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Home >> Subaru >> 2004 >> Impreza RS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> Control Valve Body >> Disassembly

Control Valve Body: Disassembly

  1. Remove oil strainer from lower control valve body.
    NOTE: Arrange the removed bolts in good order to assemble in the same place as disassembly, because the bolt lengths are different.
    Fig 1: Removing Oil Strainer From Lower Control Valve Body
    G00956370Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the duty solenoids, solenoids and sensor from the lower valve body.
    NOTE: Arrange the removed bolts in good order to assemble the same place as disassembly, because the bolt lengths are different.
    Fig 2: Removing Duty Solenoids, Solenoids And Sensor From Lower Valve Body
    G00956371Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the upper-lower valve body tightening bolts.
    NOTE: Arrange the removed bolts in good order to assemble in the same place as disassembly, because the bolt lengths are different.
    Fig 3: Removing Upper/Lower Valve Body Bolts
    G00956372Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the lower valve body.
  5. Remove the oil filter and plate.
    Fig 4: Removing Oil Filter And Plate
    G00956373Courtesy of SUBARU OF AMERICA, INC.
  6. Remove six steel balls from middle valve body.
    Fig 5: Removing Six Steel Balls From Middle Valve Body
    G00956374Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the middle valve body.
  8. Remove upper separator plate from middle valve body.
    Fig 6: Removing Upper Separator Plate From Middle Valve Body
    G00956375Courtesy of SUBARU OF AMERICA, INC.
  9. Remove valve springs and four steel balls from upper valve body.
  10. Place a shop cloth to the piston removal hole.
  11. Using an air compressor, apply air slowly to each piston hole and remove the pistons.
    Fig 7: Identifying Piston Hole
    G00956376Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the seal ring from piston.
    Fig 8: Removing Seal Ring From Piston
    G00956377Courtesy of SUBARU OF AMERICA, INC.