2021 Subaru Outback BaseFACTORY OEM SERVICE PROCEDURE

Reverse Brake: Removal

  1. Remove the primary pulley and secondary pulley. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>PRIMARY PULLEY AND SECONDARY PULLEY>REMOVALΒ .
  2. Remove the manual valve body and separator plate.
    G13950734Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the oil guide.
    G13950735Courtesy of SUBARU OF AMERICA, INC.
  4. Perform the following measurement, when replacing the reverse brake housing or the drive pinion retainer.
    NOTE: It is not necessary when the primary pulley and secondary pulley are replaced.
    1. Measure and record the thickness of primary pulley shim.
    2. Using the ST, measure the height "H1" from the ST end face to the primary pulley bearing catch surface.
      NOTE: Measure at four points and calculate the average.

      Preparation tool:Β 

      ST: GAUGE (499575400)

      G13950736Courtesy of SUBARU OF AMERICA, INC.
    3. Measure the height "H2" from the ST end face to the secondary pulley bearing catch surface.
      NOTE: Measure at four points and calculate the average.
      G13950737Courtesy of SUBARU OF AMERICA, INC.
    4. Using the following calculation, measure and record the dimension "A" from the primary pulley bearing catch surface to the secondary pulley bearing catch surface.

      A = H2 - H1

      A Dimension (mm (in)) from the primary pulley bearing catch surface to the secondary pulley bearing catch surface
      H1 Measured value (mm (in)) of step (2)
      H2 Measured value (mm (in)) of step (3)
  5. Remove the reverse brake housing.
    G13950738Courtesy of SUBARU OF AMERICA, INC.
  6. Remove the washer.
    G13950739Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the thrust bearing.
    G13950740Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the O-rings.
    G13950741Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the planetary gear and forward clutch drum as a single unit.
    G13950742Courtesy of SUBARU OF AMERICA, INC.
  10. Remove the thrust bearing.
    NOTE: The thrust bearing may be removed together with the forward clutch drum.
    G13950743Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the seal rings.
    G13950744Courtesy 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:

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