Had 4x4 trooper front wheels up on ramps. I couldn't reach one grease nipple on the rear driveshaft so I reversed a 1/4 rotation of the wheels or so...forgot that the trucks front wheels were now on the slope of the ramp and started to jack up the rear to get the truck level for rear diff fluid change...truck rolled back over me.

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82 300D....went to MB heaven
90 350 SDL....excercising con rods