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Discussion Starter #1
Hi All,
I have recently had to change the two front control arms (wishbone joint) in my e46 330ci, 2001. Since the change the front wheel, near side, was making screeching noise, intermittently, at slow speeds. I took it to a different mechanic to the one who changed the arms, they said the noise was due to the breaks but pointed out that the arms have not been installed correctly. The bolt, see picture below, should be protruding out of the nut. They said, its a Nyloc nut and if the bolt does not protrude, it does not lock properly and hence could loosen in future. I spoke to the mechanic who installed the arm, they said, its non-sene and the bolts and nuts come with the arm, and the bolt does not need to protrude.
918895

Please can any body let me know if they have had this issue before? Does the bolt need to protrude? If yes, what is the solution as the nut and bolt are as tight as they can be.

Thanks
 

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E46 320d touring 2002
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The bolt has a hex female head (6mm?) tô stop the balljoint while tightning the nut. Did they noticed?
Maybe is not tight enougth so.
 

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Hi All,
I have recently had to change the two front control arms (wishbone joint) in my e46 330ci, 2001. Since the change the front wheel, near side, was making screeching noise, intermittently, at slow speeds. I took it to a different mechanic to the one who changed the arms, they said the noise was due to the breaks but pointed out that the arms have not been installed correctly. The bolt, see picture below, should be protruding out of the nut. They said, its a Nyloc nut and if the bolt does not protrude, it does not lock properly and hence could loosen in future. I spoke to the mechanic who installed the arm, they said, its non-sene and the bolts and nuts come with the arm, and the bolt does not need to protrude.
View attachment 918895
Please can any body let me know if they have had this issue before? Does the bolt need to protrude? If yes, what is the solution as the nut and bolt are as tight as they can be.

Thanks
Your first mechanics is full of it. Doesn't know how to do he job and has allowed you to drive off in an unsafe car. That's a disgrace. See the attached BEFORE screen shots of the two fasteners taken from this video of the 50sKid doing the job. Name and shame. This guy is dangerous.

 

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Discussion Starter #5
Thanks All for your response. I will take it back to the mechanic and post the reason of the issue and how they fixed it.
 

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Thanks All for your response. I will take it back to the mechanic and post the reason of the issue and how they fixed it.
The fix is easy. Just stick an allen key in the top of the ball joint bolt to stop it turning and tighten the nut up properly. It's a nyloc nut. The nylon lock ring is in the top portion of the nut. The screw HAS to be protruding all the way through the nut in order for it to lock properly. That would have come loose and you would have been in deep doodoo.
 

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2004 330Ci 85k miles
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No not everyone. Especially not the a55hole who set this guy on the road with his wishbones effectively undone. Do you have a problem with that statement? Let's hear it.
BiH55’s post could be interpretted a few different ways.
everyone is a mechanic because it’s too expensive to pay one
everyone thinks they are a mechanic
or something else?

I didn’t think he was being derogatory.
 

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The first mechanic was telling you some BS, probably to cover his mistake. The fact that he did that, instead of trying to make it right, means he's not trustworthy.
 

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Discussion Starter #14
Hi All,
Thanks for your responses. Quick update, I took the car to the mechanic that identified the issue in the first place and they could not tighten the nuts any further. In the end they said the control arms could be the wrong size. Does not make sense because it fits the car fine and I have been driving this thing for a couple months since the arms were replaced. I need to look for a BMW specialist mechanic I suppose. May be they can explain what's going on...
 

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Hi All,
Thanks for your responses. Quick update, I took the car to the mechanic that identified the issue in the first place and they could not tighten the nuts any further. In the end they said the control arms could be the wrong size. Does not make sense because it fits the car fine and I have been driving this thing for a couple months since the arms were replaced. I need to look for a BMW specialist mechanic I suppose. May be they can explain what's going on...
Look up your car's details on RealOEM.com using the last 7 digits of your VIN number and get the part number of your control arms by drilling down to Front Axe : Front Axle Support / Wishbone (Although I'm not entirely convinced by the wrong part argument)

Example: (yours may be different)

 
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