Rear Brake Drag

[DBaack]

My passenger side rear drum brake on an 89 Full Size is has got me scratching my head. Yesterday on a 20 mile drive to work I started to feel the drag at a stop sign about 5 miles out. By the time I got to work it was hot enough to show a bit of smoke. I drove it to lunch and no drag, everything seemed fine. Driving home I stopped a few times and all seemed fine until about 5 miles out and it started dragging again. I took it to the mechanic this morning, took the hub off and everything seemed ok. Put it back together, drove it ten miles, no drag, no unusual heat. So I headed out to work and almost at the same distance I was getting the drag again. The mechanic said he just didn't see anything that looked like the problem. The only thing that I can say is any different is that the brake pedal seems harder than it used to. Any ideas what to try next would be appreciated.

 

[BroncoJoe19]

Perhaps either your return springs are weak, OR your emergency brake cable is sticking.

 

[JLasvegas]

check the wheel cyliner, its possibly sticking