'Cradle shift' alignment??
'Cradle shift' alignment??
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Discussion

Rockatansky

Original Poster:

1,796 posts

204 months

Thursday 9th June 2011
quotequote all
I took the car to a well respected alignment guy today for a 4 wheel check/adjust.

He tells me that the front is out of spec (camber wise) and he's going to have to do a 'cradle shift' alignment to sort it out.

This appears to entail loosening off all the subframe mounts, letting it settle, and then aligning the car appropriately.

The misalignment of the subframe is probably due to the gearbox having been removed around 6 times in the past 8 months or so.....banghead

I've never heard of this procedure before, is it common?

I'd imagine that Kwik Fit (or similar) wouldn't ever offer this as an option.




Mr2Mike

20,143 posts

272 months

Saturday 11th June 2011
quotequote all
I got this utter BS from a local tyre place when I took my wife's Octavia in for alignment. It's an American term that some of these knobends seem to have picked up on. A non pimply-faced, knuckle dragging fitter would call it subframe alignment.

I have very little confidence in the majority of these places being able to perform alignment correctly anyway; we have a big Pro-tyre center in Plymouth with a pukka laser alignment kit and twice they have tried to charge me for four wheel alignment when there were literally no adjustment mechanisms available for the rear suspension. The print out even showed they had managed to change the rear alignment anyway - easily achieved by nudging the reflectors that they clamp onto the wheels; I watched them do it!

adamc987

133 posts

181 months

Tuesday 28th June 2011
quotequote all
Yeah it's just moving the subframe (mainly on vag cars) and you can centralise the camber and get some caster adjustment aswell.what car have you got?

Rockatansky

Original Poster:

1,796 posts

204 months

Tuesday 28th June 2011
quotequote all
It's a Volvo S70R, and it goes in tomorrow for it's alignment.

I trust the guy 100%, he has an excellent reputation as an alignment specialist.

Id just never heard of this process although, thinking about it, it makes sense - particularly in light of the in-and-out of the gearbox recently...

adamc987

133 posts

181 months

Tuesday 28th June 2011
quotequote all
Yeah if the subframe has been dropped to take the gearbox out it will 99% of the time throw either your caster,camber or both out as normally they have elongated bolt holes in the subframe.

suzukilover

3 posts

176 months

Wednesday 27th July 2011
quotequote all
i am a fitter at a tyre place and i am fully trained in wheel alignment laser alignment and 4 wheel alignment when adjusting camber on alot of cars a cradle shift is needed places like quik fit dont get involved in it purely because its too much time and the labour charge would be sky high depending on what car you have you can buy camber bolts to be fitted which makes it easier to adjust

Mr2Mike

20,143 posts

272 months

Wednesday 27th July 2011
quotequote all
suzukilover said:
i am a fitter at a tyre place and i am fully trained in wheel alignment laser alignment and 4 wheel alignment when adjusting camber on alot of cars a cradle shift is needed
Do you work in the US, or are you actually performing subframe alignments?

suzukilover

3 posts

176 months

Thursday 28th July 2011
quotequote all
no i work in england we dont have the facility's to go that deep into it but there is places in england that do get involved