Subaru Legacy BN/BS (2015-2019) Service Manual: General diagnostic table inspection

Subaru Legacy BN/BS (2015-2019) Service Manual / Rear suspension / General diagnostic table inspection

1. IMPROPER VEHICLE POSTURE OR IMPROPER WHEEL ARCH HEIGHT

Possible cause	Corrective action
(1) Permanent distortion or damaged coil spring	Replace.
(2) Rough operation of shock absorber COMPL	Replace.
(3) Installation of the wrong shock absorber assembly	Replace with proper parts.
(4) Installation of the wrong coil spring	Replace with proper parts.

2. POOR RIDE COMFORT

1. Large rebound shock

2. Rocking of the vehicle continues too long after running over bump and hump.

3. Excessive shock in bumping

Possible cause	Corrective action
(1) Damaged coil spring	Replace.
(2) Overinflation of tires	Adjust.
(3) Improper wheel arch height	Replace the coil springs with new parts.
(4) Defective operation of shock absorber assembly	Replace.
(5) Damage or deformation of shock mount - rear	Replace.
(6) Unsuitable length (maximum or minimum) of shock absorber assembly	Replace with appropriate parts.
(7) Deformation or loss of bushing	Replace.
(8) Deformation or damage of helper - rear in shock absorber	Replace.
(9) Oil leakage from the shock absorber COMPL	Replace.

3. NOISE

Possible cause	Corrective action
(1) Wear or damage of shock absorber assembly component parts	Replace.
(2) Loosening of the suspension link or arm installing bolt	Tighten to the specified torque.
(3) Deformation or loss of bushing	Replace.
(4) Unsuitable length (maximum or minimum) of shock absorber	Replace with appropriate parts.
(5) Damaged coil spring	Replace.
(6) Wear or damage of the ball joint	Replace.
(7) Deformation of the stabilizer clamp	Replace.

Wheel alignment inspection

NOTE:Measure and adjust the front and rear wheel alignment at a time. Refer to “Wheel Alignment” in FS section for measurement and adjustment of wheel alignment.• Inspection: Wheel ...

Other materials:

Caution
• Prior to starting work, pay special attention to the following:1. Always wear work clothes, a work cap, and protective shoes. Additionally, wear a helmet, protective goggles, etc. if necessary.2. Protect the vehicle using a seat cover, fender cover, etc.3. Prepare the service tools, clean cl ...