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Home › Subaru › 2021 › WRX STI › Repair and Diagnosis › Transmission › Manual Trans › Manual Transaxle & Differential (TY856) › Extension Case › Disassembly

Extension Case: Disassembly

  1. Remove the transfer drive gear. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>TRANSFER DRIVE GEAR>REMOVAL .
  2. Remove the oil guide.
    G05003281Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the shift bracket.
    G05003282Courtesy of SUBARU OF AMERICA, INC.
  4. Using the ST, remove the taper roller bearing (extension case side) outer race.

    ST 18758AA000 PULLER 

    G13648033Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the adjusting washer and oil plate.
    G13648034Courtesy of SUBARU OF AMERICA, INC.
  6. Remove the shifter arm oil seal.
    G13648035Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the reverse check system. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>REVERSE CHECK SYSTEM>REMOVAL .
  8. Remove the extension case oil seal. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>OIL SEAL>REPLACEMENT .
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