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Author Topic: how do you know when to replace a wishbone?  (Read 4182 times)

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family guy

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how do you know when to replace a wishbone?
« on: 10 September 2011, 22:53:45 »
as above, is there a easy way to tell if the wishbones need replacing? reason being is that the camber is massively out on the front o/s eheel on my omega 2.5 cdx and im hoping it just needs realigning. ive got the car booked in at WIM in 2 weeks and i dont want to get there and be told that the wishbone needs changing before steering geometry can be set up......
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cem_devecioglu

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Re: how do you know when to replace a wishbone?
« Reply #1 on: 10 September 2011, 23:18:58 »
when the bushes (original)  are finished they will leak oil..

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omegod

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Re: how do you know when to replace a wishbone?
« Reply #2 on: 10 September 2011, 23:40:24 »
Move the car forward a wee bit then slam on, if a friend watches the front wheel and it moves backwards in the arch when you do this it's a decent indicator that the bush is shot. Thats what wheels in motion did with mine anyway.

You can also jack it up and give the bush a wiggle with a pry bar to see if there is movement. I thought mine were ok but had to have them replaced by WIM, total bill of £300. Would have been cheaper and more sensible to have thrown some cheap wishbones on prior to going there, sounds like that may be the best option yourself mate.
« Last Edit: 10 September 2011, 23:43:49 by omegod »
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Stallion

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Re: how do you know when to replace a wishbone?
« Reply #3 on: 10 September 2011, 23:55:15 »
you should be able to feel a judder over speedhumps or sudden braking. (pretty noticable with fully worned out wishbone bushes)
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albitz

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Re: how do you know when to replace a wishbone?
« Reply #4 on: 10 September 2011, 23:55:53 »
Thought I might have to replace mine this year, but they didnt fail the MOT so they are obviously in perfect condition. ;) ;D
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feeutfo

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Re: how do you know when to replace a wishbone?
« Reply #5 on: 11 September 2011, 01:13:30 »
Put your foot on top of the wheel, under the arch if there's room. Then push the wheel back, then forward. Or for and aft. It should be farely solid. If it slops about by more than,say,10mill either way the bushes are fubar. Similar test as described earlier by watching the wheels under braking, or bumping up a small down in the kerb, such as an entrance to a drive way. If the wheel moves backwards as it hits the bump, of say an inch high, fubar bushes.

Levering with a bar, should feel very solid, but there is movement as that's how they work to a point. Any sign of cracks or splits in either bush, ESP the front when levered to toe out and shining a torch in to the black rubber itself, replace.

If the rearward vertical bush is ok, fit Polly to the front. No need to remove the wishbone, fit Polly in situ.

Hth
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cem_devecioglu

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Re: how do you know when to replace a wishbone?
« Reply #6 on: 11 September 2011, 09:25:52 »
ok..  the bushes are there for a reason..

to play forward and backward.. ;D

determining the exact point when they give up is not that easy.. they will give some negative feedback in steering and this will increase in time.. but the last nail on coffin is they start to loose oil..

and if you start to be suspicious about them on every steering play you have to change frequently :P :D
« Last Edit: 11 September 2011, 09:27:14 by cem_devecioglu »
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family guy

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Re: how do you know when to replace a wishbone?
« Reply #7 on: 11 September 2011, 09:59:02 »

my mechanicaL knowlege in non-exsistant so i dont have a clue but thanks for the advice anyway people. its just past a mot so it they should be ok? i dont think there is play in the bush, the wheel feels solid so i think its ok.

« Last Edit: 11 September 2011, 10:10:30 by jimbob »
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tunnie

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Re: how do you know when to replace a wishbone?
« Reply #8 on: 11 September 2011, 10:03:32 »
It depends, mine are totally shot & under heavy braking the car wonders about. If they are like jelly it could be failed.

I've just asked WIM if they are able to fit Bushes on site, as I plan to fit a pair of "poly" bushes which make the front end a lot stiffer.

I'll let you know what they say  :y

Do you have any DIY car tools? Jack? Big crowbar? If you can, jack the car up, or park it on a pavement, underneath the car where the wishbone meets the chassis, put big screw driver/crowbar in there, wiggle it, see how much the bush/wishbone moves, there should only be a slight movement.
« Last Edit: 11 September 2011, 10:10:10 by jimbob »
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Jimbob

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Re: how do you know when to replace a wishbone?
« Reply #9 on: 11 September 2011, 10:11:01 »
Pruned of unwelcoming negativity.

Please keep on topic, and play nicely.
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tunnie

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Re: how do you know when to replace a wishbone?
« Reply #10 on: 11 September 2011, 10:12:30 »
Quote
my mechanicaL knowlege in non-exsistant so i dont have a clue but thanks for the advice anyway people. its just past a mot so it they should be ok? i dont think there is play in the bush, the wheel feels solid so i think its ok.


Assuming you are pushing the wheel side to side and up down externally, that does not really test the bush, thats looking for play in the steering idler arm & track rod ends.

Good news if there is no movement, then they are fine!  :)
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family guy

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Re: how do you know when to replace a wishbone?
« Reply #11 on: 11 September 2011, 10:24:00 »
ok guys- update.
just had alook through the old mot cetificates (only bought the car 4 days ago) and last year (oct 2010) it failed for having an imcomplete offside coil spring and also

'nearside front lower suspension arm rubber bush deteriated resulting in excessive movement'

looking through the reciepts the coil has been replced and the arm was also replaced.

aloso looking through the reciepts (mountains of reciepts came with the car)  in june thuis year the car had a new lower arm (dosent say which side but presumebly it must have been the o/s if the n/s was done last year?)

2 days after the mot failure last year it passed so im thinking, also bearing in mind that another arm was replaced this year, and this is just a hunch, that they have changed the arms and springs and not done the camber afterwards? there is a receiept for tracking done in june this year but as ive read on this forum, that does nowt on a omega. 
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mark.adams

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Re: how do you know when to replace a wishbone?
« Reply #12 on: 11 September 2011, 10:28:47 »
What bushes do we fit and where do we get them from?
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cem_devecioglu

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Re: how do you know when to replace a wishbone?
« Reply #13 on: 11 September 2011, 11:00:52 »
Quote
What bushes do we fit and where do we get them from?

this may give some idea or you may use originals
http://www.omegaowners.com/forum/YaBB.pl?num=1314470404
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Andy B

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Re: how do you know when to replace a wishbone?
« Reply #14 on: 11 September 2011, 11:01:30 »
Quote
....looking through the reciepts the coil has been repalced and the arm was also replaced.... 

Hopefully BOTH springs were changed  ;)
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