not lose parts when cleaning or servicing.
Thoroughly clean all parts in solvent and blow dry with moisture free compressed air.
2. CAUTION: 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 torque converter clutch solenoid.
6. Install the four 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.
NOTE: Use new bonded separator plate to main control.
Install the main control valve body separator plate to the main control.
10. Install the special tools into the main control valve body.
11. Tighten the screws.
12. Remove the special tools from the main control valve body.
13. Rotate the main control valve body so the valve body separator plate is facing down.
14. CAUTION: 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 torque converter clutch 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. CAUTION: 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.
16. CAUTION: The shift solenoid electrical terminals must face up on installation.
NOTE: The shift solenoids are interchangeable.
Install the SSA and the 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.