Brake Pad: Testing and Inspection

DISK BRAKE PADS AND ROTORS

INSPECT FOR WEAR

BRAKE PADS CHECK









1.
CAUTION:
If there is a significant difference in thickness between the brake pads at right and left, check the sliding area and the run-out of the brake disc (Refer to Brake Disc Check).

Visually check the thickness of brake pad from the inspection hole of the caliper body.
Standard value: 10.0 mm (0.39 inch)
Limit: 2.0 mm (0.08 inch)
2. If the brake pad thickness is less than the limit value, replace the brake pad (Refer to Brake Pad Replacement [Ralliart]).

BRAKE DISC THICKNESS CHECK

1. Remove contaminants or corrosion from the brake disc surface.





2. Use a micrometer to measure the brake disc thickness at minimum eight points which are 10 mm (0.39 inch) inward from its circumference.
Standard value:

24.0 mm (0.94 inch) [Front]
10.0 mm (0.39 inch) [Rear]

22.4 mm (0.88 inch) [Front]
8.4 mm (0.33 inch) [Rear]
3. If the brake disc thickness is worn beyond the limit value at more than one point, replace the brake disc and check its run-out.

BRAKE DISC RUN-OUT CHECK AND CORRECTION





Place a dial gauge ca. 5 mm (0.2 inch) inward from the circumference of the brake disc to measure its run-out.
Limit:

0.06 mm (0.0024 inch) [Front]
0.08 mm (0.0032 inch) [Rear]