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Home › GMC › 1987 › Forward Control 7.4 W, Standard › Repair and Diagnosis › Transmission › Automatic Trans › Overhaul - THM 400 › Transmission Reassembly › Control Valve Body Assembly

Control Valve Body Assembly

  1. Install control valve-to-spacer gasket. Install interchangeable governor pipes on control valve assembly. Install governor screen assembly with pointed end up. Install governor oil pipes and control valve assembly.
  2. Use care when aligning governor feed pipe over screen. Ensure gasket and spacer plate are not moved out of position and manual valve is indexed properly with pin on detent lever. Ensure governor pipes are seated in case holes.
  3. Using 2 guide pins, install control valve assembly and governor pipes on transmission. Be careful when aligning governor feed pipe over screen. Ensure gasket and spacer plate are not moved out of position and manual valve is indexed properly with pin on detent lever. Ensure governor pipes are properly seated in case holes.
  4. Start control valve body-to-case bolts. Remove guide pins. Install detent roller and spring assembly. Install and tighten remaining attaching bolts. Tighten solenoid attaching screws.
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