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Home >> GMC >> 1990 >> Forward Control 7.4 N, Automatic, 400/M40 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> DISC & DRUM (C, G, K, P, R & V Series) >> Rotor Servicing >> Lateral RUNOUT

Lateral RUNOUT

Adjust wheel bearings until all end play is eliminated. Attach dial indicator with contact tip of indicator about 1" from rotor edge. Set indicator to zero and turn rotor through one complete revolution, noting indicator reading.