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Home >> Subaru >> 2021 >> Outback Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> CVT Transaxle System (Tr580) >> Primary Pulley And Secondary Pulley >> Installation

Primary Pulley And Secondary Pulley: Installation

NOTE:
  • When replacing the primary pulley and secondary pulley, always replace them as a set.
  • When replacing the primary pulley, secondary pulley and variator chain, always replace them as a set.
  1. Install a new seal ring.
    NOTE:
    • Apply CVTF to the seal rings.
    • Do not stretch the seal ring more than necessary.
    G13950720Courtesy of SUBARU OF AMERICA, INC.
  2. When replacing the primary pulley and secondary pulley, select the primary pulley shim.
    1. 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: 

      ST: GAUGE (499575400)

      G13950721Courtesy of SUBARU OF AMERICA, INC.
    2. 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.
      G13950722Courtesy of SUBARU OF AMERICA, INC.
    3. Using the following calculation and selection criteria table, select an appropriate thickness of the primary pulley shim.
      NOTE: Adjust using 1 - 2 pieces.

      C = B - A + H1 - H2 - 31.137 mm (1.2259 in)

      C Pulley alignment mm (in)
      H1 Measured value (mm (in)) of step (1)
      H2 Measured value (mm (in)) of step (2)
      A Specified primary pulley dimension(1)
      B Specified secondary pulley dimension(1)
      31.137 mm (1.2259 in) Constant
      (1) The specified dimensions of the primary pulley and secondary pulley are stamped only on repair parts.
      PRIMARY PULLEY SHIM SELECTION CRITERIA FOR CALCULATED VALUES

      Pulley alignment mm (in) Thickness of primary pulley shim mm (in)
      -0.007 - 0.049 (-0.0003 - 0.002) No shims
      0.050 - 0.149 (0.002 - 0.006) 0.1 (0.004)
      0.150 - 0.249 (0.006 - 0.010) 0.2 (0.008)
      0.250 - 0.349 (0.010 - 0.014) 0.3 (0.012)
      0.350 - 0.449 (0.014 - 0.018) 0.4 (0.016)
      0.450 - 0.549 (0.018 - 0.022) 0.5 (0.020)
      0.550 - 0.649 (0.022 - 0.026) 0.6 (0.024)
      0.650 - 0.749 (0.026 - 0.029) 0.7 (0.028)
      0.750 - 0.849 (0.029 - 0.033) 0.8 (0.031)
      0.850 - 0.949 (0.033 - 0.037) 0.9 (0.035)
      0.950 - 1.049 (0.037 - 0.041) 1.0 (0.039)
      1.050 - 1.149 (0.041 - 0.045) 1.1 (0.043)
      1.150 - 1.163 (0.045 - 0.046) 1.2 (0.047)
  3. Install the secondary pulley.
    1. Temporarily install the secondary pulley.
      NOTE:
      • Apply CVTF to the threaded portion of the bolts and seat surface.
      • Be careful not to tilt the bearing retainer.
      • Tighten the bolt (a) to the position where any part of the seat surface contacts.
      G13950723Courtesy of SUBARU OF AMERICA, INC.
    2. Tighten the bolts in the numerical order as shown in the figure.

      Tightening torque: 

      67.5 N.m (6.9 kgf-m, 49.8 ft-lb)

    G13950724Courtesy of SUBARU OF AMERICA, INC.
  4. Set the variator chain to the secondary pulley.
  5. Using the ST, expand the chain groove of the secondary pulley.
    • When using EXPANDER PULLEY (18769AA030)

      Preparation tool: 

      ST: EXPANDER PULLEY (18769AA030)

      G13950725Courtesy of SUBARU OF AMERICA, INC.
    • When replacing EXPANDER PULLEY (18769AA010) and LOCK PLATE (16047AA000)

      Preparation tool: 

      ST1: EXPANDER PULLEY (18769AA010)

      ST2: LOCK PLATE (16047AA000)

    G13950726Courtesy of SUBARU OF AMERICA, INC.
  6. Install the primary pulley.
    1. Set the primary pulley shim.
      G13950727Courtesy of SUBARU OF AMERICA, INC.
    2. Intersect the chain groove of primary pulley and the chain groove of secondary pulley, and set the primary pulley while placing the variator chain on the primary pulley.
      G13950728Courtesy of SUBARU OF AMERICA, INC.
    3. Align the bolt hole of primary bearing retainer and the bolt hole of reverse brake housing, and install the bolt to secure the primary pulley.
      NOTE: Apply CVTF to the threaded portion of the bolts and seat surface.

      Tightening torque: 

      21 N.m (2.1 kgf-m, 15.5 ft-lb)

    G13950729Courtesy of SUBARU OF AMERICA, INC.
  7. Install the chain guide.
    1. Install the chain guide (B) to the variator chain (A).
    2. Place the support rod (C) on the variator chain inside and install the chain guide (B).
      G13950730Courtesy of SUBARU OF AMERICA, INC.
    3. Install the bolt securing the support rod.
      NOTE: Apply CVTF to the threaded portion of the bolts and seat surface.

      Tightening torque: 

      21 N.m (2.1 kgf-m, 15.5 ft-lb)

      G13950731Courtesy of SUBARU OF AMERICA, INC.
    4. Install the chain guide (B) to the variator chain (A).
    5. Place the lubrication pipe (C) on the variator chain inside and install the chain guide (B).
      G13950732Courtesy of SUBARU OF AMERICA, INC.
    6. Install the bolt to secure the lubrication pipe.
      NOTE: Apply CVTF to the threaded portion of the bolts and seat surface.

      Tightening torque: 

      21 N.m (2.1 kgf-m, 15.5 ft-lb)

      G13950733Courtesy of SUBARU OF AMERICA, INC.
    7. Remove the ST (EXPANDER PULLEY).
      NOTE: When LOCK PLATE (16047AA000) was used, restore EXPANDER PULLEY (18769AA010) to its original state.
  8. Install the reduction drive gear. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>REDUCTION DRIVE GEAR>INSTALLATION .