Does anyone know how to get the lower cushion/pan removed from an older Isringhausen seat? I can find newer manuals online but not this older style. Can’t see any bolts and don’t want to drill out the billow rivets if I don’t have to.
I think if you unclip the rubber bellows there are some screws at the front of the cushion facing forward , it will also help if you connect your airline with a blower to the airbag to lift the seat so you have more room to see what you need to get at .
some had a keyhole slot on the metal base that some white plastic clips slide in to by pulling forward.
The torque screws we’re the ticket! I saw some that had the key hole slots, but this was the torque screws in the front then a riveted metal clip in the rear.
2 screws under the front lip of the cushion.
Also while you're under there check the cushion frame for cracks on the inside guides where the front/rear adjusters slide. common on the earlier frames getting on in age.