Decided to tackle the power seat gears on the drivers side today. I also have a clunk in the seat under acceleration and braking. Not a lot, just enough to be annoying. Did a search on IH8MUD and some folks pointed to the gears. I had ordered a full set from Gamiviti so figured I'd dig in and get it done.
First step was to wait for a break in the rain and yank the seat. Good opportunity to vacuum where the seat was.
On disassembly I find this little screw.
Somebody has serviced this chair before it appears. And low and behold, thank goodness I watched the Gamiviti youtube video and did the passenger seat first because whoever did the work forgot to put in the back washers. I might have missed that if I hadn't watched the video and done the other seat.
I grabbed one of the front washers and headed to the hardware store. An hour later I'm home and I find I made a small mistake. Yup, I forgot that the rear washer is slightly larger than the front washer. In fact, it's very precise to be able to fit over the splines but not over the main shaft in the back. I drilled out the washers I bought and installed it all and no more clunk. Going to be much better from here on out.