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.
Check if the collar is protruding from the rear axle housing. (Hybrid model)
If the collar comes off from the rear axle housing, replace the rear axle housing with a new part. (Hybrid model)

NOTE: This procedure is only for non-hybrid models. For hybrid models, perform the procedure by referring to the procedure for non-hybrid models.

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 boot on the ball joint for abnormal cracks, fatigue or damage.
Install the rear upper arm assembly.
1. Make the rear lateral link (rear) installation service informations (the bolt on the rear axle housing side and the bolt on the sub frame assembly side) horizontal.
2. Install the rear upper arm assembly to the sub frame assembly.
Tightening torque:

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

Courtesy of SUBARU OF AMERICA, INC.
Connect the rear upper arm assembly and the rear axle housing.
Tightening torque:

Rear upper arm assembly - rear axle housing: 80 N.m (8.2 kgf-m, 59.0 ft-lb)
Install the rear suspension assembly.
1. Lift the rear suspension assembly using a transmission jack.
2. Install the support - sub frame on the left and right sides, and install the rear suspension assembly.
CAUTION:
- The rear suspension 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.
Tightening torque:

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

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Install the bolts on the lower side of rear shock absorber assembly.
Tightening torque:

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

Crosstrek model: 85 N.m (8.7 kgf-m, 62.7 ft-lb)
Install the cable assembly - parking brake.
Tightening torque:

18 N.m (1.8 kgf-m, 13.3 ft-lb)
Install the cable assembly - parking brake to the parking brake shoe. Ref. to PARKING BRAKE>PARKING BRAKE ASSEMBLY (REAR DISC BRAKE)>INSTALLATION .
Install the disc brake assembly - rear and disc rotor. Ref. to BRAKE>REAR DISC ROTOR>INSTALLATION .
Install the rear ABS wheel speed sensor.
Tightening torque:

7.5 N.m (0.8 kgf-m, 5.5 ft-lb)
Install the stabilizer link (bottom part). (Model with stabilizer)
Tightening torque:

38 N.m (3.9 kgf-m, 28.0 ft-lb)
Install the sensor assembly - headlight beam leveler. (Model with vehicle height sensor)
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:

7.5 N.m (0.8 kgf-m, 5.5 ft-lb)
Install the clamp of the sub rear harness.
Install the propeller shaft assembly. Ref. to DRIVE SHAFT SYSTEM>PROPELLER SHAFT>INSTALLATION .
Install the rear exhaust pipe. Ref. to EXHAUST (H4DO (EXCEPT FOR HEV))>REAR EXHAUST PIPE>INSTALLATION .
Install the fuel tank protector. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO (EXCEPT FOR HEV))>FUEL TANK PROTECTOR>INSTALLATION .
Install the rear wheels and lower the vehicle.
Tightening torque:

120 N.m (12.2 kgf-m, 88.5 ft-lb)
Connect the ground terminal to 12V engine restart battery sensor. Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BATTERY .
NOTE: For the hybrid model, connect the battery negative terminal.
Using the Subaru Select Monitor, exit the brake maintenance mode according to the display screen. (Hybrid model) Ref. to PARKING BRAKE>PARKING BRAKE SYSTEM>OPERATION>BRAKE MAINTENANCE MODE .
After the operation is completed, apply and release the parking brake five times and ensure that the brake operates normally.
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 (except for hybrid model (model with EyeSight)): Ref. to EYESIGHT (DIAGNOSTICS) (EXCEPT FOR HEV)>CLEAR ACTIVE LANE KEEP SYSTEM LEARNING VALUE>OPERATION .
- Lane keep assist learning value clear (hybrid model (model with EyeSight)): Ref. to EYESIGHT (DIAGNOSTICS) (HEV)>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 (VDCCM & H/U)>ADJUSTMENT .
Perform reinitialization of the auto headlight beam leveler system. (Model with vehicle height sensor) Ref. to LIGHTING SYSTEM>AUTO HEADLIGHT BEAM LEVELER SYSTEM>PROCEDURE .