Dakota 4WD V8-318 5.2L (1991)
Fig 6 Checking Rotor Thickness Variation And Runout
ROTOR RUNOUT
Check rotor lateral runout with a dial indicator. Excessive lateral runout will cause brake pedal pulsation and rapid, uneven wear of the brake
shoes.
Maximum allowable rotor runout for all models is 0.102 mm (0.004 inch).
ROTOR THICKNESS VARIATION
Variations in rotor thickness will cause pedal pulsation, noise and shudder.
Measure rotor thickness at 8 to 12 points around the rotor face. Position the micrometer approximately 19 mm (3/4 in) from the rotor outer
circumference for each measurement as shown.
Thickness should not vary by more than 0.013 mm (0.0005 in) from point to point on the rotor. Refinish or replace the rotor if necessary.
