Cadillac (1965-71)
With wheels removed, tighten adjusting star wheel until brake drum can just be rotated forward, using a steel bar placed between mounting studs. Adjusting access hole is in backing plate on rear wheels and in drum on front wheels. Disengage adjuster pawl from star wheel with a hooked tool and back off star wheel 40 notches, using suitable adjuster tool. Install wheels and lower vehicle. Drive forward and backward, applying brakes moderately for each stop. Repeat until pedal travel does not exceed 1 7/8" on 1965 vehicles, or 1 1/2" or 1966-69 vehicles.