Front Disc Brake

FRONT DISC BRAKE

DISC ROTOR : Inspection


VISUAL

Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace if necessary.

RUNOUT






1.Attach the disc rotor to wheel hub using wheel nuts at two or more positions.
2.Inspect runout using a dial gauge. Set the dial gauge to measure at 10 mm (0.39 in) inside the disc edge.
Maximum runout (with it attached to the vehicle): Front Disc Brake.

NOTE:
Before measuring, make sure that wheel bearing axial end play is within the specification. Testing and Inspection.
3.When runout exceeds limit value, displace mounting positions of disc rotor by one hole and then find a position of the minimum value for runout.
4.If runout is outside the specified value after performing the above operation, refinish the disc rotor using
Tool.
Tool number: 38-PFM90.5

THICKNESS






Check thickness of the disc rotor using a micrometer. Replace disc rotor if thickness is under the wear limit.
Standard thickness: Front Disc Brake.
Wear limit thickness: Front Disc Brake.
Thickness variation (Measured at 8 positions): Front Disc Brake.