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Rear Sub Frame: Installation

CAUTION:
  • For parts which are not reusable, always use new parts.
  • Always tighten the bushing in the state where the vehicle is at curb weight and the wheels are in full contact with the ground.
  • During the installation, make sure that the marking of ABS wheel speed sensor harness does not twist.
  1. Check the removed parts for wear, damage and crack, and repair or replace them if faulty.
  2. Install each part to the rear sub frame assembly.

    Tightening torque: 

    Refer to "COMPONENT" of "General Description" for the tightening torque. < Ref. to  COMPONENT  , General Description. > 

  3. Install the rear sub frame assembly.
    1. Lift the rear sub frame assembly using a transmission jack.
    2. Install the right and left sub frame supports and the rear support sub frame, and install the rear sub frame assembly.
      CAUTION:
      • The rear sub frame assembly is heavy. Make sure that it is horizontally-supported.
      • While checking there is no dragging of harness and wire, raise it slowly with a transmission jack.
      Fig 1: Supporting Rear Sub Frame Assembly Using Transmission Jack
      G10269475Courtesy of SUBARU OF AMERICA, INC.

      Tightening torque: 

      Refer to "COMPONENT" of "General Description" for the tightening torque. < Ref. to  COMPONENT  , General Description. > 

  4. Install the bolts and nuts on the lower side of rear shock absorber assembly.

    Tightening torque: 

    85 N.m (8.7 kgf-m, 62.6 ft-lb) 

  5. Install the fuel tank protector.
    • STI model: < Ref. to INSTALLATION , Fuel Tank Protector. >
    • Except for STI model: < Ref. to INSTALLATION , Fuel Tank Protector. >
  6. Install the sensor assembly - headlight beam leveler. (Model with auto headlight beam leveler)

    Tightening torque: 

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb) 

  7. Install the clamp of the sub rear harness.
  8. Install the cable assembly - parking brake. (Models without EyeSight) < Ref. to INSTALLATION , Parking Brake Assembly (Rear Disc Brake). >
  9. Install the electronic parking brake harness. (Models with EyeSight)

    Tightening torque: 

    18 N.m (1.8 kgf-m, 13.3 ft-lb) 

  10. Install the brake hose bracket and the disc brake assembly - rear.

    Tightening torque: 

    Brake hose bracket: 33 N.m (3.4 kgf-m, 24.3 ft-lb) 

    Disc brake assembly - rear (STI model): 65 N.m (6.6 kgf-m, 47.9 ft-lb) 

    Disc brake assembly - rear (except for STI model): 66 N.m (6.7 kgf-m, 48.7 ft-lb) 

  11. Install the rear ABS wheel speed sensor.

    Tightening torque: 

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb) 

  12. Install the propeller shaft assembly. < Ref. to INSTALLATION , Propeller Shaft. >
  13. Install the rear exhaust pipe.
    • STI model: < Ref. to INSTALLATION , Rear Exhaust Pipe. >
    • Except for STI model: < Ref. to INSTALLATION , Rear Exhaust Pipe. >
  14. Install the rear wheels and lower the vehicle.

    Tightening torque: 

    120 N.m (12.2 kgf-m, 88.5 ft-lb) 

  15. Inspect the wheel alignment and adjust if necessary.
    • Inspection: < Ref. to INSPECTION , Wheel Alignment. >
    • Adjustment: < Ref. to ADJUSTMENT , Wheel Alignment. >
    CAUTION: When the wheel alignment has been adjusted, perform the following adjustment.
    • Lane keep assist learning value clear (model with EyeSight): < Ref. to OPERATION , Clear Active Lane Keep System Learning Value. >
    • Steering angle sensor adjustment: < Ref. to ADJUSTMENT , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). >
  16. Connect the battery ground terminal. < Ref. to BATTERY , NOTE, Note. >
    NOTE: For models other than STI model, connect the ground terminal to battery sensor.
  17. Perform reinitialization of the auto headlight beam leveler system. (Model with auto headlight beam leveler) < Ref. to PROCEDURE , Auto Headlight Beam Leveler System. >
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