Grand Caravan FWD V6-229 3.8L VIN L MFI (1997)
Brake Rotor/Disc: Testing and Inspection
Thickness Variation Check
Minimum Rotor Thickness Markings
Checking Rotor For Thickness Variation
MEASURING
Thickness variation measurements of the rotor should be made in conjunction with the lateral runout measurements. Measure the thickness of the
rotor at 12 circumferentially equal points with a micrometer at a radius approximately 25.4 mm (1 inch) from outer edge of rotor. If thickness
measurements vary by more than 0.013 mm (0.0005 inch), rotor should be removed and resurfaced, or a new rotor installed. If cracks or burned
spots are evident, rotor must be replaced. Light scoring and/or wear is acceptable. If heavy scoring or warping is evident, the rotor must be
refinished or replaced. If cracks are evident in the rotor, replace the rotor.
