Nissan Armada 2025-2026 Service and Repair Manual: Disc Rotor

Inspection and Adjustment

WARNING:

• Jacking up or lift up the vehicle may the vehicle height to go down which cause a personal injury and/or damage to the air suspension component parts. Refer to Precaution for when Jacking and Lifting Up the vehicle with Electronic Air Suspension System.

INSPECTION

Appearance

Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace it if necessary.

Refer to Removal and Installation

Runout

Fix the disc rotor to the wheel hub and bearing assembly with wheel nuts (2 points at least).

Check the wheel bearing axial end play.

Refer to Inspection

Inspect the runout with a dial indicator to measure at 10 mm (0.39 in) inside the disc edge.

Find the installation position that has a minimum runout by shifting the disc rotor-to-wheel hub and bearing assembly installation position by one hole at a time if the runout exceeds the limit value.

Refinish the disc rotor if the runout is outside the limit even after performing the above operation.

CAUTION:

• Check in advance that the thickness of the disc rotor is wear thickness + 0.3 mm (0.012 in) or more.

• If the thickness is less than wear thickness + 0.3 mm (0.012 in), replace the disc rotor.

  Refer to Removal and Installation

Thickness

Check the thickness of the disc rotor using a micrometer. Replace the disc rotor if the thickness is below the wear limit.

Refer to Removal and Installation

ADJUSTMENT

Burnish contact surfaces between disc rotors and brake pads according to the following procedure after refinishing or replacing disc rotor, or if a soft pedal occurs at very low mileage.

CAUTION:

• Be careful of vehicle speed because the brake does not operate firmly/securely until pad and disc rotor are securely fitted.

• Only perform this procedure under safe road and traffic conditions. Use extreme caution.

Drive vehicle on straight, flat road.

Depress brake pedal with the power to stop vehicle within 3 to 5 seconds until the vehicle stops.

Drive without depressing brake for a few minutes to cool the brake.

Repeat steps 1 to 3 until pad and disc rotor are securely fitted.