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Old 24-08-2011   #1
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Exclamation Help - New Front Wishbone Too Loose?

Hi -

I fitted new front lower wishbones recently to my 2004 JTD, purchased from eBay (item 220568938152). Just noticed today whilst changing a wheel that there is a lot of movement (on both sides) which doesn't seem right.

With the roadwheels fitted and fully loaded (eg no jack) it is possible with a hard shove to roll the wheels backwards and forwards, demonstrating a good 10mm of movement front to rear. As each roadwheel moves (red arrows in pic, o/s) you can see the rear arm of the wishbone moving approx 10mm backward and forward (blue arrows).

The rear bushes are intact and appear sound, they just seem to be too soft to restrain the movement. The rubber arms of each bush are aligned front-to-rear, so they are not directly bearing the movement force (see other pic).

If someone can tell me this is normal, then I'll be very happy. But it looks wrong to me. Any comments or advice would be appreciated.

Thanks!
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Old 24-08-2011   #2
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Re: Help - New Front Wishbone Too Loose?

The movement your describing could be a result of a worn track rode end and not the new wishbones you've installed.
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Last edited by Shadeyman; 24-08-2011 at 20:31.
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Old 24-08-2011   #3
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Re: Help - New Front Wishbone Too Loose?

Quote Originally Posted by Shadeyman View Post
The movement your describing could be a result of a worn track rode end and not the new wishbones you've installed.
Hi Shadey,
Thanks for replying, but I can't see how that would explain it. The roadwheel is moving forward and back, rotating on the front wishbone bush (green blob). The rear wishbone arm visibly moves as marked by red arrows.

The track rod can't be intended to restrain that movement, surely? The steering rack couldn't handle suspension forces being transmitted through it, and the track rod has a swivel joint which deliberately allows lateral & vertical movement.

My understanding is that the wishbone should hold the hub in a precise position, and the track rod should apply turning force only - eg rotating on the knuckle joint. Or have I completely misunderstood.....?

Best wishes, and my sanded, araldited rear bushes are still fine!
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Old 24-08-2011   #4
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Re: Help - New Front Wishbone Too Loose?

Is the rubber in the front bush compressing or is the metal tube in the center of the front bush moving. There are 2 different front bush tube internal diameters, 12mm and 14mm. If you've fitted the wrong wishbone with a 14mm bush to a car that should have a 12mm bush and bolt, there could be movement.
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Old 24-08-2011   #5
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Re: Help - New Front Wishbone Too Loose?

The rubber front bush does allow some movement but 10mm seems excessive to me.

Quote Originally Posted by Steve148 View Post
and my sanded, araldited rear bushes are still fine!
So you purchased brand new wishbones then altered them by gluing(araldite) in some other bushes?
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Last edited by Shadeyman; 24-08-2011 at 22:39.
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Old 24-08-2011   #6
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Re: Help - New Front Wishbone Too Loose?

Quote Originally Posted by Davren View Post
Is the rubber in the front bush compressing or is the metal tube in the center of the front bush moving. There are 2 different front bush tube internal diameters, 12mm and 14mm. If you've fitted the wrong wishbone with a 14mm bush to a car that should have a 12mm bush and bolt, there could be movement.
Thanks Dav - at the front it's a 12mm bush with a 12mm bolt. I was aware of the spec change and I checked it before fitting. The only movement there is the little flex available from the rubber component.

The free movement is definitely at the rear bush, as in the first diagram. If I hold the roadwheel and firmly roll it forward and backwards, it moves about 10mm relative to the wheelarch. I can see the rear bush flexing enough to allow that movement, as the blue arrows in first diagram.

My guess is that the rear bush is made of the wrong grade of rubber, and/or it has been pressed in at the wrong alignment to the suspension forces. But these were new parts from a reasonably established supplier, and I don't want to jump off the wrong end of the stick... (?).
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Old 24-08-2011   #7
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Re: Help - New Front Wishbone Too Loose?

Quote Originally Posted by Shadeyman
The rubber front bush does allow some movement but 10mm seems excessive to me.
The 10mm movement is only at the rear bushes - the blue arrows in my first diagram. The front bushes appear to be functioning correctly.

Quote Originally Posted by Shadeyman
So you purchased brand new wishbones then altered them by gluing(araldite) in some other bushes?
No, I bought complete new wishbones and installed them without any alteration. The araldite reference was about the back axle's bushes which I replaced earlier this year with great support from you - sorry for the confusion!
(https://www.fiatforum.com/stilo/2682...-struggle.html)
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Old 24-08-2011   #8
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Re: Help - New Front Wishbone Too Loose?

I'm guessing you've bought a poor copy of a geniuine FIAT part. Though even on the genuine article, that bush is 'voided' round its circumference to allow movement - i.e. it's not a totally solid piece of rubber...

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Old 25-08-2011   #9
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Re: Help - New Front Wishbone Too Loose?


Just been out to the car to check having replaced both wishbones just under 2000 miles ago.

I too get a fair bit of movement and had noticed what I thought a rather flimsy rear bush when jacking the car up but thought nothing of of it.

I guess that's the reason I get a fairly loud thump if I inadvertently hit a pothole otherwise it drives and handles fine with no undue tyre wear so far!

I will keep an eye on them and next time will fit wishbones with a more robust rear bush albeit you can't check them over the internet!
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Old 25-08-2011   #10
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Re: Help - New Front Wishbone Too Loose?

Just checked mine, there's no movement in the bush when trying to rotate the wheels fore and aft. I fitted new genuine Fiat wishbones about 10,000 miles ago.
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Old 25-08-2011   #11
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Re: Help - New Front Wishbone Too Loose?

Quote Originally Posted by Davren View Post
Just checked mine, there's no movement in the bush when trying to rotate the wheels fore and aft. I fitted new genuine Fiat wishbones about 10,000 miles ago.
Thanks Dav - I don't think there should be movement, and I'm going to replace them. I have messaged the supplier to ask if they wish to provide new parts or a refund.
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Old 04-09-2011   #12
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Re: Help - New Front Wishbone Too Loose?

Quick footnote - installed proper quality wishbones today from Shop4_Parts, and that's fixed it - no movement at all. Cost twice as much unfortunately, but you can't cut corners on a part like that.
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Old 04-09-2011   #13
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Re: Help - New Front Wishbone Too Loose?

Glad you got it sorted Steve. A timley reminder to all of us that in some areas, so-called cheapo parts on eBay and the like are a false ecomony...
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Old 04-09-2011   #14
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Re: Help - New Front Wishbone Too Loose?

who did you get them off on ebay and have they contacted you back
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Old 12-09-2011   #15
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Re: Help - New Front Wishbone Too Loose?

Firstline now supply bushes for Stilo wishbones. Has anyone any experience of fitting them?
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