you do not need to remove the coil spring. to remove the top nut you need a 22 mm wrench and a 7mm (or 5mm, can't remember) allen wrench. then for the bottom bolts you need a 19mm (or 17mm not sure) again these are all simple tools. loosen the top nut then work on the bottom bolts. you will also need some loctite to apply to the bolts at the bottom. for one of the bolts at the bottom you will need a socket and wrench to hold it in place while you loosen it same as with the 22mm open wrench and allen wrench at the top. relatively simple job. make sure you disconnect the plastic brake bracket from the strut.. good luck

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1990 190E 3.0L