POTENTIAL CAUSE(S)

CHECK THESE FIRST:

1. BRAKE SHOES BINDING AT BACKING PLATE LEDGE
Have drum brake professionally repaired.

2. WORN BACKING PLATE LEDGE
Have drum brake professionally repaired.

CHECK THIS NEXT:

3. FAULTY SELF-ADJUSTER
Have self-adjuster professionally serviced.

CHECK THIS LAST:

4. THREADED BRAKE DRUM; CONFIRMED IF NOISE IS PRESENT MOSTLY AT LOW SPEED AND LIGHT PEDAL PRESSURE
Have brake drum professionally machined or replaced.