Suspension Refresh front and rear
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Joined: Dec 2012
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2007 CLK350 Convertible
Suspension Refresh front and rear
164K on wife's 07 CLK350 so its well past time for a suspension refresh. What I wanted to know was if the front and rear springs use the same pads? I am getting a creaking sound from front end, already lubed sway bar bushing, and wanted to see if possibly from spring pad in front? Creaking noise is most of the time turning wheel when car is still. Now that I think about it, could be worn ball joints as well. Also getting creaking noise in rear going over speed bumps.
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I am fairly certain the pads are totally different front and rear since the rear setup is a traditional shock and the front is a McPherson strut. Front end noises are usually either the anti-sway bar bushings, or the frame bushings for the torque struts (a.k.a. upper control arms). Ball joints rarely make any noises - they just get sloppy.
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Here are the parts:
A2033200273 - Front bearing left/right (sits under the bumper)
A2033220344 - Front bumper left
A2033220444 - Front bumper right
For the rear shims, there are four possible part numbers:
A2103250184
A2103250284
A2103250384
A2103250484
The 9th digit represents the number of "burls" on the springs that the shims must match. To calculate the burls, you need to add up the point based on options installed in the car:
http://benzbits.com/w209/RearShimPointsCalculator.pdf
A2033200273 - Front bearing left/right (sits under the bumper)
A2033220344 - Front bumper left
A2033220444 - Front bumper right
For the rear shims, there are four possible part numbers:
A2103250184
A2103250284
A2103250384
A2103250484
The 9th digit represents the number of "burls" on the springs that the shims must match. To calculate the burls, you need to add up the point based on options installed in the car:
http://benzbits.com/w209/RearShimPointsCalculator.pdf
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Junior Member
Joined: Sep 2016
Posts: 65
Likes: 2
From: Portugal
CLS 320 CDI W219
Hi, if you hear that sound when turning have you considered the top mounts of the shock absorbers were the spheres are they detiorate with time and do that cracking sound when turning. Control arms or tie rods usually do a metallic noise
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Thread Starter
Member
Joined: Dec 2012
Posts: 86
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2007 CLK350 Convertible
Good point. I am replacing the strut mounts as well as the pads, control arms as well as the rods and sway bar links as well. Alot of miles on OE suspension so it's time. Car rides so rough now and is hard to enjoy. I remember when the car was new how the car was firm but soaked up bumps well. Can't wait to get to that point again
Junior Member
Joined: May 2008
Posts: 53
Likes: 6
From: New York
2007 clk550, 2006 clk500 (sold)
redciv1, regarding spring pads, the fronts on my clk550 did NOT have any spring pads. The rears had 2 burr pad on one side & 3 burr pad on the other. The pads are reusable but I replaced both sides with 2 burr pads & no issues.
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Joined: Dec 2012
Posts: 86
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2007 CLK350 Convertible
Thanks 0zranvest. Can anyone else confirm whether MB used the pads in certain models? Looking to order parts this week.
Junior Member
Joined: Sep 2016
Posts: 65
Likes: 2
From: Portugal
CLS 320 CDI W219
I did the control arm and tie rod and dwaybar bushes change last weekend broke 2 extractors lol had to use the hammer a lot but in the end after allignment feels like new. They were still original with 16 years and 175k km
Thread Starter
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2007 CLK350 Convertible
You only changed the bushes in the control arm or you did a replacement of entire arm?
Thread Starter
Member
Joined: Dec 2012
Posts: 86
Likes: 0
2007 CLK350 Convertible
Thread Starter
Member
Joined: Dec 2012
Posts: 86
Likes: 0
2007 CLK350 Convertible
Here are the parts:
A2033200273 - Front bearing left/right (sits under the bumper)
A2033220344 - Front bumper left
A2033220444 - Front bumper right
For the rear shims, there are four possible part numbers:
A2103250184
A2103250284
A2103250384
A2103250484
The 9th digit represents the number of "burls" on the springs that the shims must match. To calculate the burls, you need to add up the point based on options installed in the car:
http://benzbits.com/w209/RearShimPointsCalculator.pdf
A2033200273 - Front bearing left/right (sits under the bumper)
A2033220344 - Front bumper left
A2033220444 - Front bumper right
For the rear shims, there are four possible part numbers:
A2103250184
A2103250284
A2103250384
A2103250484
The 9th digit represents the number of "burls" on the springs that the shims must match. To calculate the burls, you need to add up the point based on options installed in the car:
http://benzbits.com/w209/RearShimPointsCalculator.pdf
