Can't argue with a word you wrote, but there is a simple solution that works on any strut. Use a half inch impact with a six point impact socket but instead of just spinning it on, snap the trigger repeatedly for just an instant each time. Each time it will shock the nut on just a little more before the shaft starts to spin. "Zip, zip, zip" will do it in less than a dozen tries. Be aware that the upper mount will start to spin when the nut gets tight but it scares more than hurts if you're holding onto it.
Don't let the shaft spin too long as that can overheat and damage the seal. In the rare event that doesn't work, hold onto the rubber strut cushion on the shaft. Squeezing it will add enough friction to help that nut go on.
Wednesday, June 8th, 2011 AT 2:57 AM