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Home >> Subaru >> 2018 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> Suspension >> Rear Suspension System >> Upper Arm >> Installation

Upper Arm: Installation

CAUTION:
  • For parts which are not reusable, always use new parts.
  • Always tighten the bushing when the arm is positioned in the state where the vehicle is at curb weight and the wheels are in full contact with the ground.
  1. Before installation, inspect the following items and replace any faulty part with a new one.
    • Visually check the upper arm assembly for damage and deformation.
    • Visually check the bushing for abnormal cracks, fatigue or damage.
    • Visually check the dust cover on the ball joint for abnormal cracks, fatigue or damage.
  2. Install the upper arm assembly.
    1. Make the installation sections of the rear lateral link assembly - rear (the bolt on the housing assembly - rear axle side and the bolt on the sub frame assembly side) horizontal.
    2. Install the upper arm assembly to the sub frame assembly.
    G11253880Courtesy of SUBARU OF AMERICA, INC.

    Tightening torque: 

    Upper arm assembly-sub frame assembly: 90 N.m (9.2kgf-m, 66.4ft-lb)

  3. Connect the upper arm assembly and the housing assembly - rear axle.

    Tightening torque: 

    Upper arm assembly-housing assembly - rear axle: 80 N.m (8.2kgf-m, 59ft-lb)

  4. Install the sub frame assembly.
    1. Lift the sub frame assembly using a transmission jack.
    2. Install the right and left sub frame supports, and install the sub frame assembly.
      CAUTION:
      • The sub frame assembly is heavy. Make sure that it is firmly supported so that it is level.
      • While checking there is no dragging of harness and wire, raise it slowly with a transmission jack.
      G12400672Courtesy of SUBARU OF AMERICA, INC.

      Tightening torque: 

      Refer to "COMPONENT" of "General Description" for the tightening torque. Ref. to REAR SUSPENSION>General Description>COMPONENT .

  5. Install the bolts on the lower side of rear shock absorber assembly.

    Tightening torque: 

    Impreza model: 120 N.m (12.2kgf-m, 88.5ft-lb)

    Crosstrek model: 85 N.m (8.7kgf-m, 62.7ft-lb)

  6. Install the stabilizer link (upper part). (Model with stabilizer)

    Tightening torque: 

    38 N.m (3.9kgf-m, 28 ft-lb)

  7. Install the sensor assembly - headlight beam leveler. (Model with auto headlight beam leveler)
    CAUTION: Do not apply impact to the sensor assembly - headlight beam leveler or forcibly move the arm. Doing so may cause sensor damage and malfunction.

    Tightening torque: 

    7.5N.m (0.8kgf-m, 5.5ft-lb)

  8. Install the clamp of the sub rear harness.
  9. Install the cable assembly - parking brake.

    Tightening torque: 

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

  10. Install the cable assembly - parking brake to the parking brake shoe. Ref. to PARKING BRAKE>Parking Brake Assembly (Rear Disc Brake)>INSTALLATION .
  11. Install the brake hose bracket and the disc brake assembly - rear.

    Tightening torque: 

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

    Disc brake assembly - rear: Refer to "COMPONENT" of "General Description" for the tightening torque. Ref. to BRAKE>General Description>COMPONENT>REAR DISC BRAKE .

  12. Install the rear ABS wheel speed sensor.

    Tightening torque: 

    7.5N.m (0.8kgf-m, 5.5ft-lb)

  13. Install the propeller shaft assembly. Ref. to DRIVE SHAFT SYSTEM>Propeller Shaft>INSTALLATION .
  14. Install the rear exhaust pipe. Ref. to EXHAUST (H4DO)>Rear Exhaust Pipe>INSTALLATION .
  15. Install the fuel tank protector. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel Tank Protector>INSTALLATION .
  16. Install the rear wheels and lower the vehicle.

    Tightening torque: 

    120 N.m (12.2kgf-m, 88.5ft-lb)

  17. Connect the battery ground terminal. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  18. Inspect the wheel alignment and adjust if necessary.
    • Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION .
    • Adjustment: Ref. to FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT .
    CAUTION: When the wheel alignment has been adjusted, perform the following adjustment.
    • Lane keep assist learning value clear (model with EyeSight): Ref. to EyeSight (DIAGNOSTICS)>Clear Active Lane Keep System Learning Value>OPERATION .
    • VDC sensor midpoint setting mode: Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDC Control Module & H/U)>ADJUSTMENT .
  19. Perform reinitialization of the auto headlight beam leveler system. (Model with auto headlight beam leveler) Ref. to LIGHTING SYSTEM>Auto Headlight Beam Leveler System>PROCEDURE .
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