Slk200 removal of coil spring top nut - Mercedes Benz SLK Forum

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#1 Old 06-17-2019
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Slk200 removal of coil spring top nut

Hi to all
Just compressed the front coil spring to replace but stumped by top nut and hex spindle
I tried to free the nut by striking sharply with a hammer but the top plate just spins with it
Any ideas appreciated ,I am using a 21 mm socket and the spindle is a 7 mm hex.
Cheers
Paul
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#2 Old 06-17-2019
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#3 Old 06-17-2019
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I didn’t have this problem. Try using some penetrating spray. Mine came lose easily.

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#4 Old 06-17-2019
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Hi thanks ,
So did you just strike with a hammer how did you stop the centre spindle from spinning
Cheers
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#5 Old 06-17-2019
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Lift the rubber dust boot up on the spindle and put a pare of mole grips on the shaft as close to the top as you can get it .
Then hold the mole grips and free off top nut.
Mole grips will go between the gap in the coil


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#6 Old 06-17-2019
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This may sound like a stupid question but it does undo anti - clockwise ?
I did try using a g clamp to stop the plate spinning when I strike the nut but no luck ,I have put some WD 40 on and will have be another go tomorrow
Cheers
Paul
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#7 Old 06-17-2019
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I use a special tool to hold the shaft as to cause no damage to shaft .
Nut undoes Anti clockwise .
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#8 Old 06-17-2019
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Thanks again , I have not compressed the spring sufficiently to get mole grips in there. I am thinking about a heavy duty off-set ring spanner and a 7 mm hex to hold the shaft. Although I have a good set of spring compressors I am a bit nervous about compressing it any more
I just need to hold of the spanner and hex wrench , I have every other size except those c'est la vie
Thanks again
Paul
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#9 Old 06-17-2019
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I used an electric impact driver to undo mine.


The rotation, and impacting eventually jars the nut off as the damper rod turns.


No need to hold the damper rod



Used one of these




https://www.machinemart.co.uk/p/clar...impact-wrench/


but only Ł36 a few years ago!
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#10 Old 06-26-2019
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HI to all quick update.
Managed to get the nut off using 7 mm hex/Allen key and a 21mm socket .
Using a mole wrench to clamp the socket did the job. I bought a decent set of spring compressors from screw -fix and managed to compress the spring enough to loosen the top hat /nut. However the only way I could compress sufficiently was to clamp the compressor onto the underside of the spring support plate. Getting it back on was a different matter as I could not then clamp onto the plate. I tried may configurations but ended up taking it to a local garage who did it using a hydraulic compressor, even that wasn't straightforward, that front spring is a awkward shape.
Anyhow sorted at last thanks for replies
Paul
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#11 Old 3 Weeks Ago
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You need a 7mm Allen wrench and one of these:

https://www.amazon.com/Schwaben-0030...gateway&sr=8-1
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