I hope the pictures are attached: I had to change my seat "up/down" gear today. I did the advanced search but found only one post i thought could help me, but no pictures. So here is my take. First the bench seat lifts out so no need to remove the entire the seat or even deal with the bolts under the car. Second the gear in question has a "standard"nut on it, lock the shaft ABOVE the stop pin and simply unscrew the nut and the fancy castle lock washer. The shaft rides in a bearing, just tap the auger part to drive the bearing and gear forward. The gear in my case came off with mild hand pressure. Watch the orientation of the gear and WATCH THE LITTLE TINY KEY that will fall out of the old gear.