As far as I can tell, the "suspension" seat did not change when the L2800 was changed to the L3200. The springs in mine, did NOT fail but the posts that they were attached to both broke. I replaced the welded bars with a bolt that supported both springs.
But before digging into the springs, the seats were/are prone to getting stuck in the down position. I have a very old video (below) that you'll need to click on to view at my old youtube location (I don't know how to make it viewable via the link).
Basically, if you have a good pry bar, you can stick in from the rear of the tractor and work it up and it will stick it back down (which happens a few dozen times until you work it free). Get a can of penetrating oil and go to town spraying it. Mine did not move at all when I first started working on it. It was stuck in the down position.
I did mine in my shop, but you can do it all on the tractor.... Removing the seat and then the suspension section is pretty easy. 4 bolts if I remember correctly.