Suspension

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ianw48

Member
Joined
Feb 28, 2018
Messages
34
Location
DL8 5ND NORTH YORKSHIRE
Car
MERCEDES B200 CDI SE 2006, C180 coupe 2007
Hi
Should front coil springs be replaced in pairs please. How long does it take to replace each spring.
Is it a diy or specialist? Mercedes B class 2.0 cdi 2006. Thank you
 
Yes always in pairs and of the right weight for the car. They should have colour codes on them,replacing them should be around an hour per side and may require the use of a spring compressor.
 
Hi,
I have heard that springs should be replaced in pairs but I would dispute the necessity.
If one spring is broken and is being replaced with an identical MB one, then replacing it individually is OK.

A spring on my previous S211 E220 Merc snapped and I replaced it with an identical one from MB. It was perfect, the car was level and it handled as it should.

If you are replacing spring for another reason, i.e. to lower the car, then they obviously must be replaced in pairs.

The spring has colour bands painted on it. Mine had a yellow and a green band and that is important when purchasing a replacement. I ended up showing the parts manager a photo of the coloured bands on the old spring to convince him as he was going to order the wrong one.

I presume it is the same on the B Class.

If you are doing it yourself, you will need spring compressors to compress the spring enough to get it bolted onto the strut.
 
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As above ^^^ The fact that you have to ask is indication (respectfully) that half of this job is not DIY for you. Removing and re installing a suspension strut ,shock and spring together is pretty straight forward for someone with the correct tools and a bit of savvy, removing the shock from within the spring is not a job to be taken lightly, find a garage that has a spring compression unit , ask them how much they will charge to replace the spring on the strut(s) that you intend to hand them. Once happy go ahead and order your spring(s). Good luck :thumb: let us know how you get on.
 
I've replaced just one spring in the past and it was dead level. If it hadn't been I would have replaced both. Compressing springs is not for the faint hearted and potentially quite dangerous.
 
Hi,
I have heard that springs should be replaced in pairs but I would dispute the necessity.
If one spring is broken and is being replaced with an identical MB one, then replacing it individually is OK.
WIS recommended that springs.shock absorbers be replaced as pairs on car with over 80k km on the clock

The spring has colour bands painted on it. Mine had a yellow and a green band and that is important when purchasing a replacement. I ended up showing the parts manager a photo of the coloured bands on the old spring to convince him as he was going to order the wrong one.

I presume it is the same on the B Class.
It is on all Mercs. Springs should be ordered using the VIN as things such as optional equipment is taken into account when specifying springs.

If you are doing it yourself, you will need spring compressors to compress the spring enough to get it bolted onto the strut.
Not just your standard spring compressor either, they are not man enough. You need the heavy duty collar type. TBH it's safer to get a garage to split the strut for you and fit the new spring
 
Recently had the need for a replacement front spring on my B Class 2007 and only had one replaced. The car was level and handled as previous.
 
I think there is a distinct difference between the need to replace springs in pairs and dampers in pairs. While springs won't change their spring rate dampers will most certainly change their damping characteristics with age so unless nearly new, dampers should always be replaced in pairs.
 

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