Not that I know... Try fitting the spring around the spool at the opposite end, as shown in the ford-trucks image. Before looking at that pic, I was thinking the spring fits on the large end, and would 'wander around' if fitted to the small end. Small being the thing extended shaft end.
The small spring in the other image could(no idea if it belongs) have fitted to the small diameter shaft end, and would be used to insure the spool did not 'fritter' when was unloaded/off seat. The small would not do much but insure that the spool was held in 'both' directions, and could not flop around, IF it belongs there.
Dunno if it was a belt & suspenders part, or absolutely necessary. If you really want to know, head over to a U-pull site with some wrenches in your pocket, and take one or more apart... Or buy one, and swap. Not necessarily fun, but you would know. I think.
tom
Wow. Went to Ford-Trucks.... The first answer there is one that I posted back in 2014, and I don't remember one word of it. That's a coincidence, I guess.
tom