April 17, 2010 02:42PM
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Admin
Registered: 15 years ago
Posts: 584 : Vermont, USA |
Here's question #2 of 2 that came up during today's project.
I was replacing the rubber boots on the front CV joints of my iX today, and when I was trying to get the control arm separated from the knuckle, I noticed the following small tear in the rubber boot for the outer ball joint: The ball joint itself isn't showing any symptoms (yet) of wear. Is it possible to just replace the boot without doing the whole ball joint? Do I need to replace the ball joint (assuming I can find a place to do it without having a get a whole new control arm)? __________ Dave '91 325iX |
April 18, 2010 08:50AM
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Registered: 15 years ago
Posts: 1,869 : Amagansett, New York |
I think the IX cars have replaceable ball joints, the dust boots I haven't seen anywhere but that doesn't mean they don't exist. Is there any up and down play and how many miles are on them. You can usually tell if they're tight by how the car sounds/feels when you hit a pot hole but... Rick |
April 18, 2010 11:43AM
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Admin
Registered: 15 years ago
Posts: 584 : Vermont, USA |
Yeah, I'm told the ball joints are replaceable. Not that that's a job a really wanted to deal with right now. There's no play in them that I've noticed. My concern is that with this tear, they'll wear out sooner rather than later. I don't know how many miles are on them. There's 156K on the car, but I don't know if these are originals. They probably are, though. __________ Dave '91 325iX |
April 18, 2010 12:31PM
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Registered: 15 years ago
Posts: 1,869 : Amagansett, New York |
If you decide to keep the ball joint for now I'd recommend pumping some grease in there through the cut then mend the split with Permatex ultra copper gasket maker. Dave, this stuff sticks to leather and rubber (and everything else probably) like you wouldn't believe (let it cure overnight in a warm place), just make sure the surface is cleaned well; I use thinner and then 99% alcohol, the kind with no oil. Rick |
April 18, 2010 12:37PM
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Admin
Registered: 15 years ago
Posts: 584 : Vermont, USA |
Cool, great tip! I've never used that stuff before, but I'll give it a try and see how it goes. __________ Dave '91 325iX |
April 18, 2010 04:20PM
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Registered: 15 years ago
Posts: 1,869 : Amagansett, New York |
It surprised me |
May 03, 2010 09:58AM
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Admin
Registered: 15 years ago
Posts: 584 : Vermont, USA |
Update: the gasket maker experiment was a failure. It just doesn't hold, despite making them as clean as I could get them. Furthermore, I found later that the outer ball joint boot on the right side was also torn. And when I was cleaning them to prep them for the gasket maker, I managed to extend the tear on both of them about 180 degrees around the ball joint. All is not lost, though. I found this nifty product, which supposedly does a good job: BMP ball joint boots I've ordered a pair and will report back when I install them. __________ Dave '91 325iX |
May 03, 2010 05:30PM
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Registered: 15 years ago
Posts: 1,869 : Amagansett, New York |
Much more better |