Jcruz559

Hit a curb a while back at a speed of 15 mph, replaced every arm in the rear including subframe and still didn’t fix the issue. Drove it as well and the axles made no noise.

brauhaus313

Is there a question here?

Jcruz559

yeah, what could be causing the car to crabwalk?

brauhaus313

Did you get an alignment after you did all that work?

Solo wing

I read somewhere that a wrong thrustline angle can cause that.
When you go for an alignment make sure they adjust the rear angle first, then the front.
Even better, go to a Mercedes dealer for an alignment. I have always had issues with alignments done by non-Mercedes dealers.

Good luck.

prktkljokr

Did you change the hub?, I have done 2 cars now with bent rear suspension, it seams they bend everything from the hub to the crossmember with the slightest of taps.
Also when fitting the crossmember there is a little bit of wiggle room on the bolts, I have had to align the crossmember to the body on a coupe that was chewing tyres out after a change, measuring from the centre of the hub to a point in the body, was only out slightly but enough to make a difference when wheel aligning.

chassis

Something is bent, broken or out of adjustment. Possibilities:

Hub
Knuckle
Wheel bearing
Suspension joints/bushings
Control arms/linkages
Subframe
Body attachment

Jcruz559

I changed everything but the hub. I’m hoping it’s somethint as simple as that, not a bent axle

Jcruz559

changed the subframe, all rear arms. Went to get an alignment was told it wasn’t possible due to something being bent/out of place. You can see in the pictures the wheel sticks out a bit. I tried adjusting the toe but even when set to the Mac degree it still sticks out. Originally I struck the rear right side And it was the rear right which would stick out, but after replacing everything It shifted to the left side.

PJmak

The question is....how are your tires?


I had this issue on my w202 c43. Seemed to get better witn new tires and road force balance

Design4111

Jcruz559

Do you have any data of the current wheel alignment setup? (i.e. how it is now with the crab-walk)

Camber, toe and Thrust angle? (also called cross camber, individual toe, cross toe etc.)

Also, do you have the current "vehicle level ready for driving" angles and ride height?

Jcruz559

[QUOTE=PJmak;8106327]The question is....how are your tires?


I had this issue on my w202 c43. Seemed to get better witn new tires and road force balance[/


The tires aren’t the best, but I’m not sure getting some new tires would fix much.

Jcruz559

zero data. After putting the new crossmember and getting no results I just gave up and let the car sit. Been a little over a year now.

Design4111

Jcruz559

OK, I know the w203 (including amg) is fairly sensitive when replacing suspension components. Especially if you are running narrow/wide config.
I think the best best is to get initial values from the alignment shop, even if they cannot adjust anything but supply the current values. Make sure that they have a laser (Hunter, Bean etc.). Dealer would be nice as they (should, but not always) have the correct OEM adaptors (5 hole). The OEM adaptors are less sensitive to a bent wheel.

When you replaced the components, did you make sure to tighten it "ready for driving" condition?
(i.e. you loosely tighten the bolts, drive the car +- 2 meters back and forward, on level surface. Do not jack up the car, tighten the bolts to correct spec without disturbing weight distribution on all four corners). Best outcome is on a four post lift or if you have a pit with level floors all around.

I do not know all the torque specs, but I think it is 70 N.m. for the smaller bolts and 110 (or 120) N.m. for the bigger bolt.
You have to double check the spec though.

If you did not have the crawling condition before with "cheap or worn" tires, than I would skip it for now. However, sitting for one year could result in flat-spots, unless you rotated regularly.

Jcruz559

after installing everything I left all bolts hand tight, but that’s about it. I haven’t tightened any after that, just gave up. But I’m determined to get her fixed, yeah it’s looking like Mercedes is gonna be my best option. I’m hoping they can fix it with just an alignment.

Jcruz559

Okay so I figured out what was causing my car to be crabwalking. I purchased a crossmember from the junkyard to replace my bent one. But it turns out I replaced it with another bent crossmember. Are these all the same on all w203 models ? (55,32,230,320,etc.)

Design4111

Did you ever resolved the issue? Was it cross-member or something else?