E83

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buell1203
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E83

Post by buell1203 » 24 Apr 2017, 22:31

Good evening.I am a new member,well versed with spannering but have a problem which maybe several heads can resolve.

my x3 started juddering under braking.The shake was through the steering not the pedal.I discovered the thrust arms could be twisted easily by hand but were not leaking. The NS was the worst so I ordered the parts and set to.

not a difficult job so I ordered the rear arm too.

on completion a quick spin revealed that the alignment was way out. the car feels uncomfortable to drive. the parts looked identical to original but were pattern parts. in theory only minor alignment changes should be required but I now have 6 turns lock to lock one way and 4 the other.

I have been in touch with the suppliers who maintain the parts are correct.

I did fit them in an unconventional way due to infirmity. the car was placed on ramps. the arms were loosened then the side to be changed jacked up to relieve pressure on the suspension. the arms were removed one by one.Not until one was replaced was the other removed. All was tightened up under load.

aAny idea what might be wrong if not the parts themselves
Thanks

Maxwell
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Re: E83

Post by Maxwell » 24 Apr 2017, 23:02

Any change like that will require a 4 wheel alignment and a steering angle sensor reset. Suggest googling for a local place that does Hunter alignment

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M60NJP
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Re: E83

Post by M60NJP » 25 Apr 2017, 06:02

As above, assuming there's no issue with the braking system itself.

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Gus247
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Re: E83

Post by Gus247 » 25 Apr 2017, 08:23

As above with a caveat that you mention only having changed one side - is there a possibility that, whilst the side you changed was the worse of the two, the other side may still be causing issues?
aka Andy

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buell1203
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Car model: E83
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Re: E83

Post by buell1203 » 25 Apr 2017, 12:41

Brakes were fine. Quite recent really. I have the parts for the other side on order so they will be changed once I have them.

I do not think the other side was worse,quite the opposite but of course it is now!

I can understand the need for an alignment check but what is being missed is WHY the substitution of new parts for old has made such a dramatic change to the alignment...two turns of the wheel difference left to right is just ridiculous.That would take several turns on the track rod ends to compensate.
replacing like with like should result in minimal change.

buell1203
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Re: E83

Post by buell1203 » 27 Apr 2017, 11:29

No ideas? Me neither. I always find forums like this.an initial burst of suggestions then blank.
Thanks anyway.

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cockneyrebel
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Re: E83

Post by cockneyrebel » 27 Apr 2017, 11:51

buell1203 wrote:No ideas? Me neither. I always find forums like this.an initial burst of suggestions then blank.
Thanks anyway.
As in.. We're Forum members "not" bmw technicians.
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Maxwell
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Re: E83

Post by Maxwell » 27 Apr 2017, 11:57

The steering angle is out because you only bothered to do one side so the steering is off centre, the angle sensor know this and tries to correct for it.

Here is a suggestion for you, do the other side, spend the money on a proper alignment and get the steering angle reset !

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