The threads stripping (shearing off) is a fundamental design (sizing) and/or manufacturing (material/process quality) problem that reeks of product liability issues. This needs to be brought up to LRNA with pretty high urgency.
It's one thing (itself not trivial) if the design requires a finicky alignment for the jack not to see offset loading or moments that can cause undesired loading leading to buckling. It's another thing entirely for the threads to shear off or the rod to fail under torsion while jacking up the car.
That is seriously messed up. I've never used mine so I don't know personally. I'm simply going by what is reported here.
Lifting equipment usually has some pretty serious factor of safety put in place. This should never be happening.
It’s a 12 year old jack that’s been used who knows how many times, in who knows what way. Jacking up a vehicle is risky business no matter what you use and I treat it as such. Unless you’re off-roading one rarely needs a jack. If you’re off road you shouldn’t use the factory jack. I’m not one of those guys that thinks LRNA is liable for a vehicle that’s been out of their hands for as long as mine has been.
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