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Home >> Subaru >> 2022 >> WRX Premium, Standard Trans >> Repair and Diagnosis >> Transmission >> Manual Trans >> Manual Transaxle & Differential (TY75) >> Transmission Assembly >> Installation

Transmission Assembly: Installation

  1. Install the release bearing & lever. Ref. to CLUTCH SYSTEM>RELEASE BEARING AND LEVER>INSTALLATION
  2. Replace the differential side retainer oil seal with a new part. Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (TY75)>DIFFERENTIAL SIDE RETAINER OIL SEAL>REPLACEMENT 
    CAUTION:

    Be sure to replace the oil seal after removing the front drive shaft. 

    NOTE:

    When a new oil seal has been installed, replacement is not required. 

  3. Strike and bend the transmission hanger of transmission rear with a rubber hammer etc. so that it gets in contact with the transmission case.
    CAUTION:

    Do not apply excessive load or impact to the transmission case. 

    G09482518Courtesy of SUBARU OF AMERICA, INC.
  4. Install the transmission cushion rubber to the transmission, and tighten the bolt (A).
  5. Install the transmission cushion rubber to the center crossmember, and temporarily tighten the nut (B).

    Tightening torque: 

    Bolt (A)

    35 N.m (3.6 kgf-m, 25.8 ft-lb)

    G11256117Courtesy of SUBARU OF AMERICA, INC.
  6. Install the transmission assembly onto the engine.
    1. Lift up the transmission gradually using a transmission jack.
    2. Engage at the spline section.
      CAUTION:

      Be careful not to hit the main shaft against the clutch cover. 

  7. While raising the transmission jack, loosen the turnbuckle of the ST (ENGINE SUPPORT), and set the engine unit to the original position.
  8. Install the front crossmember and rear crossmember.
  9. Tighten the transmission cushion rubber mounting nut.

    Tightening torque: 

    T1: 70 N.m (7.1 kgf-m, 51.6 ft-lb)

    T2: 140 N.m (14.3 kgf-m, 103.3 ft-lb)

    T3: 35 N.m (3.6 kgf-m, 25.8 ft-lb)

    Fig 1: Transmission Cushion Rubber Mounting Nuts (With Torque Specification)
    G11256118Courtesy of SUBARU OF AMERICA, INC.
  10. Take out the transmission jack.
  11. Tighten the bolts and nuts which hold the lower side of transmission to the engine.

    Tightening torque: 

    50 N.m (5.1 kgf-m, 36.9 ft-lb)

    G14610584Courtesy of SUBARU OF AMERICA, INC.
  12. Lower the vehicle.
  13. Install the starter. Ref. to STARTING/CHARGING SYSTEMS (H4DOTC)>STARTER>INSTALLATION
  14. Tighten the bolts which hold the upper side of the transmission to the engine.

    Tightening torque: 

    50 N.m (5.1 kgf-m, 36.9 ft-lb)

    G14610595Courtesy of SUBARU OF AMERICA, INC.
  15. Remove ST (ENGINE SUPPORT BRACKET and ST ENGINE SUPPORT).
  16. Install the engine ground terminals.

    Tightening torque: 

    19 N.m (1.9 kgf-m, 14.0 ft-lb)

    G14611623Courtesy of SUBARU OF AMERICA, INC.
  17. Install the pitching stopper.

    Tightening torque: 

    T1: 50 N.m (5.1 kgf-m, 36.9 ft-lb)

    T2: 58 N.m (5.9 kgf-m, 42.8 ft-lb)

    Fig 2: Pitching Stopper, Nuts And Bolts (With Torque Specification)
    G11256122Courtesy of SUBARU OF AMERICA, INC.
  18. Lift up the vehicle.
  19. Set the ST (OIL SEAL PROTECTOR) to the differential side retainer.
  20. Replace the circlip of the front drive shaft with a new part.
  21. Install the front drive shaft and remove ST.

    Preparation tool: 

    ST: OIL SEAL PROTECTOR (28399SA010)

    G08318906Courtesy of SUBARU OF AMERICA, INC.
  22. Connect the arm assembly front.
    CAUTION:
    • Always use a new flange bolt and a new flange nut. 
    • While holding the bolt side, tighten the nut to the specified torque. 
    • Be careful not to damage the boot of the ball joint. 

    Tightening torque: 

    70 N.m (7.1 kgf-m, 51.6 ft-lb)

    G14611644Courtesy of SUBARU OF AMERICA, INC.
  23. Install the brake hose bracket. Ref. to FRONT SUSPENSION>FRONT STRUT>INSTALLATION
  24. Install the MT gear shift cable and MT gear select cable to MT gear shift lever. Ref. to CONTROL SYSTEMS>MT GEAR SHIFT LEVER>INSTALLATION
    CAUTION:
    • Be careful not to deform the cable inner. 
    • Do not twist the cable inner more than necessary. 
    • Do not apply excessive load while holding the part (a). 
    G14602420Courtesy of SUBARU OF AMERICA, INC.
  25. Install the propeller shaft. Ref. to PROPELLER SHAFT/DRIVE SHAFT/AXLE>PROPELLER SHAFT>INSTALLATION
  26. Install the hanger bracket.

    Tightening torque: 

    23 N.m (2.3 kgf-m, 17.0 ft-lb)

    G13233676Courtesy of SUBARU OF AMERICA, INC.
  27. Install the center exhaust cover and rear exhaust pipe. Ref. to EXHAUST (H4DOTC)>REAR EXHAUST PIPE>INSTALLATION
  28. Install the center exhaust pipe (rear). Ref. to EXHAUST (H4DOTC)>CENTER EXHAUST PIPE>INSTALLATION>CENTER EXHAUST PIPE (REAR)
  29. Install the crossmember support - rear.

    Tightening torque: 

    70 N.m (7.1 kgf-m, 51.6 ft-lb)

    G11256105Courtesy of SUBARU OF AMERICA, INC.
  30. Lower the vehicle.
  31. Install the operating cylinder.

    Tightening torque: 

    37 N.m (3.8 kgf-m, 27.3 ft-lb)

    G14611624Courtesy of SUBARU OF AMERICA, INC.
  32. Install the engine rear hanger (A) and connector (B).

    Tightening torque: 

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

    G14611622Courtesy of SUBARU OF AMERICA, INC.
  33. Install the bolts securing the vacuum pipe to the engine rear hanger.

    Tightening torque: 

    18 N.m (1.8 kgf-m, 13.3 ft-lb)

    G14611621Courtesy of SUBARU OF AMERICA, INC.
  34. Install the transmission radio ground cord terminal.

    Tightening torque: 

    32.3 N.m (3.3 kgf-m, 23.8 ft-lb)

    G11256097Courtesy of SUBARU OF AMERICA, INC.
  35. Connect the air breather hose.
    G11256096Courtesy of SUBARU OF AMERICA, INC.
  36. Install the coupling harness.
    G14611653Courtesy of SUBARU OF AMERICA, INC.
  37. Pour in transmission gear oil and check the oil level. Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (TY75)>TRANSMISSION GEAR OIL 
  38. Install the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>INSTALLATION
  39. Install the front tires. Ref. to WHEEL AND TIRE SYSTEM>TIRE AND WHEEL>INSTALLATION
  40. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY
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