2012 Subaru Outback RFACTORY OEM SERVICE PROCEDURE

AT Main Case: Installation

  1. Apply ATF to the new seal ring.
  2. Install the thrust bearing and new seal ring to the drum support.
    Fig 1: Identifying Thrust Bearing And Seal Ring
    G07914931Courtesy of SUBARU OF AMERICA, INC.
  3. Install the reverse brake piston.
    NOTE: Apply ATF onto the piston sliding surface.

    ST1 18762AA000 COMPRESSOR SPECIAL TOOL

    ST2 18765AA000 COMPRESSOR SUPPORT

    ST3 18763AA000 COMPRESSOR SHAFT

  4. Install the return spring.
    Fig 2: Installing Return Spring
    G05022404Courtesy of SUBARU OF AMERICA, INC.
  5. Install the spring retainer and snap ring.

    ST1 18762AA000 COMPRESSOR SPECIAL TOOL

    ST2 18765AA000 COMPRESSOR SUPPORT

    ST3 18763AA000 COMPRESSOR SHAFT

    Fig 3: Installing Snap Ring And Spring Retainer Using Compressor Special Tool And Compressor Support
    G05022402Courtesy of SUBARU OF AMERICA, INC.
  6. Install the dish plate.
    NOTE: When installing, make sure that the identification mark is facing the rear side of transmission.
  7. Install the drive plate and driven plate.
    NOTE: When the reverse brake is disassembled, use a new drive plate and driven plate set.
  8. Install the leaf spring.
    Fig 4: Identifying Leaf Spring Dimensions
    G07914934Courtesy of SUBARU OF AMERICA, INC.
  9. Install the retaining plate.
  10. Install the snap ring of the reverse brake.
    Fig 5: Identifying Snap Ring Of Reverse Brake
    G05022400Courtesy of SUBARU OF AMERICA, INC.
  11. Apply compressed air intermittently to check for operation.
    Fig 6: Applying Compressed Air Intermittently
    G05022405Courtesy of SUBARU OF AMERICA, INC.
  12. Check the piston stroke.
    1. Check the amount of drive plate compression "A" described in the wave clutch set of repair parts.
      Fig 7: Identifying Drive Plate Compression Dimensions
      G07914937Courtesy of SUBARU OF AMERICA, INC.
    2. Measure the clearance "B" between the retaining plate and snap ring using a thickness gauge.
      NOTE:
      • Set shims of the same thickness on both sides so that the retaining plate will not tilt.
      • Do not push the shim down with force to a point where the waves on the drive plate will become crushed.
        Fig 8: Identifying Clearance Between Retaining Plate And Snap Ring
        G07914938Courtesy of SUBARU OF AMERICA, INC.
    3. Select and install a retaining plate so that the value calculated from the dimension A and B is within the standard.

      T = A + B

      T: Piston stroke

      A: Amount of drive plate compression

      B: Clearance between retaining plate and snap ring

      Initial standard: 

      2.0 - 2.4 mm (0.08 - 0.09 in) 

      Retaining plate
      Part No. Thickness mm (in)
      31567AB100 4.2 (0.165)
      31567AB170 4.4 (0.173)
      31567AB180 4.6 (0.181)
      31567AB190 4.8 (0.189)
      31567AB200 5.0 (0.197)
  13. Install the direct clutch assembly.
    Fig 9: Installing Direct Clutch Assembly
    G05022399Courtesy of SUBARU OF AMERICA, INC.
  14. Install the high & low reverse clutch assembly.
    Fig 10: Installing High And Low Reverse Clutch Assembly
    G05022398Courtesy of SUBARU OF AMERICA, INC.
  15. Install the thrust needle bearing of the high & low reverse clutch.
    Fig 11: Installing Thrust Needle Bearing Of High And Low Reverse Clutch
    G05022397Courtesy of SUBARU OF AMERICA, INC.
  16. Install the middle & rear sun gear assembly.
    Fig 12: Installing Middle And Rear Sun Gear Assembly
    G05022396Courtesy of SUBARU OF AMERICA, INC.
  17. Install the rear carrier assembly.
    Fig 13: Installing Rear Carrier Assembly
    G05022395Courtesy of SUBARU OF AMERICA, INC.
  18. Install the middle carrier assembly.
    Fig 14: Removing Middle Carrier Assembly
    G05022394Courtesy of SUBARU OF AMERICA, INC.
  19. Install the thrust needle bearing of middle carrier assembly.
    Fig 15: Identifying Needle Bearing Of Middle Carrier Assembly
    G05022393Courtesy of SUBARU OF AMERICA, INC.
  20. Measure the total end play, and select the bearing. Refer to , ADJUSTMENT , AT Main Case.
  21. Install the input clutch pack assembly to oil pump cover.
    Fig 16: Identifying Impact Clutch Pack Assembly And Front Sun Gear Assembly
    G07914946Courtesy of SUBARU OF AMERICA, INC.
  22. Turn the transmission sideways.
  23. Install the oil pump cover.
    1. Apply ATF to the O-ring of input clutch shaft.
    2. Install the oil pump cover to AT main case while supporting the input clutch shaft and oil pump housing with your hand.
      Fig 17: Installing Oil Pump Cover
      G05022392Courtesy of SUBARU OF AMERICA, INC.
    3. Make sure the rear end of drive pinion shaft is engaged to the spline of reduction driven gear.
      Fig 18: Identifying Drive Pinion Shaft
      G07914948Courtesy of SUBARU OF AMERICA, INC.
    4. Protect the input clutch shaft with a cloth, and rotate to engage the spline of the input clutch and rear carrier using pliers.
      NOTE: Work with pressing the oil pump cover.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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