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Home >> Pontiac >> 1981 >> T1000 2D Hatchback, Automatic Trans >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Brake Systems - DELCO-Moraine Single Piston Disc - Front >> Servicing >> Rotor Servicing >> Lateral Runout

Lateral Runout

Adjust wheel bearings until all end play is eliminated. Attach a dial indicator to front suspension so pointer contacts face of rotor about 1 inch from edge. Set gauge to zero, then turn rotor through one complete revolution. Check gauge reading with specifications for maximum runout.

Fig 1: Checking Rotor Lateral Runout
G09330730Courtesy of GENERAL MOTORS COMPANY