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Home › Subaru › 2023 › BRZ Limited, Automatic Trans › Repair and Diagnosis › Transmission › Manual Trans › Manual Transmission System › Counter Gear › Disassembly

Counter Gear: Disassembly

  1. Remove the front bearing.
    CAUTION: Check the direction of the parts before removing them.
    1. Remove the snap ring.
      G16526286Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the front bearing using the ST1, ST2 and a press.

      Preparation tool: 

      ST1: REMOVER (498077400)

      ST2: REMOVER (899864100)

    G16526287Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the drive gear.
    1. Remove the snap ring.
      G16526288Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the drive gear using the ST1, ST2 and a press.

      Preparation tool: 

      ST1: REMOVER (899714110)

      ST2: REMOVER (899864100)

    G16526289Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the 4th gear.
    CAUTION: Check the direction of the parts before removing them.
    1. Remove the snap ring.
      G16526290Courtesy of SUBARU OF AMERICA, INC.
    2. Remove the 4th retaining ring washer and 4th inner race thrust washer.
      G16526291Courtesy of SUBARU OF AMERICA, INC.
    3. Remove the 4th gear bearing inner race using a flat tip screwdriver wrapped with protection tape.
      G16526292Courtesy of SUBARU OF AMERICA, INC.
    4. Remove the 4th gear and synchronizer ring No. 1.
    G16526293Courtesy of SUBARU OF AMERICA, INC.
  4. Use the ST and a press to remove the clutch hub No. 2, 3rd gear, synchronizer ring set No. 3, and 3rd gear needle roller bearing as a unit.

    Preparation tool: 

    ST1: 899714110 (REMOVER)

    G16526294Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the synchronizer ring set No. 3.
    1. Apply transmission gear oil to the tapered cone portion of the 3rd gear and to the synchronizer ring set No. 3.
    2. Press the synchronizer ring set No. 3 against the 3rd gear with your hand and perform the following checks.
      1. Confirm that the parts do not turn in the rotational directions.
        G16526295Courtesy of SUBARU OF AMERICA, INC.
      2. If they do, replace the synchronizer ring set No. 3 with a new one.
    3. Remove the synchronizer ring set No. 3 from the 3rd gear.
  6. Remove the hub sleeve No. 2 (A), and then remove the ball (B), synchromesh shifting key spring No. 1 (C), and synchromesh shifting key No. 1 (D).
    CAUTION:
    • Use a cloth to keep the synchromesh shifting key No. 1, synchromesh shifting key spring No. 1, and ball from popping out.
    • Be careful not to deform the synchromesh shifting key spring No. 1.
    • Check the direction of the parts before removing them.
    NOTE: Make sure not to change the assembly positions for the hub sleeve No. 2 and synchromesh shifting key No. 1.
    G16526253Courtesy of SUBARU OF AMERICA, INC.
  7. Check the hub sleeve No. 2.
    1. Check the end of the spline gear of the hub sleeve No. 2.

      If it is worn, replace the hub sleeve No. 2 with a new one.

    2. Install the hub sleeve No. 2 to the clutch hub No. 2, and check that the parts slide smoothly.

      If they do not slide smoothly, replace the hub sleeve No. 2 and the clutch hub No. 2 with new ones.

G16526254Courtesy of SUBARU OF AMERICA, INC.
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