How to Tighten the Seat Back Adjuster on a 3x8

The backrest of my passenger seat slowly tilts backward (reclines) until it’s headrest rests against the firewall (or stored roof panel). I must periodically rotate the big adjustment wheel on the side of the seat to return it to an upright position. My driver’s seat is fine.

The seat back appears to move from normal vibrations of the moving vehicle and takes dozens of miles before it has fully reclined. Not a biggie, but I would like to fix it. It can sit in the garage forever and it doesn’t move.

Does anyone know how to tighten the mechanism of the seat back adjuster?

 

Sent you a response. Thank you!

Per Robert's suggestion, the center of the knob pop's off to expose part of the mechanism. However, at least on my seat, but there does not appear to be any means of adjustment in there.

There appears to be an unusually shaped snap-fit ring with no means for adjustment. The snap ring looks like it should be rotatable some way, but it would rotate on a fixed axle so wouldn't tighten anything.

The seat is out of the car right now, so I have clear access to the sides, back and bottom. I still can't figure it out.