`80's specialized hardrock - suntour xcm rear derailleur blew apart?
Picked up an old hardrock to flip, as I pulled the rear wheel off, moving the rear derailleur out of the way to get the wheel out, the swingarm deal popped out of place.
inside, there is a coil spring with a tab at each end.
inside the derailleur side, there's 2 pin holes, and the swingarm has a d-shaped grooved center lock and also has 2 holes for the spring tab to fit into.
After lots of fussing and cursing, I got it back together, but now the spring is very weak so it doesn't take the slack out of the chain, shifting still works fine but the chain goes slack now.
do I just need to take it apart and use a different tab hole for the spring, or does the spring need to be wound up?
Will take pictures if it would help, but I can't imagine I'm the only one who has done this.