Parts for your 2018 Subaru Legacy-Control arms

Understanding Control Arms on the 2018 Subaru Legacy

The 2018 Subaru Legacy, like many mid-sized sedans, relies on a well-designed suspension system to provide a smooth and stable ride. One of the critical components in this suspension setup is the control arm. For those unfamiliar, control arms play a vital role in connecting the vehicle's chassis to the wheel assembly, allowing controlled movement and maintaining proper wheel alignment. On the 2018 Legacy, control arms are indeed an essential part of the front suspension system, so understanding their purpose and maintenance is crucial for anyone looking after this car.

Control arms are basically metal links or levers that connect the vehicle's frame to the steering knuckle or wheel hub. In the Legacy, these arms help hold the wheels in position relative to the body while allowing them to move up and down to absorb bumps and keep the tyres in contact with the road. This flexibility is key to ensuring stability during turns and over uneven surfaces, and also plays a part in the overall handling and comfort of the ride.

More specifically, the 2018 Subaru Legacy uses front lower control arms in its suspension design. These control arms are typically made from stamped steel or aluminium alloys to provide strength without adding too much weight. Each control arm is fitted with bushings that act as cushions, reducing vibrations and noise while allowing some movement between the arm and the frame. Ball joints may also be part of the assembly, linking the control arms to the steering knuckles and allowing for smooth pivoting of the wheels when steering.

Because the Legacy's suspension depends heavily on these control arms, any wear or damage can seriously affect the vehicle's performance. Worn bushings, for instance, can cause clunking noises, reduced ride quality, and uneven tyre wear. If the ball joints within the control arms are compromised, steering responsiveness may deteriorate, and handling could become unsafe, particularly at higher speeds or during cornering.

Keeping control arms in good shape is all about proper maintenance and timely replacement. For starters, control arms aren't parts you regularly adjust or service, but they should be inspected during routine suspension checks - something that a mechanic will typically do when performing a standard service or wheel alignment.

Here are some key points when it comes to control arm care for the 2018 Subaru Legacy:

• Regular inspections: It's a good idea for owners to have the control arms visually inspected every 20,000 to 30,000 kilometres or during tyre rotations. Mechanics will look for signs of bush wear, rust, cracks, or any bending in the arm itself.
• Listen for noises: Clunking sounds from the front suspension, especially when going over bumps or during turns, can indicate worn control arm bushings or ball joints.
• Check wheel alignment: Uneven tyre wear and poor alignment can be symptoms of worn control arms. Ensuring the Legacy stays aligned is important both for handling and tyre longevity.
• Replace worn parts promptly: If any wear or damage is found during inspection, it's best to replace control arms or bushings sooner rather than later to avoid further suspension or steering issues.
• Quality matters: Using genuine or high-quality aftermarket parts for replacements will maintain the intended performance and safety of the Legacy's suspension system.

When it comes time to change the control arms, it's not usually a difficult job for a qualified mechanic, but it does require some specific tools and expertise. The process involves lifting the vehicle, removing the wheel, disconnecting the old control arm from the chassis and steering knuckle, and then fitting the new control arm with fresh bushings and ball joints if applicable. After replacement, a wheel alignment is essential to ensure everything is set correctly.

Many Subaru Legacy owners overlook control arms until something goes seriously wrong, but keeping an eye on these components can prevent costly repairs down the track. Because the 2018 Legacy is often used for daily driving and long-distance cruising, having suspension components in top shape ensures safety, comfort, and predictable handling all around.

In conclusion, control arms are an indispensable part of the 2018 Subaru Legacy's suspension system. They serve the crucial function of allowing the wheels to move smoothly up and down while keeping everything aligned for steering and handling. Regular inspection and timely maintenance or replacement of these parts will keep the vehicle performing well and riding comfortably on Australian roads, from city streets to country highways.