LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2019 >> Ascent Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> CVT Transaxle >> Front Reduction Drive Gear >> Adjustment
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Front Reduction Drive Gear: Adjustment

  1. Measure height "A" from the ST upper face to the ball bearing end face using the ST.

    Preparation tool: 

    ST: GAUGE (398643600)

    G09482349Courtesy of SUBARU OF AMERICA, INC.
  2. Measure depth "B" from the converter case cover upper face to the ball bearing catch surface.
    G13200365Courtesy of SUBARU OF AMERICA, INC.
  3. Using the ST, measure height "C" from the ST upper face to the converter case cover mating surface.

    Preparation tool: 

    ST: GAUGE (398643600)

    G13200366Courtesy of SUBARU OF AMERICA, INC.
  4. Using the following formula, calculate clearance "T" to select shims.

Calculation formula:

T mm = (A - 15) - ((C - 15) - B)

[T in = (A - 0.591) - ((C - 0.591) - B)]

T: Clearance

A: Depth from the ST upper face to the ball bearing end surface

B: Depth from the converter case cover upper face to the ball bearing catch surface

C: Height from the ST upper face to the converter case cover mating surface

15 mm (0.591 in): Thickness of ST

Clearance "T" mm (in) Thickness of shim mm (in)
1.070 - 1.174 (0.042 - 0.045) 1.0 (0.039)
1.175 - 1.274 (0.046 - 0.049) 1.1 (0.043)
1.275 - 1.374 (0.050 - 0.053) 1.2 (0.047)
1.375 - 1.474 (0.054 - 0.057) 1.3 (0.051)
1.475 - 1.580 (0.058 - 0.062) 1.4 (0.055)