Sonata GL V6-2.5L (1999)
Brake Rotor/Disc: Testing and Inspection
FRONT BRAKE DISC RUN-OUT CHECK
1. Remove the caliper support bolts, then raise the caliper assembly upward and secure by using wire.
2. Inspect the disc surface for groove, cracks, and rust. Clean the disc thoroughly and remove all rust.
3. Place a dial gauge approximately 5 mm (0.2 inch.) from the outer circumference of the brake disc, and measure the runout of the disc.
Limit: 0.08 mm (0.0031 inch.)
NOTE: Tighten the nuts in order to secure the disc to the hub.
FRONT BRAKE DISC RUN-OUT CORRECTION
1. If the run-out of the brake disc is equivalent to or exceeds the limit specification, change the phase of the disc and hub, and then measure the
run-out again.
1. Before removing the brake disc, chalk both sides of the wheel stud on the side at which run-out is greatest.
2. Remove the brake disc, and then place a dial gauge as shown in the illustration; then move the hub in the axial direction and measure the play.
Limit: 0.05 mm (0.0020 inch.).
If the play is equivalent to or exceeds the limit, disassemble the hub knuckle and check each part.
3. If the play does not exceed the limit specification, install the brake disc at a position 180° away from the chalk mark, and then check the
run-out of the brake disc once again.
