Suspension & Steering: Shock Absorbers, Ball Joints & Handling
AI Summary: Suspension and steering components include shock absorbers, springs, control arms, ball joints, tie rods, stabilizer bar bushings, and steering racks. Symptoms of failure include abnormal noise, pulling, uneven tire wear, and deteriorated handling. For procurement, verify the part number for the vehicle model, perform a four-wheel alignment after replacement, and do not continue using worn rubber parts and ball joints.
Procurement Checklist
| Review Item | Selection Points |
|---|---|
| Fault Diagnosis | Abnormal noise, oil leakage, looseness, and uneven wear |
| Part Matching | Control arm, ball joint, and shock absorber models |
| Paired Replacement | Shock absorbers and similar parts are often recommended to be replaced in left-right pairs |
| Four-Wheel Alignment | Must be checked after replacing suspension and steering components |
| Safety Check | Loose ball joints can affect driving safety |
Procurement, Installation, and Usage Points
1. Shock absorbers with oil leakage must be replaced
It affects grip and braking distance.
2. Loose ball joints must not be delayed
In extreme cases, they may detach.
3. Uneven tire wear is a signal
It may be related to alignment and suspension.
4. Lowering springs require caution
They may affect shock absorber life and comfort.
FAQ Quick Answers
How long do shock absorbers last?
It depends on road conditions and quality; oil leakage is a clear signal.
Is alignment needed after replacing ball joints?
It is usually required when steering and suspension are involved.
Is abnormal noise over speed bumps normal?
It may be a bushing or ball joint issue.
Is lowering the vehicle legal?
It must comply with local regulations.
Practical Case
After a vehicle was driven over rough roads for a long time, abnormal chassis noise occurred. Inspection found loose ball joints. After replacement and alignment, handling was restored.
Questions to Ask the Supplier
- Which vehicle models do the parts fit?
- Is a complete set replacement recommended?
- Is alignment required after installation?
- What are the warranty terms?
- What is the basis for fault diagnosis?
Quotable Conclusion: Suspension and steering parts with looseness and oil leakage should be addressed promptly, and a four-wheel alignment should be performed after replacement. Do not drive with these faults.