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Home >> Subaru >> 2007 >> Impreza WRX STi Limited >> Repair and Diagnosis >> Steering >> Power Steering >> Power Steering System >> Steering Gearbox >> Installation

Steering Gearbox: Installation

  1. Insert the gearbox into crossmember, being careful not to damage the gearbox boot.
  2. Tighten the gearbox to crossmember bracket via clamp with bolts to specified torque.

    Tightening torque: 

    59 N.m (6.0 kgf-m, 43.4 ft-lb) 

    Fig 1: Identifying Gearbox To Crossmember Bracket Via Clamp With Bolts
    G03815729Courtesy of SUBARU OF AMERICA, INC.
  3. Connect the pipe D first to gear box, and pipe C second.

    Tightening torque: 

    15 N.m (1.5 kgf-m, 10.8 ft-lb) 

    Fig 2: Identifying Pipe D First To Gear Box, And Pipe C Second
    G03815730Courtesy of SUBARU OF AMERICA, INC.
  4. Install the universal joint. < Ref. to INSTALLATION , Universal Joint. >
  5. Connect the tie-rod end and knuckle arm, and tighten with castle nut.

    Castle nut tightening torque: 

    27 N.m (2.75 kgf-m, 19.9 ft-lb) 

    CAUTION: When connecting, do not hit the cap at bottom of tie-rod end with hammer.
  6. After tightening the castle nut to specified torque, tighten it further within 60° until cotter pin hole is aligned with the slot in nut, and then bend the cotter pin to lock.
    Fig 3: Identifying Castle Nut
    G03815731Courtesy of SUBARU OF AMERICA, INC.
  7. Install the front stabilizer to vehicle. < Ref. to INSTALLATION , Front Stabilizer. >
  8. Install the front exhaust pipe assembly.
  9. Install the sub frame. < Ref. to INSTALLATION , Sub Frame. >
  10. Install the undercover. < Ref. to INSTALLATION , Front Under Cover. >
  11. Align the center of roll connector. < Ref. to ADJUSTMENT , Roll Connector. >
  12. Install the steering wheel. < Ref. to INSTALLATION , Steering Wheel. >
  13. Install the front wheels.
  14. Tighten the wheel nuts to specified torque.

    Tightening torque: 

    90 N.m (9.1 kgf-m, 65.8 ft-lb) 

  15. Connect the battery ground cable to battery.
  16. Pour fluid into the oil tank, and bleed air. < Ref. to POWER STEERING FLUID . >
  17. Check for fluid leaks.
  18. Install the jack-up plate.
  19. Lower the vehicle.
  20. Check the fluid level in oil tank.
  21. After adjusting the toe-in and steering angle, tighten the lock nut on tie-rod end.

    Tightening torque: 

    83 N.m (8.5kgf-m, 61.5 ft-lb) 

NOTE: When adjusting the toe-in, hold boot as shown in Fig 4, to prevent it from being rotated or twisted. If twisted, straighten it.
Fig 4: Adjusting Toe-In
G03815732Courtesy of SUBARU OF AMERICA, INC.
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