Lower control arm bushings - Page 3 - Mercedes-Benz Forum
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post #21 of 46 (permalink) Old 12-18-2015, 10:24 AM
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Originally Posted by benz-SL500-newbie View Post
Mine are worn and in need of replacement too.

If I get the replacement control arms with the bushings already pressed in, is this a easy job for an amature DIY person in the garage without a lift? I do my own brakes and other misc repairs, and can follow instructions reasonably well. But I tend to leave the engine, drivetrain, and suspension to the experts though. That way if I mess up I can still drive it to the shop.

Is this something that sounds harder than it is? Or is it best to have a shop do it? From reading the thread it looks like some specialized tools may be necessary and involve some skill or bravery if it means hammering on things.

Thoughts?
Yes, you can do this in your garage like I did. You'll need a jack, jack stands, and a few wrenches to pull the bolts out. Hardest part will be breaking the ball joint at the wheel end, which requires a ball joint breaker.
Check out this thread by user -COBRA- starting here: https://www.benzworld.org/forums/r230...l#post10381241
Or this DIY from the W211 forum (same process and tools):https://www.benzworld.org/forums/w211...ml#post3416632


Here's a thought - I'm not far away in Parker, CO and have the necessary tools to break the ball joint and press the bushings out. You can buy or borrow the tools from me. Or bring the arm and new bushings, and I'll help you press the bushings in & out. Send me a PM if interested. Kelly

Last edited by kbob999; 12-18-2015 at 10:38 AM. Reason: Added DIY link
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post #22 of 46 (permalink) Old 12-18-2015, 01:59 PM
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That is so nice!
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post #23 of 46 (permalink) Old 12-21-2015, 06:38 PM
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Originally Posted by TTtodd View Post
Installed the new bushings today. I lined up the dots of the old bushing and made a mark on the control arm. Then made a vertical line on the new bushings where the dots are. Then line everything up and press.
Did your new outer washers fit onto the new bushing center OK?
I just received my genuine Mercedes replacement parts and the hole in the new washers seems to be a few microns too small to fit onto the bushing.

I'm hoping this will cure the single knock I get when backing up. My dealer blames the struts and the bushings, I am hoping just the $100 bushings will do it.
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post #24 of 46 (permalink) Old 12-22-2015, 07:26 AM
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My washers also did not fit the new bushings, so I installed w/o them. They are intended to prevent the arm from digging into the aluminum subframe if (when) the bushings fail.
Since the bushings last ~50K miles, I'll be checking them every oil change, and will replace again before they get to the failure point.
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post #25 of 46 (permalink) Old 12-22-2015, 09:15 PM
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I fixed my control arm bushing washer problem with a $100 12 ton press from Harbor Freight. (I needed it anyway to press out the old parts then press in the new bushings.)

However the press could not push out the bushings (A 2113332914) from the forward control arms, so I will have to get that done elsewhere or replace the whole control arms.

I noticed that there was indeed some play and clunking in the front right strut and the ball joint at the lower end, plus I have had a few error codes indicating 'front right too low' so I ordered a replacement strut from Arnott to install as I go around doing the accumulators and ABC fluid flush. Hopefully this will remove any error codes and all the clunking and creaking from the front suspension.
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post #26 of 46 (permalink) Old 12-23-2015, 07:51 AM
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Why could you not press out the bushings on the forward arms?
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post #27 of 46 (permalink) Old 12-23-2015, 08:23 AM
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The 12 ton press didn't have enough power to push out the old bushings on the forward control arms. I may try some heat alongside pressing, but they are well and truly stuck in place.
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post #28 of 46 (permalink) Old 12-23-2015, 08:30 AM
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Good to know! I have the HF 20T. I am kind of worried about having enough bite on the control arm itself.
Thanks man!
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post #29 of 46 (permalink) Old 12-23-2015, 08:36 AM
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Quote:
Originally Posted by SpawnyWhippet View Post
The 12 ton press didn't have enough power to push out the old bushings on the forward control arms. I may try some heat alongside pressing, but they are well and truly stuck in place.
Yep, been there done that, after I assembled the 12Ton, I nudged it by hand a few times, and didnt like the dance it did for me, so I took it back apart and went back and exchanged it for the 20Ton version... night and day difference...

the 12 was way too flimsy... 20 has never been stomped yet, in 4 years of usage...
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post #30 of 46 (permalink) Old 12-23-2015, 08:50 AM
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Maybe I'll do that also, but I did follow the guide of one of the reviewers on the HF website about how to make the 12 ton a lot more stable and usable with some minor mods to the assembly process.
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