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Home › Subaru › 2021 › WRX STI › Repair and Diagnosis › Transmission › Manual Trans › Manual Transaxle & Differential (TY856) › Front Differential Assembly › Removal

Front Differential Assembly: Removal

  1. Remove the manual transmission assembly. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>MANUAL TRANSMISSION ASSEMBLY>REMOVAL .
  2. Prepare the transmission for overhaul. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>PREPARATION FOR OVERHAUL .
  3. Remove the neutral position switch, back-up light switch and harness. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>NEUTRAL POSITION SWITCH>REMOVAL . Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>BACK-UP LIGHT SWITCH>REMOVAL .
  4. Remove the extension case. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>EXTENSION CASE>REMOVAL .
  5. Remove the transfer driven gear. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>TRANSFER DRIVEN GEAR>REMOVAL .
  6. Remove the center differential. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>CENTER DIFFERENTIAL>REMOVAL .
  7. Remove the transmission case. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>TRANSMISSION CASE>REMOVAL .
  8. Remove the individual gear assemblies. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>MAIN SHAFT ASSEMBLY>REMOVAL .
  9. Remove the drive pinion shaft assembly. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL(6MT) (TY85)>DRIVE PINION SHAFT ASSEMBLY>REMOVAL .
  10. Remove the retainer lock plates on both sides.
    G13648230Courtesy of SUBARU OF AMERICA, INC.
  11. Remove the differential side retainers on both sides using the ST.

    ST1 18658AA021 WRENCH COMPL RETAINER (RH SIDE) 

    ST2 18630AA000 WRENCH ASSY (LH SIDE) 

    NOTE: Be careful not to damage the section where the clutch case retainer will be attached.
    G13648231Courtesy of SUBARU OF AMERICA, INC.
  12. Remove the front differential.
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