1950 3100 with annoying issues.
A huge squeak and way too much play, causing a big rattle.
This seat has the complex cable and pulley adjustment apparatus which is a challenge to dig into to fix.
Upon wrastling with the frame trying to get it off, I found where some spot welds had given up on the top of the seat frame near the front corners. So I new then that the seat needs to come out to weld than back up.
Once I figured out how to loosen the cable with the adjustment crew and removed the clamps which lock the cable in place, I got the frame out.
I removed the slides, cleaned them up and greased them and reinstalled the slides, and seat frame.
Now here is the cool part of this episode.
The slides have a screw in the side of it which stops the track from rolling too far forward. You have to take it out in order to disassemble the slide to clean and lube. When I put the screw back in, I neglected to include the lock washer. When I tightened the screw all the way without the lock washer, the end of the screw makes contact with the sliding rail preventing all movement of the slide, back and forth, side to side and up and down. That was exactly what I wanted to accomplish from the get go!
I keep my seat all the way back and have zero need to ever move it forward.
I left the screws loosey goosey so that I could move the seat back and forth in order to do all of the cable adjustments and to put the 2 return springs back on.
Once that was done, I slide the seat all the way back and tighten those two screws without their lock washers and now the seat has little to no movement and no squeaks.
