Brake drum wear

Good for both Spring 1 and Spring 2

If your Spring brake is not releasing smoothly, first check whether the cable is kinked or riding on top of itself. If the cable looks correct, the most likely cause is that the drum has become too rough—often with small grooves worn into the surface. Use coarse sandpaper to lightly sand the inside of the drum, then reattach the cable and test the brake. This is easiest to evaluate with a warp on the loom so you can test under tension. This simple fix resolves about 90% of brake-related issues and typically becomes necessary several years after purchasing a new loom.