Altima L4-2.5L (QR25DE) Hybrid (2007)
Brake Rotor/Disc: Testing and Inspection
Front
DISC ROTOR
DISC ROTOR: Inspection
VISUAL
Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace if there are.
RUNOUT
1. Fix disc rotor to wheel hub using wheel nuts (2 or more positions).
2. Inspect runout using a dial gauge. [Measured at 10 mm (0.39 in) inside the disc edge.]
Runout limit: 0.035 mm (0.0014 in) (with it attached to the vehicle)
NOTE: Before measuring, make sure that wheel bearing axial end play is within the specification. Refer to FAX-5, "Inspection". See:
Maintenance/Wheels and Tires/Wheel Hub/Testing and Inspection/Front Wheel Hub Inspection
3. When runout exceeds limit value, displace mounting positions of disc rotor by one hole. And then find a position of the minimum value for runout.
4. Replace or lathe disc rotor if runout is outside the specified value after performing the above operation.
THICKNESS
Check thickness of the disc rotor using a micrometer. Replace disc rotor if thickness is under the wear limit.
Standard thickness: 26.0 mm (1.024 in)
Wear limit: 24.0 mm (0.945 in)
Thickness variation (Measured at 8 positions): 0.015 mm (0.0006 in)