Also, if the pads have been contaminated by oil, grease, brake fluid, etc. They can be cleaned but may have a tendancy to be grabby.
On the Erwhipee truck, when I put new drums on it, The adjustment had to be turned almost all the way in. A big difference in how well the brakes work with smaller diameter drums.
If the drums are turned out to far, the possibility of the wheel cylinder piston extending past the bore could hang up the piston.
When I can buy new drums for less than $25 and turning an old one out further costs $10-15..I'll ditch the old drum.
