Cadillac & Oldsmobile (Exc. Starfire)
Remove wheels and drums. Make sure parking brake cable and linkage is free. Measure drum inside diameter using a suitable tool (J-21177). Adjust shoes to fit opposite side of measuring tool (see Fig. 2). Install drums and wheels. Drive vehicle alternately backward and forward, applying brakes moderately until pedal travel is adequate (2 1/16" maximum).