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-   -   Alignment spec's after camber/caster repair bolt, I screwed up (http://www.peachparts.com/shopforum/tech-help/319600-alignment-specs-after-camber-caster-repair-bolt-i-screwed-up.html)

carbizindio 06-09-2012 09:57 PM

Alignment spec's after camber/caster repair bolt, I screwed up
 
This is on a 2005 C55 but the repair bolt I'm assuming relates to other cars.

Anyways the dealer said I needed the repair bolts to get the alignment back in to spec. So I purchased the repair bolts for the torque strut/radius rod and the cross strut/transverse link. The bolts I removed from the torque strut looked like the new bolts so I'm guessing they were installed already but I replaced them anyways, the cross strut bolts didn't have the cut outs in the bolts so I installed the repair bolts. After all the work is completed I took the car back to the dealer to pay for the 2nd alignment. I was told the repair bolts were not installed correctly and they would have to be adjusted.

Here is my alignment sheet,

http://i69.photobucket.com/albums/i7...o/c55align.png

It looks like every thing is ok besides the front caster. Now I was thinking of doing a 180 degree switch on both torque strut repair bolts but than I was thinking the car would just start pulling the other way.

Any advise on which repair bolts to flip around? or any thing else I should know?

mbdoc 06-11-2012 08:11 AM

Adjustment bolts are designed for MINOR corrections of 1/2deg or less.

The caster is way too far out for the bolts to make any real change.

carbizindio 06-11-2012 11:05 AM

I noticed both torque strut repair bolts were not installed correctly. I adjusted the caster on the torque strut, I moved the L side wheel backwards 1 notch=aprox 4mm and the R side forwards 1 notch=aprox 4mm. About 90% of the pull is gone, I notice the steering wheel is 1-3 degrees off but this could have been there before.

I read some where that when you change the torque strut setting than your camber changes, is this true? I'm trying to decide if I need to send it back in to the alignment shop and or if I need to make sure the cross strut repair bolts are installed correctly?

Thanks for the reply, after studying the suspension geometry I'm now realizing I should of stayed awake in math class.

joshuajeeper 06-11-2012 09:09 PM

A caster bolt is designed to add or subtract about 40-45' while also affecting camber about 5-10'. If you install a camber bolt, it'll change camber by about 15-25' and caster about 10-15'. Anymore than that is an indication of something being bent or very worn out. Those are an average change for multi-link front suspensions.

carbizindio 06-13-2012 12:40 AM

Quote:

Originally Posted by joshuajeeper (Post 2953982)
A caster bolt is designed to add or subtract about 40-45' while also affecting camber about 5-10'. If you install a camber bolt, it'll change camber by about 15-25' and caster about 10-15'. Anymore than that is an indication of something being bent or very worn out. Those are an average change for multi-link front suspensions.

Outstanding information thank you. No matter how many adjustments I can make with estimating the changes to my alignment spec read out I still can't see my self avoiding another alignment so I have simply left it in the hands of the pros.

I know I have some cracking in the torque strut bushings and spring issues but I think they can get pretty close to an acceptable range.


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