What causes ball joints to go bad?
Ball joints deteriorate if dirt, grit and impurities get inside or grease escapes, leading to a lack of lubrication. Added to this, rusting and general wear and tear also damage these suspension parts. The effects of this deterioration are excessive play and looseness (beyond the manufacturer’s specifications).
Can ball joints be repaired?
A mechanic will be able to properly disassemble the necessary parts so that they can replace the ball joints. The good thing about this is that your mechanic is looking at other parts so if they find any other problems, they can fix them during this time.
Can you replace a ball joint boot?
The boots of the upper control arm and tie-rod end are relatively easy to replace, no need to unbolt several parts besides the wheel. The lower control arm ball joint is a bit trickier. The big 22 mm nut of the ball joint is hidden under the lower part of the strut.
Do I need an alignment after replacing a ball joint?
No, you certainly don’t need alignment after ball joints, unless your previous alignment was done when ball joints were bad and loose. If your car is driving sloppy after ball joints replacement, check other suspension parts.