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Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Manual Transaxle & Differential (TY856)) >> Extension Case >> Installation
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Extension Case: Installation

WARNING: This page is about a different variant/trim than selected.
  1. Select the adjusting washer of the transfer driven gear, and attach it to the extension case. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>EXTENSION CASE>ADJUSTMENT .
  2. Install the taper roller bearing (extension case side) outer race to the extension case.
    CAUTION: Apply transmission gear oil onto sliding or revolving surfaces before installation.
  3. Select the adjusting washer of the transfer drive gear, and attach it to the center differential.
  4. Apply liquid gasket to the transmission case.

    Liquid gasket: 

    THREE BOND 1215B or equivalent

    G05003278Courtesy of SUBARU OF AMERICA, INC.
  5. Install the extension case.

    Tightening torque: 

    48 N.m (4.9 kgf-m, 35.4 ft-lb)

    G05003277Courtesy of SUBARU OF AMERICA, INC.
    NOTE: Insert the stopper section of the center differential between the oil guide.
    G13648030Courtesy of SUBARU OF AMERICA, INC.
  6. Install the manual transmission assembly to the vehicle. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>MANUAL TRANSMISSION ASSEMBLY>INSTALLATION .