Focus L4-2.0L DOHC VIN 5 (2003)
Brake Rotor/Disc: Testing and Inspection
Brake Disc Runout Check
Special Tool(s)
Check
1. Loosen the wheel nuts.
2. Raise and support the vehicle.
3. Remove the wheel.
4. Remove the brake pads.
5. Reverse and install the wheel nuts to hold the brake disc in place.
6. Install a dial indicator gauge and holding fixture to the suspension strut.
7. NOTE: If the runout is outside the specification, check the wheel hub face runout.
Using a suitable dial indicator gauge measure the inner and outer faces of the disc.
1
Position the gauge so that it contacts the disc 10 mm (0.4 inch) from the outer edge.
2
Slowly rotate the disc. The total dial reading should not exceed the given specification.
8. Check the brake disc thickness variation.
^
Using a suitable micrometer measure the disc thickness at eight positions 45 degrees apart and 15 mm in from the outer edge of the brake disc.
^
If any of the readings vary by 0.015 mm or more, or the brake disc thickness is less than the specified minimum, a new brake disc should be
installed.
9. Remove the brake disc.
