@cpasam posted:Do you have a tutorial for replacing one or all of the springs? I'm okay with soldering, if necessary.
To be honest, I've never had to replace the springs on a postwar motor.
So, let's find out together!
I'll use this junker motor from my spare trucks box.
1) Desolder the wire from the brush holder.
2) Open the spring retaining tab.
3) Rotate the spring. Note that the shorter arm is on the bottom; the spring needs to be reassembled the same way.
4) Open the back gap to accommodate the spring coil.
5) Spring is removed and ready for adjustment or replacement.
6) Reinstall spring. Note, again, that the short leg of the spring goes on the bottom.
7) Spring in position with short leg on top.
8) Lower the long leg into the brush holder. Why this came out blurred, I dunno.
9) Lower the short leg into the holder and fold the tab back over it.
10) Resolder the wire in place.
Et voila, the brush spring, she is removed and replaced! 
Hope this helps!
Mitch
