Warning: Refer to Brake Dust Warning in the Preface section.
| • | Inspect the disc brake pads at 9 656 km (6,000 mi), or whenever the tire and wheel assemblies are removed from the vehicle. |
| • | When replacement is necessary, always replace disc brake pads in axle sets. |
| • | Inspect both edges of the disc brake pad friction surfaces (3). The highest rate of wear normally occurs at the trailing edge of the disc brake pads. |
| • | Inspect the thickness of the disc brake pads (3) in order to ensure that they have not worn prematurely. The disc brake pad wear should be approximately even per axle set. |
| • | Replace the disc brake pads when the friction surface (3) is worn to within 1.60 mm (0.063 in) of the mounting plates. |
| • | Remove the brake calipers and inspect the friction surfaces of the inner and outer disc brake pads to ensure that they are level. Place the disc brake pad friction surfaces together and measure the gap between the surfaces. If more than 0.13 mm
(0.005 in) gap exists midway between the length of the disc brake pads, replace the disc brake pads. |
| • | Ensure that any disc brake pad shims that may be required are in place and not damaged or excessively corroded. Replace any missing or damaged shims in order to preserve proper disc brake performance. |
| • | Replace the disc brake pads if any have separated from the mounting plates. |
| • | Inspect the disc brake pads friction surfaces for cracks, fractures, or damage which may cause noise or otherwise impair disc brake performance. |
