W210 Rear Control Arm Replacement

NigelSpicer

Member
Joined
Sep 26, 2021
Messages
23
Reaction score
6
Your Mercedes
e300TD/1999/3L
I have a 1999 e300td estate W210.225 and am about to attempt (bit scared in truth) to replace the rear lower control arms which I think may lead to having to replace the SLS hydraulic rams. The reason I say this is because the lower two bolt fitting of the ram to the control arm is heavily corroded on both sides and the clip around the boot has gone- although they work fine and no leaks. I've talked to Sachs and rather bizarrely they didn't want to discuss any technical detail of these parts because Mercedes own the design. After some pushing they say there is no replacement part for this lower corroded section- so if I have to replace them then it looks like new ones. Mercedes have quoted £420 +vat/unit so that is out. I could get a Sachs unit (102420) online for about £250/unit which is still pretty horrendous but better- wish they were normal struts!
My question to the forum is even though the thread on here about the SLS has been very helpful to me in understanding the task ahead I'm still a bit worried about if I do disconnect the ram's hydraulic line will I end up with a problem of getting air out the system once a new one is fitted? ie is there a procedure for refitting the line and making sure it is bled right through or will it somehow self bleed itself and the SLS will sort itself out. I fear doing something silly like wrecking the PAS pump because of air in the system or the SLS leaves the car at different levels on each side. Could anyone offer me some advice. (Also if anyone wants to throw in any do's and dont's regarding the whole process of replacing the control arm- I also intend to replace the sway bar link and the axle bush- then that would be most welcome.
Thank you
 

Naraic

Moderator
Joined
Mar 4, 2010
Messages
10,686
Reaction score
1,274
Your Mercedes
2005 CL500.
It is self bleeding
 
OP
N

NigelSpicer

Member
Joined
Sep 26, 2021
Messages
23
Reaction score
6
Your Mercedes
e300TD/1999/3L
  • Thread Starter
  • Thread starter
  • #3
Naraic thank you for your reply. So in summary: disconnect hydraulic line to old one. Let whatever fluid wants to drain out do so. Fit and plumb in the new ram. Refill reservoir with amount that drained out. Run engine and it will all sort itself out. Is that correct?
 


AMF Automotive - We are an independent Mercedes-Benz and AMG specialist located in Paddock Wood, Kent, with full Mercedes Diagnostic equipment. We offer a full portfolio of tuning options for AMGs and can cater for all your Mercedes needs.
Tel: 0203 384 4644www.amfmercedes.com/
Top Bottom