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Home >> Subaru >> 2022 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Transmission >> Manual Trans >> Manual Transmission System >> Transmission Case >> Removal

Transmission Case: Removal

  1. Remove the extension case. Ref. to MANUAL TRANSMISSION>EXTENSION CASE>REMOVAL .
  2. Remove the shift shaft and shift block.
    1. Slide the shift block, and then remove the shift shaft and shift block as a unit.
      G16526189Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the shift block.
    G16526190Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the head straight screw plug.
    G16526191Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the compression springs and balls.
    G16526192Courtesy of SUBARU OF AMERICA, INC.
    (A) Compression spring
    (B) Ball
  5. Remove the shift arm.
    1. Remove the E-ring.
      CAUTION: Make sure the E-ring does not pop out.
      G16526193Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the shift arm.
    G16526194Courtesy of SUBARU OF AMERICA, INC.
  6. Remove the gear shift fork rod No. 4 and gear shift head No. 5.
    1. Remove the gear shift fork rod No. 4 and gear shift head No. 5 as a unit.
      CAUTION:
      • Make sure the ball on the gear shift fork rod No. 5 side of the gear shift head No. 5 does not pop out.
      • Be careful not to let the balls on the transmission case side fall into the transmission case.
      G16526195Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the ball on the gear shift fork rod No. 5 side of the gear shift head No. 5.
      G16526196Courtesy of SUBARU OF AMERICA, INC.
      (A) Ball
    3. Remove the ball on the transmission case side.
    G16526197Courtesy of SUBARU OF AMERICA, INC.
    (A) Ball
  7. Remove the clutch hub No. 4.
    1. Remove the snap ring.
      CAUTION: Make sure the snap ring does not pop out.
      G16526198Courtesy of SUBARU OF AMERICA, INC.
    2. Use the ST1, ST2, and ST3 to remove the clutch hub No. 4, hub sleeve No. 4, gear shift fork No. 4, and gear shift fork rod No. 5 as a unit.

      Preparation tool: 

      ST1: UPPER PLATE (09951-03010)

      ST2: CENTER BOLT (09953-03010)

      ST3: ADAPTER 16 (09956-03010)

    G16526199Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the gear shift fork No. 4.
    G16526200Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the synchronizer ring No. 2.
    1. Apply transmission gear oil to the tapered cone portion of the 6th gear.
    2. Press the synchronizer ring No. 2 against the 6th gear with your hand and perform the following checks.
      1. Confirm that the parts do not turn in the rotational directions.
        G16526201Courtesy of SUBARU OF AMERICA, INC.
      2. If they do, replace the synchronizer ring No. 2 and 6th gear with new ones.
    3. Remove the synchronizer ring No. 2.
    G16526202Courtesy of SUBARU OF AMERICA, INC.
  10. Remove the 6th gear.
    G16526203Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the thrust needle roller bearing.
    G16526204Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the 6th gear bearing inner race.
    G16526205Courtesy of SUBARU OF AMERICA, INC.
  13. Remove the ball.
    G16526206Courtesy of SUBARU OF AMERICA, INC.
  14. Remove the spring pin, and then remove the gear shift head No. 2.
    CAUTION:
    • Make sure the spring pin does not pop out.
    • Be careful not to drop the spring pin into the transmission case.
    G16526207Courtesy of SUBARU OF AMERICA, INC.
  15. Remove the spring pin, and then remove the gear shift head No. 1.
    CAUTION:
    • Make sure the spring pin does not pop out.
    • Be careful not to drop the spring pin into the transmission case.
    • Check the direction of the parts before removing them.
    G16526208Courtesy of SUBARU OF AMERICA, INC.
  16. Remove the spring pin, and then remove the gear shift head No. 3.
    CAUTION:
    • Make sure the spring pin does not pop out.
    • Be careful not to drop the spring pin into the transmission case.
    G16526209Courtesy of SUBARU OF AMERICA, INC.
  17. Remove the rear bearing retainer.
    1. Remove the rear bearing retainer.
      G16526210Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the shift arm pivot.
    G16526211Courtesy of SUBARU OF AMERICA, INC.
  18. Remove the transmission case.
    1. Remove the snap ring.
      G16526212Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the reverse idler gear shaft securing bolt. (Transmission case side)
      G16526213Courtesy of SUBARU OF AMERICA, INC.
    3. Remove the bolts securing the transmission case and clamp (A).
      G16526214Courtesy of SUBARU OF AMERICA, INC.
    4. Using a plastic hammer, expand the clearance and remove the transmission case.
      CAUTION: Be careful not to damage the transmission case.
      NOTE: Make sure that the damping material (a) has not come off.
      If it has come off, replace the transmission case with a new one.
    G16526215Courtesy of SUBARU OF AMERICA, INC.
    G16526216Courtesy of SUBARU OF AMERICA, INC.
  19. Remove the oil receiver pipe.
    G16526217Courtesy of SUBARU OF AMERICA, INC.
  20. Loosen the bolt securing the reverse idler gear shaft of the clutch housing. (Clutch housing side)
    NOTE: Perform this step only if the reverse idler gear is not removed.
    G16526218Courtesy of SUBARU OF AMERICA, INC.
  21. Remove the liquid gasket from the transmission case and clutch housing.
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