Inspect the drum for scoring, cracks, grooves and out-of-roundness. Replace
the drum or have it ""turned'' at a machine or brake specialist shop, as required.
Light scoring may be removed by dressing the drum with fine emery cloth.
Fig. 1: Place a caliper inside the drum to measure
the diameter
Measure the inside diameter of the drum. A tool called a H-gauge caliper
is used. See the Brake Specifications chart for your vehicle.
