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Main Control Valve Body: Assembly

CAUTION: Do not lose parts when cleaning or servicing.
  1. 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.
  2. 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.
    Fig 1: Cleaning & Inspecting EPC Solenoid Screens
    G02027849
  4. Remove and install new shift solenoid O-rings.
    Fig 2: Removing & Installing NEW Shift Solenoid O-Rings
    G02027850
  5. Clean and inspect the torque converter clutch solenoid.
    Fig 3: Cleaning & Inspecting Torque Converter Clutch Solenoid
    G02027851
    6. CAUTION: Make sure that the screen is correctly located.
    Fig 4: Locating Electronic Pressure Control (EPC) Limit Circuit Screen
    G02027852
  6. Clean and inspect the electronic pressure control (EPC) limit circuit screen. Install the EPC limit circuit screen.
  7. Install the four main control valve body check balls.
    Fig 5: Installing Four Main Control Valve Body Check Balls
    G02027853
    8. CAUTION: The springs and valves are not interchangeable. Damage to transmission may occur.
    Fig 6: Installing Dark Color Plastic Converter Relief Valve & Spring
    G02027854
  8. Install the dark color plastic converter relief valve and spring.
    9. NOTE: The springs and valves are not interchangeable.
    Fig 7: Installing Extension Housing Lube Orifice & Metal Silver Electronic Pressure Control (EPC) Limit Relief Valve & Spring
    G02027855
  9. Install the extension housing lube orifice and the metal silver electronic pressure control (EPC) limit relief valve and spring.
    1. Install the extension housing lube orifice.
    2. Install the silver metal EPC limit relief valve and spring.
    10. NOTE: Apply petroleum jelly on the valve body separator plate to hold the main control to separator plate gasket in place.
    NOTE: Use new separator plate main control to separator plate gasket on installation.
    Fig 8: Installing Main Control Valve Body Separator Plate
    G02027856
  10. Install the main control valve body separator plate and gasket to the main control.
    1. Position the main control valve body separator plate to the main control gasket and install separator plate to main control valve body.
    2. Install, do not tighten, the three screws.
  11. Install the special tools into the main control valve body.
    Fig 9: Installing Valve Body Aligners (307-333 & 307-334)
    G02027857
  12. Tighten the screws.
    Fig 10: Tightening Screws
    G02027858
    13. NOTE: Apply petroleum jelly on the separator plate surface to hold the gasket in place.
    NOTE: Use new separator plate gasket on installation.
  13. Install new main control to case gasket.
  14. Remove the special tools from the main control valve body.
    Fig 11: Removing Special Tools From Main Control Valve Body
    G02027859
  15. Rotate the main control valve body so the valve body separator plate is facing down.
    16. 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.
    Fig 12: Installing SSB, SSD, TCC & EPC Solenoids
    G02027860
  16. 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.
    17. CAUTION: The solenoid clamp must be installed in the TCC and EPC solenoid grooves, shift solenoid pockets and the No. 204 plug.
    Fig 13: Installing Solenoid Clamp & Screw
    G02027861
  17. Install the solenoid clamp and the screw.
    1. Position the solenoid clamp on the main control valve body.
    2. Install the screw.
    18. CAUTION: The shift solenoid electrical terminals must face up on installation.
    NOTE: The shift solenoids are interchangeable.
    Fig 14: Installing SSA & SSC Shift Solenoids
    G02027862
  18. Install the SSA and the SSC shift solenoids.
  19. Install the solenoid clamp and the screw.
    1. Position the solenoid clamp on the main control valve body.
    2. Install the screw.
Fig 15: Installing Solenoid Clamp & Screw
G02027863
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