| • | Inspect the disc brake pads at least twice a year, or whenever
the tire and wheel assemblies are not on the vehicle. |
| • | The disc brake pads have wear indicators.
When the pad lining wear reaches the minimum thickness, the wear indicator
contacts the brake rotor (2). The wear indicator will produce a high-pitched
warning noise during wheel rotation. |
| • | Inspect the thickness of the pad linings in order to verify that
they have not worn unevenly. The pad lining wear should be approximately
even per axle set. Compare the pad lining thickness to the following specification: |
Specification
The minimum brake pad lining thickness is 2 mm (0.080 in)
| • | Replace the disc brake pads when the pad lining thickness is less
than the minimum specification. |
| • | Inspect both edges of the pad linings. The highest rate of wear
normally occurs at the trailing edge of the disc brake pads. |
| • | Remove the calipers and inspect the lining surfaces of the inner
and outer pads in order to verify that they are level. Place the pad lining
surfaces together and measure the gap between the surfaces. If more than
0.13 mm (0.005 in) gap exists midway between the attaching
lugs, replace the disc brake pads. |
| • | Verify that the brake pad insulators are in place and not damaged
or excessively corroded. Replace any missing or damaged insulators in order
to preserve proper disc brake performance. |
| • | Replace the disc brake pads if any linings have de-laminated from
the mounting plates. |
| • | Inspect the disc brake pad lining surfaces for cracks or fractures
which can cause noise or otherwise impair disc brake performance. |
