Introduction
This document outlines considerations when replacing lower control arm (LCA) bushings on a vehicle, including the option of replacing the entire control arm assembly versus replacing individual bushings.
Problem
Worn or damaged lower control arm bushings can negatively impact vehicle handling and ride quality. Symptoms include torn or cracked bushings. The lower ball joint may also need replacing.
Solution
Two primary options exist:
- Replace the entire lower control arm assembly: Aftermarket complete control arms are available and offer a faster installation compared to bushing replacement. These typically include a new ball joint secured by a circlip.
- Replace the individual bushings: This involves pressing out the old bushings and pressing in new ones. The ball joints can be inspected and replaced separately if necessary.
Chosen Solution: Replacement of the bushings using Superpro bushings was performed. The original ball joints were inspected and found to be in good condition, so replacement was not required.
Relevant Parts
- Aftermarket Lower Control Arm: Complete assembly, including new ball joint.
- Superpro Bushings: Used for individual bushing replacement.
- OEM Bushes: Standard replacement bushes.
Important Considerations
- Aftermarket Control Arm Quality: There are concerns regarding the quality and durability of ball joints included in some aftermarket control arm assemblies, especially those at a significantly lower price point than OEM parts.
- Seized Adjuster Bolts: The lower arm adjuster bolts may be seized and difficult to remove. Apply penetrating oil and use appropriate extraction methods if necessary.
- Ball Joint Replacement: On OEM arms, the lower ball joint is pressed in and then secured with a circlip.
- Lubrication: When reinstalling the bolts, use grease to prevent future seizing. Superpro bush grease can be used for this.
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