2013 Subaru Outback Base, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE

Front Differential Assembly: Adjustment

  1. Using the ST, screw-in the retainer until resistance is felt.
    NOTE: RH side should be screwed-in more than LH side.

    ST 18658AA020 WRENCH COMPL RETAINER

    Fig 1: Removing/Installing Differential Side Retainers Using Wrench COMPL Retainer
    G08318133Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the remaining liquid gasket from the mating surface completely.
  3. Using the ST, install the drive pinion assembly to converter case.

    ST 18270KA020 SOCKET (E20)

    NOTE: Do not confuse the three different-length bolts when installing.

    Tightening torque: 

    43 N.m (4.4 kgf-m, 31.7 ft-lb) 

    Fig 2: Identifying Drive Pinion Retainer Mounting Bolts
    G08318086Courtesy of SUBARU OF AMERICA, INC.
  4. Rotate the drive pinion shaft ten times or more using ST1 and ST2.

    ST1 18667AA010 HOLDER

    ST2 499787700 WRENCH

    Fig 3: Rotating Drive Pinion Using Special Tools
    G08318121Courtesy of SUBARU OF AMERICA, INC.
  5. While rotating the pinion shaft, tighten the retainer LH and loosen the retainer RH until the shaft can't be turned anymore. The backlash is "zero" when the pinion shaft comes to the point where it doesn't rotate.
  6. After the "zero" state is established, loosen the retainer LH by 3 notches and secure it with the lock plate. Retighten the retainer RH until it stops. Rotate the drive pinion 2 or 3 times. Tighten the retainer RH further 1-3/4 notches. This sets the preload. Finally, secure the retainer with its lock plate.
    Fig 4: Identifying Lock Plate
    G08579052Courtesy of SUBARU OF AMERICA, INC.
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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