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.

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 upper arm assembly.
1. Make the installation sections of the rear lateral link assembly (the bolt on the rear axle housing side and the bolt on the rear sub frame assembly side) horizontal.
2. Install the upper arm assembly to the rear sub frame assembly.
Courtesy of SUBARU OF AMERICA, INC.

Tightening torque:

Upper arm assembly - rear sub frame assembly: 90 N.m (9.2 kgf-m, 66.4 ft-lb)
Connect the upper arm assembly and the rear axle housing.
Tightening torque:

Upper arm assembly - rear axle housing: 80 N.m (8.2 kgf-m, 59 ft-lb)
Install the rear sub frame assembly. Refer to REAR SUSPENSION>REAR SUB FRAME>INSTALLATION .
Install the rear wheels and lower the vehicle.
Tightening torque:

120 N.m (12.2 kgf-m, 88.5 ft-lb)
Inspect the wheel alignment and adjust if necessary.
- Inspection: Refer to FRONT SUSPENSION>WHEEL ALIGNMENT>INSPECTION .
- Adjustment: Refer 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): Refer to EYESIGHT (DIAGNOSTICS)>CLEAR ACTIVE LANE KEEP SYSTEM LEARNING VALUE>OPERATION .
- VDC sensor midpoint setting mode: Refer to VEHICLE DYNAMICS CONTROL(VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U)>ADJUSTMENT>VDC SENSOR MIDPOINT SETTING MODE .
Connect the battery ground terminal. Refer to NOTE>NOTE>BATTERY .
Perform reinitialization of the auto headlight beam leveler system. (Model with auto headlight beam leveler) Refer to LIGHTING SYSTEM>AUTO HEADLIGHT BEAM LEVELER SYSTEM>PROCEDURE .