Quote:
Originally Posted by davesx5
So I have been driving my X5 for about a month now and allways had a "thud" from back end. Looking under the car I found a broken sway bar link. I installed 2 new links and still have a "thud". I jacked up the car and found movement with the control arms. Not to sure how to check the ball joints, I found a youtube video of a shop using a jack stand with a cross bar on top. He placed the jack under the spring perch to relieve spring pressure. I took my small bottle jack and welded a 3" bar across the top. With the car on blocks I used my modified jack under the spring perch and wow my ball joint move all over the place. I can move the top and bottom of the wheel more than 2". BTW I have standard suspension, no air bags. I have new ball joints and control arms on order.
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If the ball joints are that far gone, it's likely they are original, and the integral links probably are as well. The link pretty much has to come out to replace the ball joint, so it would be a good while-you're-in-there thing to replace.
Since you don't have air springs, you'll need to use some spring compressors to relieve tension on the suspension to get the link and ball joint out. You can usually get them from auto parts stores on their loaner programs. I've got a ball joint press tool that you could borrow if you like; pm me if you're interested.