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Home >> Subaru >> 2022 >> WRX Premium, Standard Trans >> Repair and Diagnosis >> Drivelines & Axles >> Wheel Hubs >> Axle Shafts, Propeller Shaft & Hubs >> Front Drive Shaft >> Installation

Front Drive Shaft: Installation

NOTE:

When the front drive shaft is removed using the ST, install the caliper body. Ref. to  BRAKE>FRONT DISC BRAKE ASSEMBLY>INSTALLATION  . 

  1. Replace with a new differential side retainer oil seal.

    MT model: 

    Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (TY75)>DIFFERENTIAL SIDE RETAINER OIL SEAL>REPLACEMENT .

    CVT model:  Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>DIFFERENTIAL SIDE RETAINER OIL SEAL>REPLACEMENT .

  2. Replace the circlip with a new part.
  3. Apply transmission gear oil to the differential side retainer oil seal lip and front drive shaft insertion section. (MT model)
  4. Apply differential gear oil to the differential side retainer oil seal lip and front drive shaft insertion section. (CVT model)
  5. Set the ST to differential side retainer.

    Preparation tool: 

    ST: OIL SEAL PROTECTOR (28399SA010)

    G14602025Courtesy of SUBARU OF AMERICA, INC.
  6. Insert the front drive shaft spline section into transmission and remove the ST (OIL SEAL PROTECTOR).
    NOTE:

    Remove it before inserting the front drive shaft completely. 

  7. Insert the front drive shaft completely.
  8. Insert the front drive shaft into the front hub unit bearing.
    CAUTION:
    • Be careful not to damage the spline portion of the front drive shaft. 
    • Be careful not to damage the front hub unit bearing. 
    • Be careful not to damage the boot of the joint. 
    • Do not strike the front drive shaft with a hammer, etc. 
  9. 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)

    G14602026Courtesy of SUBARU OF AMERICA, INC.
  10. Install the brake hose bracket. Ref. to FRONT SUSPENSION>FRONT STRUT>INSTALLATION .
  11. Install the center exhaust pipe (rear). Ref. to EXHAUST (H4DOTC)>CENTER EXHAUST PIPE>INSTALLATION>CENTER EXHAUST PIPE (REAR) .
  12. Install the crossmember support rear RH. Ref. to FRONT SUSPENSION>CROSSMEMBER SUPPORT>INSTALLATION .
  13. Fill the transmission gear oil. (MT model) Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (TY75)>TRANSMISSION GEAR OIL>REPLACEMENT .
  14. Fill differential gear oil. (CVT model) Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>DIFFERENTIAL GEAR OIL>REPLACEMENT .
  15. While depressing the brake pedal, install the axle nut.
    CAUTION:

    Be sure to use a new axle nut. 

    Tightening torque: 

    220 N.m (22.4 kgf-m, 162.3 ft-lb)

  16. Crimp the axle nut.
    G14602027Courtesy of SUBARU OF AMERICA, INC.
  17. Install the front wheels. Ref. to WHEEL AND TIRE SYSTEM>TIRE AND WHEEL>INSTALLATION .
  18. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  19. Perform VDC sensor midpoint setting mode. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDC CONTROL MODULE& H/U>ADJUSTMENT>VDC SENSOR MIDPOINT SETTING MODE .
  20. Perform the lane keep assist learning value clear. (Models with EyeSight) Ref. to EYESIGHT (DIAGNOSTICS) >WORK SUPPORT .
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